case study based question on nutrition in animals

Case Study Questions Class 7 Science Nutrition in Animals

Case study questions class 7 science chapter 8 nutrition in animals, cbse case study questions class 7 science nutrition in animals, case study 1, case study 2.

Que. 2) (d) All of the above

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Case study 4.

Que. 3) (c) America

Case study 5

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Case Study Questions for Class 7 Science Chapter 2 Nutrition in Animals

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[Download] Case Study Questions for Class 7 Science Chapter 2 Nutrition in Animals

Here we are providing case study or passage-based questions for class 7 science chapter 2 Nutrition in Animals.

Case Study/Passage Based Questions

Amoeba is a microscopic single-celled organism found in pond water. It has a cell membrane, a rounded, dense nucleus and many small bubble-like vacuoles in its cytoplasm. Amoeba constantly changes it shape and position. It pushes out one or more finger-like projections, called pseudopodia or false feel, for movement or capture of food. 1. A unicellular organism that has contractile vacuoles and in which ingestion of food takes place with the help of cilia is (a) Amoeba (b) Yeast (c) Paramecium (d) None of these 2. Amoeba (a) is a single-celled organism (b) has a rounded, dense nucleus (c) has many small bubble-like vacuoles in its cytoplasm (d) all the above are correct 3. For capture of food, Amoeba (a) pushes out one finger-like projection (b) pushes out one or more finger-like projection (c) both the above are correct (d) one of the above is correct

The partly digested food reaches the lower part of small intestines and digestion of all components of food is completed here by intestinal juice. 1. Proteins change into? (a) amino acid (b) HCl acid (c) pepsin (d) starch 2. Which gland is largest gland in the body? (a) stomach (b) pancreas (c) liver (d) heart 3. Which enzyme is secreted by small intestine? (a) amylase (b) pepsin (c) trypsin (d) HCl

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Case study or passage-based questions in class 7 Science typically require students to read a given scenario or passage and answer questions based on the information provided. These questions assess students’ comprehension, analytical thinking, and application of scientific concepts. 

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• Read the textbook and study materials:  Familiarize yourself with the concepts and topics covered in your class 6 Science curriculum. Read the textbook thoroughly and take notes on important information.
• Practice analyzing case studies:  Look for case studies or passages related to class 6 Science topics. Analyze the given information, identify key details, and understand the context of the situation.
• Develop comprehension skills:  Focus on improving your reading comprehension skills. Practice reading passages or articles and try to summarize the main points or extract relevant information. Pay attention to details, vocabulary, and the overall structure of the passage.
• Understand scientific concepts:  Ensure that you have a solid understanding of the scientific concepts discussed in class. Review the fundamental principles and theories related to each topic.
• Make connections:  Try to connect the information provided in the case study to the concepts you have learned in class. Identify any cause-effect relationships, patterns, or relevant scientific principles that apply to the situation.
• Practice critical thinking:  Develop your critical thinking skills by analyzing and evaluating the information given in the case study. Think logically, consider multiple perspectives, and draw conclusions based on the evidence provided.
• Solve practice questions:  Look for practice questions or sample case study questions specifically designed for class 6 Science. Solve these questions to apply your knowledge, practice your analytical skills, and familiarize yourself with the format of case study questions.
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• Nutrition in Animals Class 7 Case Study Questions Science Chapter 2

Last Updated on August 26, 2024 by XAM CONTENT

Hello students, we are providing case study questions for class 7 science. Case study questions are the new question format that is introduced in CBSE board. The resources for case study questions are very less. So, to help students we have created chapterwise case study questions for class 7 science. In this article, you will find case study questions for cbse class 7 science chapter 2 Nutrition in Animals.

Table of Contents

Case Study Questions on Nutrition in Animals

Question 1:

Read the given passage below and answer the question:

The small intestine is highly coiled structure. It is about 7.5 metres long. It receives secretions from the liver and the pancreas. The liver is a reddish brown gland located in the upper part of the abdomen on the right side. The pancreas is a large cream coloured gland located just below the stomach that secretes the pancreatic juice.

Q.1. The liver releases: (a) digestive juice (b) acid (c) bile juice (d) saliva

Difficulty Level: Easy

Ans. Option (c) is correct Explanation: The liver secretes bile juice that is stored in a sac called the gall bladder

Q.2. The glands associated with the alimentary canal are: (a) salivary glands and liver (b) pancreas and liver (c) gall bladder and liver (d) salivary glands, liver and pancreas

Difficulty Level: Medium

Ans. Option (d) is correct. Explanation: The various glands associated with the canal such as salivary glands, the liver and the pancreas secrete digestive juices. The salivary glands present in the buccal cavity secret saliva. Saliva helps in the digestion of starch. Bile is secreted by the liver however, stored in gall bladder and pancreatic juice is secreted from the pancreas.

Q.3. In the lower part of the small intestine which juice completes the digestion of all components of the food. (a) saliva (b) bile (c) pancreatic (d) intestinal juice

Ans. Option (d) is correct. Explanation: The partly digested food on reaching the lower part of the small intestine where the intestinal juice secreted by the inner walls of the intestine, completes the digestion of all components of the food.

Q.4. What important function of pancreatic juice and bile.

Ans. The pancreatic juice acts on carbohydrates, fats and proteins and changes them into simpler forms. The bile plays an important role in the digestion of fats.

Q.5. What happens when the partly digested food reaches the lower part of the small intestine.

Difficulty Level: Difficult

Ans. When the partly digested food reaches the lower part of the small intestine, then the intestinal juices completes the digestion of all components of the food.

• Respiration in Organisms Class 7 Case Study Questions Science Chapter 6
• Physical and Chemical Changes Class 7 Case Study Questions Science Chapter 5
• Acids Bases and Salts Class 7 Case Study Questions Science Chapter 4

Heat Class 7 Case Study Questions Science Chapter 3

Nutrition in plants class 7 case study questions science chapter 1, topics from which case study questions may be asked.

• Define digestion.
• Discuss different modes of taking food in animals.
• Describe human digestive system.
• Explain process of digestion in human.
• Explain process of digestion in grass eating animals.
• Explain process of feeding and digestion in Amoeba.

For further practice on case study questions related to Class 7 Science Chapter 2 Nutrition in Animals, we recommend exploring the link given below.

Frequently Asked Questions (FAQs) on Nutrition in Animals Case Study Questions

Q1: what are case study questions for cbse examinations.

A1: Case study questions in CBSE examinations typically involve scenarios or real-life examples, requiring students to apply their understanding of concepts to solve problems or analyze situations.

Q2: Why are case study questions important for understanding class 7 science chapters?

A2: Case study questions provide a practical context for students to apply theoretical knowledge to real-world situations, fostering deeper understanding and critical thinking skills.

Q3: How should students approach answering case study questions for CBSE?

A3: Students should carefully read the case study, identify the key issues or problems presented, analyze the information provided, apply relevant concepts and principles, and formulate well-supported solutions or responses.

Q4: Are there any resources available online for students to practice case study questions on class 7 science chapters for CBSE exams?

A4: Yes, several educational websites offer case study questions for CBSE students preparing for science examinations. We also offer a collection of case study questions for all classes and subject on our website. Visit our  website  to access these questions and enhance your learning experience.

Q5: How can students effectively prepare for case study questions on nutrition in animals for CBSE exams?

A5: Effective preparation strategies include regular revision of concepts, solving practice questions, analyzing case studies from previous exams, seeking clarification on doubts, and consulting with teachers or peers for guidance and support.

Q6: How can teachers incorporate case study questions on nutrition in animals class 7 science into classroom teaching?

A6: Teachers can integrate case studies into lesson plans, group discussions, or interactive activities to engage students in active learning, promote problem-solving skills, and facilitate a deeper understanding of nutrition in plants.

Q7: What is the process of nutrition in animals?

A7: Nutrition in animals involves the intake, digestion, absorption, and utilization of food to obtain energy and essential nutrients required for growth, maintenance, and repair of body tissues.

Q8: What role do enzymes play in the process of digestion in animals?

A8: Enzymes are biological catalysts that facilitate chemical reactions in the digestive system by breaking down complex food molecules into simpler substances that can be absorbed by the body. Different enzymes act on specific types of food molecules.

Q9: How does the process of digestion occur in the stomach of animals?

A9: In the stomach, food is mixed with gastric juices containing hydrochloric acid and enzymes like pepsin. The acidic environment helps in the breakdown of proteins, while muscular contractions churn the food, converting it into a semi-liquid form called chyme.

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Important Questions for CBSE Class 7 Science Chapter 2 - Nutrition in Animals

• Class 7 Important Question
• Chapter 2: Nutrition In Animals

CBSE Class 7 Science Chapter-2 Important Questions - Free PDF Download

Important Questions of Class 7 Chapter 2 Nutrition in Animals deals with some important chapter questions that students can expect in exams. Many important terms and facts are covered in the chapter. Subject matter experts develop the important questions on the chapter and its reference notes from Vedantu, and they have provided an in-depth analysis of the chapter in a very unique way. These extra important questions have proved very effective for the students.

The free PDF of the important questions for CBSE Class 7 Chapter 2 is available on the official website of Vedantu, and you can download them on any device.

Following are some important points of Chapter 2 of Class 7 Science that quickly gives you an encapsulation of the chapter.

Important Topics Covered Under CBSE Class 7 Science Chapter 2 - Nutrition in Animals

The important topics which the students will learn from CBSE Class 7 Science Chapter 2 - Nutrition in Animals are as follows:

Process of Nutrition in Animals

Process of Digestion in Grass eating animals

Process of Digestion in Humans

Different Ways of Taking Food

Feeding in Amoeba

Digestion System of Amoeba

Study Important Questions for Class 7 Science Chapter 2 – Nutrition in Animals

Very Short Answer Questions  (1 Mark)

1. Match the Following:-

Ans: The following is the matched table:

2. Fill in the blanks:

a) _______________ is the elimination of unused parts of the food.

Ans: Egestion is the elimination of unused parts of the food.

b) The digestive system in humans consists of ___________________ and_______________.

Ans: The digestive system in humans consists of alimentary canal and digestive glands .

c) The first set of teeth that grow during infancy and fall off between 6-8 years of age is____________.

Ans: The first set of teeth that grow during infancy and fall off between 6-8 years of age is milk teeth .

d) The working of the stomach was discovered by _____________.

Ans: The working of the stomach was discovered by William Beaumont .

Short Answer Questions (2 Mark)

1. Define Nutrition in animals.

Ans: Nutrition in animals is very important. Some of them are plant-eating while others are carnivores. It includes the process of food ingestion, digestion, absorption and assimilation by the cells of their body. It also includes the removal of unused portions of food.

2. Differentiate between absorption and assimilation.

Ans: The difference between absorption and assimilation is as follows:

3. What is the function of the large intestine in digestion?

Ans: The large intestine reabsorbs all the excess water from unabsorbed and undigested food. Thus, it helps in making the unabsorbed portion of the food as faeces and its elimination by excretion. Thus, returning most of the water to the blood can prevent excess water loss as well as eliminate unabsorbed food from the body.

4. List the different types of teeth present in humans and their functions.

Ans: The different types of teeth present in humans and their functions are:

Incisors: Incisors or the front teeth are the eight visible teeth that are used to bite the food.

Canines: Next to incisors are the canines that are used to tear flesh or other food items. These are very sharp and come in around nine to twelve years of age.

Premolars: Next to canines are the premolars which are typically used for grinding and chewing food.

Molars: Molars are replaced by the eight premolars. They serve the primary function of chewing and grinding food into small particles.

5. What is diarrhoea?

Ans: When excess water from digested food is not reabsorbed, it is passed out through the stool which is loose and watery. Passage of this watery stool frequently is called diarrhoea which is caused by a microbial infection of the alimentary canal. This can lead to severe dehydration that can be controlled by using Oral Rehydration Solutions (ORS).

Long Answer Questions (5 Marks)

1. Explain nutrition in starfish.

Ans: Starfish is an aquatic invertebrate. It has a unique way of obtaining nutrition from other animals.

Ingestion: The mouth of the starfish is on the underside of their body.They wrap themselves around the prey and open the shell of the prey. Then through their mouth they push their stomach out and ingest the soft animal.

Digestion: They digest the animal in the stomach and draw its stomach back into its body.

Absorption and assimilation: This allows them to feed on organisms larger than the ones which can fit into their small mouth.

2. Explain the process of nutrition in amoeba.

Ans: The process of nutrition in amoeba is done through holozoic nutrition and the process is called phagocytosis .

Ingestion: Amoeba moves closer to its food with the help of pseudopodia and encircles it forming a food vacuole to engulf the food.

Digestion: The food is then digested using digestive enzymes present in the lysosomes.

Absorption and assimilation: The digested food is absorbed by the cytoplasm and the energy thus produced from the food is used to perform different life processes. 

Egestion: To excrete the undigested food, an amoeba ruptures its cell wall and releases it out of the cell.

3. Explain the process of digestion and absorption in the small intestine.

Ans: The process of digestion as well as absorption in small intestine is as follows:

Digestion: Digestion in the small intestine is accomplished by the action 

of digestive juices from the liver, pancreas and small intestine. The bile juice secreted by the liver helps in the digestion of fats, breaking down the big fat droplets into smaller droplets. It does not contain any enzymes. Pancreatic juice secreted by the pancreas contains enzymes for the digestion of carbohydrates, proteins and lipids. Pancreatic amylase helps in the digestion of carbohydrates while trypsin helps in the digestion of proteins. The enzymes of the intestinal juice eventually break down carbohydrates, proteins and lipids into their simplest components such as glucose, amino acids, fatty acids and glycerol etc.

Absorption: Absorption takes place through the walls of the intestine 

that are lined with finger-like projections known as villi. These villi improve the surface area available for nutritional absorption. The villi contain blood vessels and hence the digested food is absorbed directly into the bloodstream.

4. Explain the importance of rumen in ruminants.

Ans: Rumen is a part of the stomach in grass-eating animals. It stores the food that the ruminant reproduces, chews again and swallows a second time. Specific bacteria found in the rumen aid in the digestion of cellulose. Ruminants can chew their ruminants for hours every day. The rumen contains many small organisms that aid in the digestion of food such as grass whose cell walls cannot be easily digested by other animals. Cud, or partially digested food, is then reintroduced into the mouth for easier chewing. This process of cud-chewing even when the animal is not eating is called rumination. The rumen ferments this food through the formation of gas, which must be expelled by belching to prevent bloating.  

Important Points to Remember Revise the concepts covered in CBSE Class 7 Science Chapter 2 - Nutrition in Animals by solving these important questions. You can also download NCERT Solutions for Class 7 Science for all the other chapters to prepare for your exams. All these solutions are available in free PDF format on our website or mobile app.

Nutrition in animals.

Nutrient requirement, mode of intake food and its utilization by the body is the process of animal nutrition.

Ingestion, digestion, absorption, assimilation and egestion are the stages of nutrition in animals.

Ingestion is taking in food. Various animals use different organs for ingestion.

The breakdown of complex components of food into simpler substances is called digestion.

Absorption is the process by which food in soluble form passes into the body fluid like blood and is transported to different parts of the body.

Assimilation involves utilizing the absorbed nutrients for energy, growth and development.

Egestion is the process of removal of undigested waste.

Modes of feeding differ in different organisms. For example, bees and hummingbirds suck the nectar of plants, infants of mammals feed on mother’s milk, python swallows animals they prey upon, few aquatic animals filter tiny particles floating nearby and feed upon them.

Amoeba is a microscopic, single-celled organism found in pond water. It constantly changes its shape and position.

Pseudopodia is a finger-like projection that is pushed out by amoeba.

Amoeba ingests food with the help of pseudopodia (false feet) and ingests it in the food vacuole.

Amoeba feeds on bacteria, microscopic algae and small unicellular organisms.

The food digested by amoeba is used for growth, maintenance and multiplication.

Amoeba releases unwanted waste through its body surface. 

Nutrition in Humans

The human digestive system is highly complex.

The human digestive system consists of the buccal cavity, oesophagus, stomach, small intestine, large intestine ending in rectum and anus.

The human digestive tract is also called an alimentary canal.

The digestive tract and associated glands like salivary glands, liver and pancreas make up the digestive system.

Digestion begins in the mouth and continues in the stomach and the small intestine.

The cavity of the mouth with all its internal parts like cheeks, teeth, tongue and salivary glands is called the buccal cavity.

The alimentary canal begins from the buccal cavity.

Salivary glands, liver and pancreas play a very important role in the process.

Salivary glands present in the human mouth secrete saliva.

Saliva moistens the food and helps in chewing of food by teeth. It also contains an enzyme which breaks down the starch into sugars.

The oesophagus is the food pipe through which the swallowed food passes.

The liver is the largest gland in our body, secretes bile that is stored in the gallbladder.

The stomach is a thick-walled bag, receives food from oesophagus at one end and opens into the small intestine at the other.

Bile plays a vital role in the digestion of fats.

The pancreas is located just below the stomach and secretes pancreatic juice that acts on carbohydrates, fats and proteins and changes them into simpler forms.

Digested food is absorbed in the small intestine.

The small intestine is a coiled structure that receives secretions from the liver and the pancreas.

Villi are thousands of finger-like projections present in the inner walls of the small intestine.

The digested food materials are absorbed by the surface of the villi.

Semi-solid waste in the form of faeces is expelled through the anus.

A fleshy muscular organ inside the human mouth that is attached to the buccal cavity is the tongue.

The tongue is used for speaking, mixing saliva with food, swallowing the food and detecting different tastes of food with the help of taste buds.

The teeth help in chewing the food and breakdown the big pieces of food into small pieces.

All human beings bear two sets of teeth. The first set of teeth called milk teeth appears after the age of six months. Eventually, these milk teeth are replaced by permanent teeth.

An adult human has 32 permanent teeth - incisors, canines, molars and premolars.

Tooth decay is the damage of the teeth due to harmful bacteria breaking down the sugars and releasing acids.

Tooth decay leads to toothache and even loss of teeth.

Nutrition in Ruminating Animals

Ruminants are grass-eating animals.

Ruminants digest their food in two steps.

The rumen is a separate part of the stomach of ruminants where the swallowed food is stored.

Rumination is a process where the ruminants quickly swallow grass and store it in the rumen. In the rumen, the grass is partially digested and forms a cud. Later, the cud returns back to the mouth in small lumps and the animal chews it.

Cellulose is the carbohydrate present in grass.

Ruminants have a large sac-like structure called caecum that is present between the small intestine and the large intestine.

Certain kinds of bacteria present in caecum help in digestion of the cellulose of the food.

The reference notes relating to Important Questions Of Chapter 2 of Science for Class 7 given above will benefit you in understanding the concepts and basic terms of human and animal digestive systems. The important questions and the reference notes related to the chapter created by Vedantu will give a thorough practice and revision for the exams.

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Benefits of CBSE Important Question for Class 7 Chapter 2

CBSE Important Questions for Class 7 Chapter 2 have the following benefits:

Students will get an insight into the  pattern of questions and the distribution of marks expected  in exams. These patterns of questions will help them solve the questions within time.

Students will learn to manage time properly while solving the questions in exams.

The CBSE Important Questions include some questions that have come in previous year’s exams.

Solving the CBSE Important Questions for Class 7 Chapter 2 will help improve your understanding of the chapter.

Solving CBSE Important Questions will give a thorough revision of the entire chapter.

The collection of important questions for CBSE Class 7 Science Chapter 2 - Nutrition in Animals serves as a valuable resource for students' comprehensive preparation. These questions encompass various aspects of animal nutrition, covering topics such as different modes of feeding, digestive processes, and the significance of essential nutrients. By engaging with these questions, students can enhance their understanding, critical thinking skills, and problem-solving abilities. Moreover, this comprehensive set of questions aids students in building a strong foundation in biological sciences and fosters an appreciation for the intricacies of animal nutrition. Utilising these important questions will undoubtedly contribute to student's academic success and confidence in their scientific knowledge.

FAQs on Important Questions for CBSE Class 7 Science Chapter 2 - Nutrition in Animals

1. How many important questions are there for Chapter 2 of Class 7 Science?

Ans: Vedantu has undertaken the arduous task of listing all the important questions of Class 7 Science Chapter "Nutrition in Animals" in one place.  This has been done to make preparation for exams easier for the students. Vedantu has listed two questions of one mark each, five questions of two marks each, and four questions of five marks each for this chapter. The questions have been provided with suitable answers for revision purposes.

2. Why do we eat food?

Ans: We eat food for optimal functioning of our bodily functions. Food contains vital nutrients like fats, proteins, carbohydrates, vitamins, and minerals. These nutrients help in the building, growth, repair, and maintenance of important biological functions in our bodies. Food provides us with energy. Hence, food is essential for our survival. 

Chapter 2 "Nutrition in Animals" talks about the various processes of food intake, assimilation, and digestion in various animals and humans.

3. Why is digestion needed for animals?

Ans: All living organisms require some sort of nutrition for survival. Microbes, animals, and human beings require different types of food for optimal performance and survival. This food that we ingest needs to be properly digested so that our body can assimilate the required nutrients from it. The properly digested food then helps our bodies to grow and function well. Without proper digestion, the ingested food will not get absorbed by our bodies.

4. How do different animals digest their food?

Ans: Various animals have varying modes of nutrition. For example, grazing animals like cows, buffalo, etc ingest their grassy and leafy food and store it in a sac-like organ called the rumen. Amoeba on the other hand takes in food with the help of false feet called pseudopodia and then digest it in their food vacuole. Another animal, the starfish, attaches to the hard surface of its prey. It then opens the prey's shell and pops out its own stomach and directly ingests the food through it.

5. What is nutrition?

Ans: Chapter 2 "Nutrition in Animals" talks about various modes of nutrition in human beings and animals. Nutrition is the process by which organisms obtain their food and absorb its nutrients in their bodies. Organisms utilize the food ingested for performing various bodily functions. Nutrition helps in deriving energy from the food. Proper nutrition is an indispensable process for the survival of life on earth. Without proper nutrition, organisms will not be able to survive.

Chapterwise Important Questions for CBSE Class 7 Science

Cbse study materials.

CBSE Class 7 Science Chapter 2 Nutrition in Animals MCQ with Answers

Explore our comprehensive collection of MCQ on Nutrition in Animals Class 7 designed to enhance your understanding of Chapter 2 from the CBSE syllabus . This chapter delves into the fascinating ways animals, including humans, obtain and digest their food. Our Nutrition in Animals Class 7 MCQ with Answers is tailored to align with the NCERT guidelines and covers key concepts presented in your NCERT textbook .

As a bonus, we’ve also included links to Nutrition in Plants MCQ Class 7 with Answers to help students who are looking to review the entire scope of nutrition covered in their science curriculum. This resource is a great way to prepare for your CBSE exams and ensure you’re on track with the NCERT syllabus.

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Science Chapter 1 Nutrition in Animals Class 7 MCQ with Answers

Here are the topic wise of various nutrition in animals MCQ with answers:

1. What is the process of breaking down food into simpler substances called?

a) Ingestion

b) Digestion

c) Absorption

d) Assimilation

Answer: b) Digestion

2. Which mode of feeding involves the animal popping out its stomach to eat?

c) Capturing and swallowing

d) Siphoning

Answer: c) Capturing and swallowing

3. What is the main purpose of food for animals?

a) Growth and entertainment

b) Growth, repair, and functioning of the body

c) Growth and sleep

d) Repair and reproduction

Answer: b) Growth, repair, and functioning of the body

4. Where does the digestion of proteins begin in humans?

c) Small intestine

d) Large intestine

Answer: b) Stomach

5. What substance does the liver secrete?

a) Pancreatic juice

d) Gastric juice

Answer: c) Bile

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6. What role does hydrochloric acid play in the stomach?

a) It breaks down fats

b) It kills bacteria

c) It digests proteins

d) It absorbs vitamins

Answer: b) It kills bacteria

7. What are the finger-like projections in the small intestine called?

c) Pseudopodia

Answer: b) Villi

8. What is the function of villi in the small intestine?

a) To secrete digestive juices

b) To increase surface area for absorption

c) To produce bile

d) To chew food

Answer: b) To increase surface area for absorption

9. What does the pancreas secrete?

b) Pancreatic juice

c) Hydrochloric acid

Answer: b) Pancreatic juice

10. How long is the small intestine in humans approximately?

a) 1.5 meters

b) 7.5 meters

c) 5 meters

d) 10 meters

Answer: b) 7.5 meters

11. What type of animals are known as ruminants?

a) Those that chew cud

b) Those that eat meat only

c) Those that eat plants only

d) Those that swallow food whole

Answer: a) Those that chew cud

12. Which animals have a part of the stomach called the rumen?

a) Carnivores

b) Herbivores

c) Omnivores

d) Insectivores

Answer: b) Herbivores

13. What is the purpose of rumination in certain animals?

a) To digest meat more efficiently

b) To break down cellulose

c) To increase food intake

d) To cool down the body

Answer: b) To break down cellulose

14. How does an amoeba ingest food?

a) Through a mouth

b) Using pseudopodia

c) Through gills

d) By absorption through the skin

Answer: b) Using pseudopodia

15. What is the role of digestive juices in the stomach?

a) To make food tastier

b) To break down food into simpler substances

c) To cool down the food

d) To store food for longer periods

Answer: b) To break down food into simpler substances

16. Where is bile stored?

b) Gall bladder

d) Pancreas

Answer: b) Gall bladder

17. What is the primary function of the large intestine?

a) To digest proteins

b) To absorb water and salts

c) To produce digestive enzymes

d) To store undigested food

Answer: b) To absorb water and salts

18. What triggers the production of saliva in the mouth?

a) Seeing food

b) Swallowing food

c) Digesting food

d) Absorbing nutrients

Answer: a) Seeing food

19. What is tooth decay primarily caused by?

a) Acids produced by bacteria

b) Swallowing too quickly

c) Eating too much protein

d) Lack of saliva

Answer: a) Acids produced by bacteria

20. Why should you rinse your mouth after eating?

a) To cool down the mouth

b) To remove food particles and reduce bacteria

c) To taste the food better

d) To prepare for the next meal

Answer: b) To remove food particles and reduce bacteria

What is a common symptom of food poisoning?

a) Coughing

b) Sneezing

c) Diarrhoea

Answer: c) Diarrhoea

22. What should be given to a person suffering from diarrhoea?

a) Cold drinks

b) Oral Rehydration Solution (ORS)

Answer: b) Oral Rehydration Solution (ORS)

23. How do ruminants digest cellulose?

a) Using their own enzymes

b) With the help of bacteria in the rumen

c) By chewing repeatedly

d) Through a long digestive tract

Answer: b) With the help of bacteria in the rumen

24. Why do infants feed on mother’s milk?

a) It is easier to digest

b) It provides necessary nutrients

c) It is a tradition

d) It is more available than other foods

Answer: b) It provides necessary nutrients

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25. What happens in the buccal cavity?

a) Absorption of nutrients

b) Digestion of fats

c) Ingestion and initial digestion of food

d) Storage of food

Answer: c) Ingestion and initial digestion of food

26. What is the role of the tongue in digestion?

a) To push food into the stomach

b) To detect taste and help in mixing food with saliva

c) To digest carbohydrates

d) To store saliva

Answer: b) To detect taste and help in mixing food with saliva

27. What causes the sensation of choking while eating?

a) Food entering the windpipe

b) Food being too hot

c) Allergic reactions to food

d) Overeating

Answer: a) Food entering the windpipe

28. What is the approximate length of the human alimentary canal?

a) 5 meters

b) 10 meters

c) 7 meters

d) 30 meters

Answer: c) 7 meters

29. What is the primary function of the gall bladder?

a) To produce bile

b) To store bile

c) To digest fats

d) To absorb nutrients

Answer: b) To store bile

30. Which part of the digestive system is involved in the absorption of nutrients?

b) Small intestine

c) Large intestine

d) Esophagus

Answer: b) Small intestine

31. What is the role of the stomach in digestion?

a) To absorb nutrients

b) To store undigested food

c) To mix food with digestive juices

d) To secrete bile

Answer: c) To mix food with digestive juices

32. What part of the digestive system has a role in killing bacteria?

a) Small intestine

b) Large intestine

Answer: c) Stomach

33. What are the main steps of nutrition in humans?

a) Ingestion, digestion, absorption, assimilation, egestion

b) Ingestion, respiration, absorption, assimilation, egestion

c) Ingestion, digestion, respiration, assimilation, egestion

d) Ingestion, digestion, absorption, respiration, egestion

Answer: a) Ingestion, digestion, absorption, assimilation, egestion

34. Which gland secretes digestive juices into the small intestine?

a) Salivary glands

c) Gall bladder

Answer: d) Pancreas

35. Where are proteins first digested in the human body?

36. What is the role of the large intestine in the digestive system?

a) To digest carbohydrates

c) To secrete digestive enzymes

d) To produce bile

37. Which teeth are used for tearing food?

c) Incisors

d) Premolars

Answer: b) Canines

38. What is the role of saliva in the digestion of food?

a) It helps in the digestion of proteins

b) It helps in the digestion of fats

c) It helps in the digestion of carbohydrates

d) It does not play a role in digestion

Answer: c) It helps in the digestion of carbohydrates

39. What initiates the digestion of starch?

a) Gastric juices

c) Pancreatic juice

Answer: d) Saliva

40. What is the function of mucus in the stomach?

a) To digest food

b) To protect the stomach lining

c) To absorb nutrients

d) To produce hydrochloric acid

Answer: b) To protect the stomach lining

41. What is the primary function of the teeth?

a) To produce saliva

b) To aid in digestion by breaking down food

d) To protect the tongue

42. Answer: b) To aid in digestion by breaking down food

What does rumination involve?

a) Regurgitating swallowed food to chew it again

b) Swallowing food quickly

c) Digesting cellulose

d) Absorbing nutrients in the stomach

Answer: a) Regurgitating swallowed food to chew it again

43. Why is it advised to brush your teeth after eating sweets?

a) To freshen breath

b) To prevent tooth decay

c) To make teeth whiter

d) To prevent gum diseases

Answer: b) To prevent tooth decay

44. What causes diarrhoea?

a) Virus infection

b) Bacterial infection

c) Overeating

d) Both a and b

Answer: d) Both a and b

45. How does food move through the esophagus?

a) By gravity

b) By peristaltic movements

c) By active transport

d) By passive diffusion

Answer: b) By peristaltic movements

46. What is the first set of teeth called?

a) Permanent teeth

b) Baby teeth

c) Milk teeth

d) Temporary teeth

Answer: c) Milk teeth

47. Which part of the digestive system is the site for complete digestion of carbohydrates, fats, and proteins?

48. What is the role of bile in the digestion of fats?

a) It breaks down fats into fatty acids and glycerol

b) It emulsifies fats

c) It absorbs fats

d) It stores fats

Answer: b) It emulsifies fats

49. What is egestion?

b) Ingestion of food

c) Excretion of undigested food

d) Digestion of food

Answer: c) Excretion of undigested food

50. Which type of carbohydrate can ruminants digest that humans cannot?

c) Cellulose

Answer: c) Cellulose

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• NCERT Exemplar
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• Chapter 2 Nutrition In Animals

NCERT Exemplar Solutions Class 7 Science Chapter 2 Nutrition in Animals

NCERT Exemplar Solutions for Class 7 Science Chapter 2 Nutrition in Animals include answers to all the questions provided in the NCERT Exemplar book. Students are advised to get well acquainted with this NCERT Exemplar as it will guide them in gaining complete knowledge of the concepts covered in Class 7 Science Chapter 2, Nutrition in Animals.

NCERT Exemplar for Class 7 Science will provide you with a variety of questions like MCQs, fill in the blanks, match the following and descriptive type questions on nutrition, types of different organisms, classification of nutrients, etc.

This Exemplar Solution provides answers and explanations to 12 MCQs, 6 very short answer questions, 6 very short answer questions and 6 long answer questions.

Download the PDF of NCERT Exemplar for Class 7 Science Chapter 2 – Nutrition in Animals

Importance of NCERT Exemplar for Class 7 Science Chapter 2 Nutrition in Animals

NCERT Class 7 Science Chapter 2 Nutrition in Animals covers questions on animal food and nutrition, the mode of food intake, digestion in different animals and protozoans, and a detailed explanation of the mode of nutrition in human beings. This chapter is quite an interesting one, as you can correlate it to many real-life examples.

Topics Covered in NCERT Exemplar for Class 7 Science Chapter 2 Nutrition in Animals

2.1 – Different Ways of Taking Food

2.2 – Digestion in Humans

2.3 – Digestion in Grass-Eating Animals

2.4 – Feeding and Digestion in Amoeba.

Access Answers of NCERT Exemplar for Class 7 Science Chapter 2 – Nutrition in Animals

Multiple-choice questions.

1. Given below from (i) to (iv) are some food items.

• Boiled and mashed potato
• Glucose solution
• A slice of bread
• Mustard oil

Which of the above will give a blue-black colour when tested with iodine?

(a) (i) and (ii)

(b) (i) and (iii)

(c) (ii) and (iii)

(d) (iii) and (iv)

The answer is (b) (i) and (iii)

Explanation:

Mashed potato and bread are rich in starch. On adding iodine, it reacts with starch to give a blue-black colour.

2. Which of the following pair of teeth differ in structure but are similar in function?

(a) canines and incisors.

(b) molars and premolars.

(c) incisors and molars.

(d) premolars and canines.

The answer is (b) molars and premolars.

Our teeth tear and grind the food before swallowing food. There are four types of teeth.

Incisors: front eight teeth, 4 in the upper jaw and 4 in the lower jaw.

Canines: There are 4 canines, one on each side of each jaw.

Premolars: There are 8 premolars. Two premolars in each of the upper and lower jaws.

Molars: There are 12 molars, three in each half of both upper and lower jaws.

3. Read carefully the terms given below. Which of the following set is the correct combination of organs that do not carry out any digestive functions?

(a) Oesophagus, Large Intestine, Rectum

(b) Buccal cavity, Oesophagus, Rectum

(c) Buccal cavity, Oesophagus, Large Intestine

(d) Small Intestine, Large Intestine, Rectum

The answer is (a) Oesophagus, Large Intestine, Rectum

Oesophagus pushes the food downwards, and it is not involved in any digestive functions.

The large intestine absorbs water and some salts from the undigested food material, and it is not involved in the digestion process.

In the rectum, the remaining waste passes and remains there as semi-solid faeces. It is not involved in any digestive function.

4. The swallowed food moves downwards in the alimentary canal because of

(a) force provided by the muscular tongue.

(b) the flow of water taken with the food.

(c) gravitational pull.

(d) the contraction of muscles in the wall of the food pipe.

The answer is (d) the contraction of muscles in the wall of the food pipe.

Muscles of the Esophagus push food down by the movement of the wall of the food pipe. Actually, this movement takes place throughout the alimentary canal and pushes the food downwards.

5. The acid present in the stomach

(a) kills the harmful bacteria that may enter along with the food.

(b) protects the stomach lining from harmful substances.

(c) digests starch into simpler sugars.

(d) makes the medium alkaline.

The answer is (a) kills the harmful bacteria that may enter along with the food.

The stomach consists of Hydrochloric acid, which kills the bacteria that enter through food. Thus stomach acid is helping in protecting us from harmful bacteria.

6. The finger-like outgrowths of Amoeba help to ingest food. However, the finger-like outgrowths of the human intestine help to

(a) digest the fatty food substances.

(b) make the food soluble.

(c) absorb the digested food.

(d) absorb undigested food.

The answer is (c) absorb the digested food.

Fingerlike projection is present in the small intestine, and they are called Villi. Villi absorb nutrients from digested food by increasing the space of the small intestine.

7. Read the following statements with reference to the villi of the small intestine.

(i) They have very thin walls.

(ii) They have a network of thin and small blood vessels close to the surface.

(iii) They have small pores through which food can easily pass.

(iv) They are finger-like projections. Identify those statements which enable the villi to absorb digested food.

(a) (i), (ii) and (iv)

(b) (ii), (iii) and (iv)

(c) (iii) and (iv)

(d) (i) and (iv)

Answer is (a) (i), (ii) and (iv)

The inner walls of the small intestine have thousands of finger-like outgrowths called villi (singular villus). Villi increase the surface area for absorption of the digested food. Each villus has a network of thin and small blood vessels close to its surface. The surface of the villi absorbs the digested food materials. The absorbed substances are transported via the blood vessels to different organs of the body, where they are used to build complex substances such as the proteins required by the body.

8. The false feet of Amoeba are used for

(a) movement only.

(b) the capture of food only.

(c) the capture of food and movement.

(d) exchange of gases only.

The answer is (c) capture of food and movement.

Amoeba constantly changes their shape and position. It pushes out one, or more finger-like projections, called pseudopodia or false feet, for movement and capture of food. Amoeba feeds on some microscopic organisms. When it senses food, it pushes out pseudopodia around the food particle and engulfs it.

9. The enzymes present in the saliva convert

(a) fats into fatty acids and glycerol.

(b) starch into simple sugars.

(c) proteins into amino acids.

(d) complex sugars into simple sugars.

The answer is (b) starch into simple sugars.

Saliva consists of salivary amylase enzyme, which breaks starch into simple sugar, which is further digested by enzymes in the stomach and small intestine.

10. Cud is the name given to the food of ruminants which is

(a) swallowed and undigested.

(b) swallowed and partially digested.

(c) properly chewed and partially digested.

(d) properly chewed and completely digested.

The answer is (b) swallowed and partially digested.

Ruminants quickly swallow the grass and store it in a part of the stomach called the rumen. Here the food gets partially digested and is called cud. But later, the cud returns to the mouth in small lumps, and the animal chews it. This process is called rumination.

11. Choose the correct order of terms that describes the process of nutrition in ruminants.

(a) swallowing → partial digestion → chewing of cud → complete digestion

(b) chewing of cud → swallowing → partial digestion → complete digestion

(c) chewing of cud → swallowing → mixing with digestive juices → digestion

(d) swallowing → chewing and mixing → partial digestion → complete digestion

The answer is (a) swallowing → partial digestion → chewing of cud → complete digestion

12. Cellulose-rich food substances are a good source of roughage in human beings because

(a) human beings do not have cellulose-digesting enzymes.

(b) cellulose gets absorbed in the human blood and converts into fibres.

(c) the cellulose-digesting bacteria convert cellulose into fibres.

(d) cellulose breaks down into smaller components which are egested as roughage.

The answer is (a) human beings do not have cellulose-digesting enzymes.

Very Short Answer Questions

13. Name the parts of the alimentary canal where

(i) water gets absorbed from undigested food.

(ii) digested food gets absorbed.

(iii) taste of the food is perceived.

(iv) bile juice is produced.

(i) Large intestine

(ii) Small intestine

(iii) Tongue

14. Mark the following statements as True or False. If false, write the correct statements.

(a) Tongue is attached to the roof of the mouth cavity at the back.

(b) The large intestine is longer and wider than the small intestine of the human alimentary canal.

(c) Mucus protects the stomach lining from damage.

(d) All heterotrophs have a similar basic process of nutrition.

• False – The tongue is attached to the floor of the mouth cavity at the back.
• False – The large intestine is shorter and wider than the small intestine of the human alimentary canal.

15. Choose the odd one out from each group and give reasons.

(i) liver, salivary gland, starch, gall bladder

(ii) stomach, liver, pancreas, salivary gland

(iii) tongue, absorption, taste, swallow

(iv) oesophagus, small intestine, large intestine, rectum

• The answer is Starch because starch is a carbohydrate, whereas the liver, salivary gland and gall bladder are the glands.
• The answer is the stomach because others are digestive glands
• Absorption is the answer because tongue, swallow and taste are related to the buccal cavity but not absorption.
• The small intestine is the answer because the oesophagus, large intestine and rectum will not take part in digestion, whereas the small intestine plays the main role in the digestion process.

16. You were blindfolded and asked to identify the drinks provided in two different glasses. You could identify drink A as lime juice and B as bitter gourd juice. How could you do it in spite of being blindfolded?

We can identify the juices with the help of different taste buds present in the tongue.

17. Fill in the blanks with suitable words:

(a) The alimentary canal stretches from to.

(b) Teeth are rooted in separate in between the.

(c) Digestion of food starts in and gets completed in.

(d) is the largest gland in the human body.

• The alimentary canal stretches from Mouth to Anus .
• Teeth are rooted in separate Sockets in between the Gums .
• Digestion of food starts in the Buccal cavity and gets completed in Small Intestine .
• The liver is the largest gland in the human body.

18. Following statements describe the five steps in animal nutrition. Read each statement and give one word for each statement. Write the terms that describe each process.

(a) Transportation of absorbed food to different parts of the body and their utilisation.

(b) Breaking of complex food substances into simpler and soluble substances.

(c) Removal of undigested and unabsorbed solid residues of food from the body.

(d) Taking food into the body.

(e) Transport of digested and soluble food from the intestine to blood vessels.

(a) Assimilation

(b) Digestion

(c) Egestion

(d) Ingestion

(e) Absorption

Short Answer Questions

19. Match the animals in Column I with their mode of feeding listed in Column II

20. Boojho took some grains of boiled rice in a test tube ‘A’, and Paheli took boiled and chewed rice in a test tube ‘B’. Both of them poured 1 – 2 drops of iodine solution into the test tube and observed the colour change. What colour change would they have observed? Give reasons for your answer.

In test-tube A colour of iodine changes to blue-black because of the reaction of iodine with starch. In test-tube B colour will not change because salivary amylase acts on starch while chewing, reducing it to simpler sugars.

21. ‘A’ got her gallbladder removed surgically as she was diagnosed with stones in her gallbladder. After the surgery, she faced problems in the digestion of certain food items when consumed in bulk. Can you tell which kind of food items would they be and why?

Those foods will be fats because of bile juice present in the gall bladder helps in the digestion of fat. Removal of gall bladder makes it hard to digest the fat.

22. Match the organs in Column I with the words listed in Column II.

23. Ruminants such as cows and buffaloes swallow their food hurriedly and then sit restfully and chew their food. Can you reason why?

To digest the food completely, ruminants keep the food as cuds.

24. Boojho and Paheli were eating their food hurriedly so that they could go out and play during the recess. Suddenly, Boojho started coughing violently. Think of the reasons why he was coughing and discuss with your friends.

Sometimes, when one eats hurriedly, talks or laughs while eating, the flap-like valve, epiglottis, closing the passage of the windpipe, remains open. The food may enter the windpipe and coughing helps to clear it.

Long Answer Questions

25. Fill in the blanks using the words listed below.

(a) The digestion of all food components is completed by the ____________ juice.

(b) Large intestine absorbs __________ and some __________ from the undigested food.

(c) Tongue is attached at the _____________ to the floor of the mouth cavity and is free at the _____________.

(d) Amoeba pushes out _____________ around the food and traps it in a food _____________.

(a) The digestion of all food components is completed by the Intestinal juice.

(b) Large intestine absorbs water and some salts from the undigested food.

(c) Tongue is attached at the back to the floor of the mouth cavity and is free at the front .

(d) Amoeba pushes out Pseudopodia around the food and traps it in a food vacuole .

26. Label the below-given Figure 2.1 as directed below in (i) to (iv) and give the name of each type of teeth.

(i) The cutting and biting teeth as ‘A’

(ii) The piercing and tearing teeth as ‘B’

(iii) The grinding and chewing teeth as ‘C’

(iv) The grinding teeth present only in adults as ‘D’

A. Incisors

C. Premolars

27. Read the following passage carefully and answer the questions that follow it. Bile juice is stored in a sac called the gallbladder, located near its organ of secretion, the liver. The gall bladder releases the bile juice into the small intestine whenever food reaches there. Though bile juice is devoid of any digestive enzymes, it is required for the digestion of fats. The fats cannot be digested easily because they are insoluble in water and are present as large globules. Bile juice breaks down big fat droplets into smaller droplets. These are then easily digested by the enzymes released from the pancreas.

(a) Which organ secretes the bile juice?

(b) Why is the digestion of fats difficult as compared to that of other nutrients?

(c) How does bile juice help in the digestion of fat?

(d) Where is the digestion of fat completed?

(e) Does bile juice digest fat completely?

(b) Insolubility of fat in water.

(c) Breaks down big fat droplets into smaller droplets.

(d) Small intestine

Label the following parts in Figure 2.2 and name them.

(a) The largest gland in our body.

(b) The organ where protein digestion starts.

(c) The organ that releases digestive juice into the small

(d) The organ where bile juice gets stored.

(b) Stomach

(c) Pancreas

(d) Gallbladder

29. Open your mouth, look into a mirror and try to count the different types of teeth in your mouth. Compare them with Figure 2.3 on page 13 of your NCERT textbook. Record your observations in the table below:

(a) Did you observe any difference in the number of teeth? If yes, could you identify which type of teeth showed the difference?

(b) Compare the number and type of teeth in an adult (say your parents or cousins who have reached the age of 25–30 or more). Note your observation.

30. Solve the crossword given in Figure 2.3.

1. Cream-coloured digestive gland

3. Undigested excretory solid residues

4. An organ that mixes saliva with the food

5. Point of defecation

7. Stored in the gallbladder

10. Finger-like outgrowth in the small intestine

13. Kind of taste buds

14. Kills bacteria in the stomach

2. Feeds with the help of pseudopodia

6. Total number of molars in one jaw of an adult

8. Largest gland

9. Watery secretion in the mouth

11. A ruminant

12. Form of food chewed by ruminants

The NCERT Exemplar solutions that we provide include relevant exercises that have been solved by our highly qualified subject experts. Detailed explanations are also provided for the students to get a clear understanding and in-depth knowledge of the topic. The NCERT exemplar we provide here is the perfect study material for students to practise and score good marks in the final exam. To get access to all the study material, they can download BYJU’S – The Learning App.

Frequently Asked Questions NCERT Exemplar for Class 7 Science Chapter 2 Nutrition in Animals

Ruminants such as cows and buffaloes swallow their food hurriedly and then sit restfully and chew their food. can you reason why, boojho and paheli were eating their food hurriedly so that they could go out and play during recess. suddenly, boojho started coughing violently. think of the reasons why he was coughing and discuss them with your friends..

Sometimes, when one eats hurriedly, talks or laughs while eating, the flap-like valve, epiglottis, closing the passage of the windpipe, remains open. The food may enter the windpipe, and coughing helps to clear it.

‘A’ got her gallbladder removed surgically as she was diagnosed with stones in her gallbladder. After the surgery, she faced problems in the digestion of certain food items when consumed in bulk. Can you tell which kind of food items would they be and why?

The food items would be fat because bile juice present in the gall bladder helps in the digestion of fat. Removal of the gallbladder makes it hard to digest the fat.

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NCERT Solutions for Class 6, 7, 8, 9, 10, 11 and 12

NCERT Exemplar Class 7 Science Chapter 2 Nutrition in Animals

April 19, 2019 by Bhagya

NCERT Exemplar Class 7 Science Chapter 2 Nutrition in Animals are part of NCERT Exemplar Class 7 Science . Here we have given NCERT Exemplar Class 7 Science Solutions Chapter 2 Nutrition in Animals.

NCERT Exemplar Class 7 Science Solutions Chapter 2 Nutrition in Animals

Question 1. Given below from (i) to (iv) are some food items. (i) Boiled and mashed potato (ii) Glucose solution (iii) A slice of bread (iv) Mustard oil Which of the above will give blue-black colour when tested with iodine? (a) (i) and(ii) (b) (i) and (iii) (c) (ii) and (iii) (d) (iii) and (iv) Solution: (b) When iodine is added to starch, it turns blue-black in colour. Potato and bread are rich in starch. Therefore, boiled and mashed potato and a slice of bread turn blue-black in colour when tested with iodine. Glucose solution does not change colour because it is digestive product of starch.

Question 2. Which of the following pair of teeth differ in structure but are similar in function? (a) Canines and incisors (b) Molars and premolars (c) Incisors and molars (d) Premolars and canines Solution: (b) Our teeth cut, tear and grind the food before we swallow it. There are four types of teeth in our mouth –

• Incisors – These are the front eight teeth, four in upper and four in lower jaw. These are well adapted for cutting and biting of food items.
• Canines – There are four canines, one canine each on either side of each jaw. These teeth are well adapted to hold and tear the food.
• Premolars – There are eight premolars in total, two premolars in each half of the both upper and lower jaws. These are well adapted to crush and grind food.
• Molars – There are twelve molars, three in each half of the both upper and lower jaws. These are well adapted to crush and grind the food.

Question 3. Read carefully the terms given below. Which of the following sets is the correct combination of organs that do not carry out any digestive functions? (a) Oesophagus, Large intestine, Rectum (b) Buccal cavity, Oesophagus, Rectum (c) Buccal cavity. Oesophagus, Large intestine (d) Small intestine, Large intestine. Rectum Solution: (a) Oesophagus gently pushes food down to the stomach in a wave like action called peristalsis. No digestion takes place in oesophagus. In large intestine, undigested food enters where water is absorbed from it. No digestion takes place in large intestine. In rectum, semi-solid residue is stored and is finally thrown out of the body through the anus in the form of faeces. No digestion takes place in rectum.

Question 4. The swallowed food moves downwards in the alimentary canal because of (a) force provided by the muscular tongue (b) the flow of water taken with the food (c) gravitational pull (d) the contraction of muscles in the wall of food pipe. Solution: (d) The muscles of oesophagus gently push the food down to the stomach in a wave-like action (contractions and relaxations) called peristalsis. Actually, this movement takes place throughout the alimentary canal to push the food forward.

Question 5. The acid present in the stomach (a) kills the harmful bacteria that may enter along with the food (b) protects the stomach lining from harmful substances (c) digests starch into simpler sugars (d) makes the medium alkaline. Solution: (a) Hydrochloric acid (HCI) present in stomach kills the harmful bacteria that enter stomach along with food and makes the medium in the stomach acidic.

Question 6. The finger-like outgrowths of Amoeba help to ingest food. However, the finger-like outgrowths of human intestine help to (a) digest the fatty food substances (b) make the food soluble (c) absorb the digested food (d) absorb the undigested food. Solution: (c) Finger-like outgrowths called villi are present in small intestine. They increase the surface area of small intestine for the absorption of digested food.

Question 7. Read the following statements with reference to the villi of small intestine. (i) They have very thin walls. (ii) They have a network of thin and small blood vessels close to the surface. (iii) They have small pores through which food can easily pass. (iv) They are finger-like projections. Identify those statements which enable the villi to absorb digested food. (a) (i), (ii) and (iv) (b) (ii), (iii) and (iv) (c) (iii) and (iv) (d) (i) and (iv) Solution: (a) Villi are the numerous, small finger-like projections present in the inner walls of the small intestine. Villi increase the surface area of small intestine for absorption of digested food due to their thin, finger-like shape. Each villus has a network of thin and small blood vessels close to its surface. The food absorbed oh the surface of villus passes into the blood in the capillaries. Villi do not have any pores.

Question 8. The false feet of Amoeba are used for (a) movement only (b) capture of food only (c) capture of food and movement (d) exchange of gases only. Solution: (c) False feet or pseudopodia of Amoeba are used for both movement and capture of food. Exchange of gases takes place by body wall through diffusion.

Question 9. The enzymes present in the saliva convert (a) fats into fatty acids and glycerol (b) starch into simple sugars (c) proteins into amino acids (d) complex sugars into simple sugars. Solution: None of these: The fluids secreted by the salivary glands constitute saliva. Saliva is slightly acidic. It contains a digestive enzyme called salivary amylase, which helps in the breakdown of starch (and not any other complex sugar) into simpler sugars (oligosaccharides) and not into simple sugars (monosaccharides).

Question 10. Cud is the name given to the food of ruminants which is (a) swallowed and undigested (b) swallowed and partially digested (c) properly chewed and partially digested (d) properly chewed and completely digested. Solution: (b)

Question 11. Choose the correct order of terms that describe the process of nutrition in ruminants. (a) Swallowing→ partial digestion →chewing of cud→complete digestion (b) Chewing of cud → swallowing → partial digestion → complete digestion (c) Chewing of cud → swallowing → mixing with digestive juices → digestion (d) Swallowing →chewing and mixing → partial digestion → complete digestion Solution: (a)

Question 12. Cellulose-rich food substances are good source of roughage in human beings because (a) human beings do not have cellulose digesting enzymes (b) cellulose gets absorbed in the human blood and converts into fibres (c) the cellulose-digesting bacteria convert cellulose into fibres (d) cellulose breaks down into smaller components which are egested as roughage. Solution: (a) Human beings do not have cellulose-digesting enzymes in their bodies and are therefore unable to digest cellulose. Since it is not digested, it passes down the entire digestive tract from mouth to anus. It acts as roughage, adds bulk to the food and helps the body to easily get rid of undigested food.

Very Short Answer Type Questions

Question 13. Name the parts of the alimentary canal where (i) water gets absorbed from undigested food (ii) digested food gets absorbed (iii) taste of the food is perceived (iv) bile juice is produced. Solution: (i) Large intestine (ii) Small intestine (iii) Tongue (iv) Liver

Question 14. Mark the following statements as true or false. If false, write the correct statements. (a) Tongue is attached to the roof of the mouth cavity at the back. (b) The large intestine is longer and wider than the small intestine of the human alimentary canal. (c) Mucus protects the stomach lining from damage. (d) All heterotrophs have a similar basic process of nutrition. Solution: (a) False — Tongue is attached to the floor of the mouth cavity at the back. (b) False – The large intestine is shorter and wider than the small intestine of the human alimentary canal. (c) True (d) True

Question 15. Choose the odd one out from each group and give reasons. (i) Liver, salivary gland, starch, gall bladder (ii) Stomach, liver, pancreas, salivary gland (iii) Tongue, absorption, taste, swallow (iv) Oesophagus, small intestine, large intestine, rectum Solution: (i) Starch is the odd one out because it is a complex sugar whereas all others i.e., liver, salivary gland and gall bladder are body organs. (ii) Stomach is the odd one out because in stomach, digestion of food takes place. Liver, pancreas and salivary glands secrete bile, pancreatic juice and saliva respectively but digestion of food does not take place inside these organs. (iii) Absorption is the odd one out because tongue (organ), taste (sense) and swallow (process) all are associated with mouth while absorption process does not occur in mouth. (iv) Small intestine is the odd one out because no digestive juices are released by other parts and hence no digestion occurs in other parts.

Question 16. You were blindfolded and asked to identify the drinks provided in two different glasses. You could identify drink A as lime juice and B as bitter gourd juice. How could you do it inspite of being blindfolded? Solution: We are able to identify different tastes with the help of different types of taste buds present in the tongue. Tongue is a fleshy muscular organ that bears a large number of taste buds that detect different tastes of food such as sweet, salty, bitter, sour, etc.

Question 17. Fill in the blanks with suitable words. (a) The alimentary canal stretches from_____to _____. (b) Teeth are rooted in separate _____ in between the_____. (c) Digestion of food starts in _____ and gets completed in_____. (d) _____ is the largest gland in the human body. Solution: (a) mouth, anus (b) sockets, gums (c) buccal cavity, small intestine (d) Liver

Question 18. Following statements describe the five steps in animal nutrition. Read each statement and give one word for each statement. Write the terms that describe each process. (a) Transportation of absorbed food to different parts of body and their utilisation. (b) Breaking of complex food substances into simpler and soluble substances. (c) Removal of undigested and unabsorbed solid residues of food from the body. (d) Taking food into the body. (e) Transport of digested and soluble food from the intestine to blood vessels. Solution: (a) Assimilation (b) Digestion (c) Egestion (d) Ingestion (e) Absorption

Short Answer Type Questions

Question 19. Match the animals in column I with their mode of feeling listed in Column II

Solution: (a) – (iii) (b) – (i) (c) – (iv) (d) – (ii)

Question 20. Boojho took some grains of boiled rice in test tube ‘A’ and Paheli took boiled and chewed rice in test tube ‘B’. Both of them poured 1 -2 drops of iodine solution into the test tube and observed the colour change. What colour change would they have observed? Give reasons for your answer. Solution: After pouring iodine solution in test tube ‘A’, its colour will change to blue-black due to the presence of starch in boiled rice. In test tube B, colour of iodine will not change because of digestion of starch into sugars by the action of salivary amylase enzyme during chewing.

Question 21. ‘A’ got her gall bladder removed surgically as she was diagnosed with stones in her gall bladder. After the surgery, she faced problems in digestion of certain food items when consumed in bulk. Can you tell which kind of food items would they be and why? Solution: The food items would be fats because bile juice which is stored by the gall bladder helps in the digestion of fats. Removal of gall bladder leads to difficulty in digestion of fats.

Question 22. Match the organs in column I with the words listed in column II.

Solution: (a) (iv) (b) (v) (c) (i) (d) (iii) (e) (ii)

Question 23. Ruminants such as cows and buffaloes swallow their food hurriedly and then sit restfully and chew their food. Can you reason why? Solution: Ruminants are hooved plant eating animals (e.g., cattle, sheep, goat etc.) possess a unique digestive system. Their stomach is divided into four compartments – rumen, reticulum, omasum and abomasum. During grazing, they quickly swallow plenty of grass without much chewing. This is an adaptation by which they need very little time for feeding. The half-chewed food is swallowed and it first goes from mouth to the rumen, the first chamber of the stomach. Here it is acted upon by bacteria and microorganisms. This half-digested food then goes to the second muscular chamber-the reticulum, from where it is sent back to the mouth as cud to be chewed again. After completely chewed, the food is sent to other parts of stomach i.e., abomasum and omasum; and ultimately to intestine for complete digestion and absorption of food.

Question 24. Boojho and Paheli were eating their food hurriedly so that they could go out and play during the recess. Suddenly, Boojho started coughing violently. Think of the reasons why he was coughing and discuss with your friends. Solution: Pharynx is a common passage for both food and air. A cartilaginous flap called epiglottis closes the opening of wind pipe while eating and thus prevents the entry of food into the wind pipe. Sometimes, when one eats hurriedly, talks or laughs while eating, the epiglottis remains open. The food may enter the wind pipe and coughing helps to clear it.

Long Answer Type Questions

Question 25. Fill in the blanks using the words listed below. [water, front, intestinal, salts, pseudopodia, back, vacuole] (a) The digestion of all food components is completed by the _____ juice. (b) Large intestine absorbs_____ and some from the undigested food. (c) Tongue is attached at the_____ to the floor of the mouth cavity and is free at the (d) Amoeba pushes out_____ around the food and traps it in a food_____. Solution: (a) intestinal (b) water, salts (c) back, front (d) pseudopodia, vacuole

Question 27. Read the following passage carefully and answer the questions that follow it. Bile juice is stored in a sac called, gall bladder, located near its organ of secretion, liver. The gall bladder releases the bile juice into the small intestine whenever food reaches there. Though bile juice is devoid of any digestive enzymes, it is required for the digestion of fats. The fats cannot be digested easily because they are insoluble in water and are present as large globules. Bile juice breaks down big fat droplets into smaller droplets. These are then easily digested by the enzymes released from the pancreas. (a) Which organ secretes the bile juice? (b) Why is digestion of fats difficult as compared to that of other nutrients? (c) How does bile juice help in digestion of fat? (d) Where is the digestion of fat completed? (e) Does bile juice digest fat completely? Solution: (a) Liver secretes the bile juice. (b) Digestion of fats is difficult because fats are insoluble in water and are present as large globules. (c) Bile juice breaks down big fat droplets into smaller droplets so that they can be easily digested. (d) Digestion of fat is completed in small intestine. (e) No. Bile juice does not contain any enzyme and therefore, it does not digest fat.

Question 29. Open your mouth, look into a mirror and try to count the different types of teeth in your mouth. Compare them with figure 2.3 on page 13 of your NCERT textbook. Record your observations in the given table

(a) Did you observe any difference in the number of teeth? If yes, could you identify which type of teeth showed the difference? (b) Compare the number and type of teeth in an adult (say your parents or cousins who have reached the age of 25-30 or more). Note your observation. Solution:

(a) Yes, molar teeth showed the difference in number of teeth. (b) A child (of class 7) has 8 incisors, 4 canines, 8 premolars and 8 molars in his mouth whereas an adult who has reached the age of 25-30 has 8 incisors, 4 canines, 8 premolars and last 4 molars are added after the age of 18 years in most human beings.

NCERT Exemplar Class 7 Science Solutions

• Chapter 1 Nutrition in Plants
• Chapter 2 Nutrition in Animals
• Chapter 3 Fibre to Fabric
• Chapter 4 Heat
• Chapter 5 Acids, Bases and Salts
• Chapter 6 Physical and Chemical Changes
• Chapter 7 Weather, Climate and Adaptations of Animals to Climate
• Chapter 8 Winds, Storms and Cyclones
• Chapter 9 Soil
• Chapter 10 Respiration in Organisms
• Chapter 11 Transportation in Animals and Plants
• Chapter 12 Reproduction in Plants
• Chapter 13 Motion and Time
• Chapter 14 Electric Current and Its Effects
• Chapter 15 Light
• Chapter 16 Water: A Precious Resource
• Chapter 17 Forests: Our Lifeline
• Chapter 18 Wastewater Story

We hope the NCERT Exemplar Class 7 Science Chapter 2 Nutrition in Animals will help you. If you have any query regarding NCERT Exemplar Class 7 Science Solutions Chapter 2 Nutrition in Animals, drop a comment below and we will get back to you at the earliest.

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Chapter 2: Nutrition in Animals

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   Chapter 2: Nutrition in Animals

  Class: VII  

  Multiple Choice Questions

Given below from (i) to (iv) are some food items.

(i) Boiled and mashed potato

(ii) Glucose solution

(iii) A slice of bread

(iv) Mustard oil

Which of the above will give blue-black colour when tested with iodine?

(a) (i) and (ii) (b) (i) and (iii)

(c) (ii) and (iii) (d) (iii) and (iv)

Which of the following pair of teeth differ in structure but are similar in function?

(a) canines and incisors.

(b) molars and premolars.

(c) incisors and molars.

(d) premolars and canines.

Read carefully the terms given below. Which of the following set is the correct combination of organs that do not carry out any digestive functions?

(a) Oesophagus, Large Intestine, Rectum

(b) Buccal cavity, Oesophagus, Rectum

(c) Buccal cavity, Oesophagus, Large Intestine

(d) Small Intestine, Large Intestine, Rectum

The swallowed food moves downwards in the alimentary canal because of

(a) force provided by the muscular tongue.

(b) the flow of water taken with the food.

(c) gravitational pull.

(d) the contraction of muscles in the wall of food pipe.

The acid present in the stomach

(a) kills the harmful bacteria that may enter along with the food.

(b) protects the stomach lining from harmful substances.

(c) digests starch into simpler sugars.

(d) makes the medium alkaline.

The finger-like outgrowths of Amoeba helps to ingest food. However, the finger-like outgrowths of human intestine helps to:

(a) digest the fatty food substances.

(b) make the food soluble.

(c) absorb the digested food.

(d) absorb the undigested food.

Read the following statements with reference to the villi of small intestine.

(i) They have very thin walls.

(ii) They have a network of thin and small blood vessels

close to the surface.

(iii) They have small pores through which food can easily

(iv) They are finger-like projections.

Identify those statements which enable the villi to absorb

digested food.

(a) (i), (ii) and (iv) (b) (ii), (iii) and (iv)

(c) (iii) and (iv) (d) (i) and (iv)

The false feet of Amoeba are used for

(a) movement only.

(b) capture of food only.

(c) capture of food and movement.

(d) exchange of gases only.

The enzymes present in the saliva convert

(a) fats into fatty acids and glycerol.

(b) starch into simple sugars.

(c) proteins into amino acids.

(d) complex sugars into simple sugars.

Question 10

Cud is the name given to the food of ruminants which is

(a) swallowed and undigested.

(b) swallowed and partially digested.

(c) properly chewed and partially digested.

(d) properly chewed and completely digested.

Question  11

Choose the correct order of terms that describes the process of nutrition in ruminants.

(a) swallowing → partial digestion → chewing of cud →

complete digestion

(b) chewing of cud → swallowing → partial digestion →

(c) chewing of cud → swallowing → mixing with digestive

juices → digestion

(d) swallowing → chewing and mixing → partial digestion

→ complete digestion

Question  12

Cellulose-rich food substances are good source of roughage in human beings because

(a) human beings do not have cellulose-digesting enzymes.

(b) cellulose gets absorbed in the human blood and converts into fibres.

(c) the cellulose-digesting bacteria convert cellulose into fibres.

(d) cellulose breaks down into smaller components which are egested as roughage.

Very Short Answer Questions

Question  13

Name the parts of the alimentary canal where

(i) water gets absorbed from undigested food.

(ii) digested food gets absorbed.

(iii) taste of the food is perceived.

(iv) bile juice is produced.

(i) Large intestine  (ii) Small intestine  (iii) Tongue  (iv) Liver

Question 14

Mark the following statements as True or False. If false, write the correct statements.

(a) Tongue is attached to the roof of the mouth cavity at the back.

(b) The large intestine is longer and wider than the small intestine of the human alimentary canal.

(c) Mucus protects the stomach lining from damage.

(d) All heterotrophs have a similar basic process of nutrition.

( a) False – Tongue is attached to the floor of the mouth cavity at the back.

(b) False – The large intestine is shorter and wider than the small intestine of the human alimentary canal.

Question 15

Choose the odd one out from each group and give reasons.

(i) liver, salivary gland, starch, gall bladder

(ii) stomach, liver, pancreas, salivary gland

(iii) tongue, absorption, taste, swallow

(iv) oesophagus, small intestine, large intestine, rectum

(i) Starch; gall bladder, liver , salivary glands are all glands.

(ii) Stomach; salivary gland, liver, pancreas are digestive glands.

(iii) Absorption; otaste, tongue, swallow are parts of the mouth.

(iv) Small intestine; no juices are released by other parts/ no digestion in other parts.

Question 16

You were blindfolded and asked to identify the drinks provided in two different glasses. You could identify drink A as lime juice and B as bitter gourd juice. How could you do it inspite of being blindfolded?

Inspite of being blindfolded you were able to identify both the juices distinguishably was because of the different types of taste buds present in the tongue.

Question  17

Fill in the blanks with suitable words:

(a) The alimentary canal stretches from to .

(b) Teeth are rooted in separate in between the .

(c) Digestion of food starts in and gets completed in .

(d) is the largest gland in the human body.

(a) mouth, anus (b) sockets, gums (c) buccal cavity, small intestine (d) liver

Question  18

Following statements describe the five steps in animal nutrition. Read each statement and give one word for each statement. Write the terms that describes each process.

(a) Transportation of absorbed food to different parts of body and their utilisation.

(b) Breaking of complex food substances into simpler and soluble substances.

(c) Removal of undigested and unabsorbed solid residues of food from the body.

(d) Taking food into the body.

(e) Transport of digested and soluble food from the intestine

to blood vessels.

(a) Assimilation (b) Digestion (c) Egestion (d) Ingestion (e) Absorption

Short Answer Questions

Question 19

Match the animals in Column I with their mode of feeding listed in Column II

(a) (iii); (b) (i); (c) (iv); (d) (ii)

Question 20

Boojho took some grains of boiled rice in test tube ‘A’ and Paheli took boiled and chewed rice in test tube ‘B’. Both of them poured 1 – 2 drops of iodine solution into the test tube and observed the colour change. What colour change would they have observed? Give reasons for your answer.

The colour in test tube "A" turned in blue black colour because of the presence of starch.

In test tube ‘B’ – The colour in test tube "B" remain unchanged because of digestion of starch into sugars.

Question 21

  ‘A’ got her gall bladder removed surgically as she was diagnosed with stones in her gall bladder. After the surgery, she faced problems in digestion of certain food items when consumed in bulk. Can you tell which kind of food items would they be and why?

The kind of food item would have been fat because the bile juice of the gall bladder

helps in the digestion of fat. Removal of gall bladder lead to the difficulty in digestion of fatty substances.

Question 22

Match the organs in Column I with the words listed in Column II.

(a) (iv); (b) (v); (c) (i); (d) (iii); (e) (ii)

Question 23

Ruminants such as cows and buffaloes swallow their food hurriedly and then sit restfully and chew their food. Can you reason why?

Ruminants take time and chew their food properly for complete digestion.

Question 24

Boojho and Paheli were eating their food hurriedly so that they could go out and play during the recess. Suddenly, Boojho started coughing violently. Think of the reasons why he was coughing and discuss with your friends.

Answer: Sometimes, on eating hurriedly, or talking or laughing while eating, the epiglottis (closing the passage of windpipe) remains open. Thus, the food swallowed may enter the wind pipe which will lead to the coughing to help it clear out.

Long Answer Questions

Question 25

Fill in the blanks using the words listed below.

water, front, intestinal, salts, pseudopodia, back, vacuole

(a) The digestion of all food components is completed by

the ____________ juice.

(b) Large intestine absorbs ___________ and some __________

from the undigested food.

(c) Tongue is attached at the _____________ to the floor of

the mouth cavity and is free at the _____________.

(d) Amoeba pushes out _____________ around the food and

traps it in a food _____________.

(a) intestinal (b) water, salts (c) back, front (d) pseudopodia, vacuole

Question 26

Label the below given Figure 2.1 as directed below in (i) to (iv)

and give the name of each type of teeth.

(i) The cutting and biting teeth as ‘A’

(ii) The piercing and tearing teeth as ‘B’

(iii) The grinding and chewing teeth as ‘C’

(iv) The grinding teeth present only in adult as ‘D’

• Incisors B. Canines C. Premolars D. Molars

Question 27

Read the following passage carefully and answer the questions that follows it.

Bile juice is stored in a sac called, gall bladder, located near its organ of secretion, liver. The gall bladder releases the bile juice into the small intestine whenever food reaches there. Though bile juice is devoid of any digestive enzymes, it is required for the digestion of fats. The fats cannot be digested easily because they are insoluble in water and are present as large globules. Bile juice breaks down big fat droplets into smaller droplets. These are then easily digested by the enzymes released from the pancreas.

(a) Which organ secretes the bile juice?

(b) Why is digestion of fats difficult as compared to that of other nutrients?

(c) How does bile juice help in digestion of fat?

(d) Where is the digestion of fat completed?

(e) Does bile juice digest fat completely?

(b) Insolubility of fat in water.

(c) Bile juice helps in breaking down big fat droplets into smaller droplets.

(d) Small intestine

Question 28

   Fig. 2.2

Label the following parts in Figure 2.2 and name them.

(a) The largest gland in our body.

(b) The organ where protein digestion starts.

(c) The organ that releases digestive juice into the small intestine.

(d) The organ where bile juice gets stored.  

Answer:  (a) Liver (b) Stomach (c) Pancreas (d) Gall bladder

Question 29

  Open your mouth, look into a mirror and try to count the different types of teeth in your mouth. Compare them with Figure 2.3 on page 13 of your NCERT textbook. Record your observations in the table below:

(a) Did you observe any difference in the number of teeth? If yes, could you identify which type of teeth showed the difference?

(b) Compare the number and type of teeth in an adult (say your parents or cousins who have reached the age of 25–30 or more). Note your observation.

There are 28 teeth in a child’s mouth with only four molars in each jaw and not six unlike in adults who have six molars in each jaw.

Question 30

Solve the crossword given as Figure 2.3.

  Fig. 2.3

• Cream-coloured digestive gland
• Undigested excretory solid residues
• Organ that mixes saliva with the food
• Point of defecation
• Stored in gall bladder
• Finger-like outgrowth in the small intestine
• Kind of taste buds
• Kills bacteria in the stomach
• Feeds with the help of pseudopodia
• Total number of molars in one jaw of an adult
• Largest gland
• Watery secretion in the mouth
• Form of food chewed by ruminants

Other Chapters

• Chapter 1: Nutrition in Plants
• Chapter 3: Fibre to Fabric
• Chapter 4: Heat
• Chapter 5: Acids, Bases and Salts
• Chapter 6: Physical and Chemical Changes
• Chapter 7: Weather, Climate and Adaptations of Animals to Climate
• Chapter 8: Winds, Storms and Cyclones
• Chapter 9: Soil
• Chapter 10: Respiration in Organisms
• Chapter 11: Respiration in Animals and Plants
• Chapter 12: Reproduction in Plants
• Chapter 13: Motion and time
• Chapter 14: Electric Current and its Effects
• Chapter 15: Light
• Chapter 16: Water - A Precious Resource

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Nutrition in Animals - Science Class 7 - Class 7 - Notes, Videos & Tests

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Important Questions Class 7 Science Chapter 2

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Important Questions Class 7 Science Chapter 2 – Nutrition in Animals

Class 7 Science Chapter 2 is about Nutrition in Animals. In Chapter 1, you have learned that in the heterotrophic mode of nutrition, organisms, including herbivorous, carnivores, and a few fungi depend on plants directly or indirectly for the nutrient requirement. Plants can produce their food through photosynthesis, whereas animals cannot synthesise food, infact many of them depend on plants. 

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In Chapter 2, you will learn about the various modes of nutrition in human beings, grass-eating animals like cows, and feeding and digestion in Amoeba. You will also learn about the complex process of nutrition involving the stages: ingestion, digestion, absorption, assimilation and egestion of food.

To score good grades, students preparing for their examinations must understand the topics and practice many questions. For this purpose, the expert panel of Extramarks have curated many study and practice materials such as NCERT Solutions, CBSE Revision notes, NCERT books, and CBSE sample papers. 

A comprehensive list of Chapter 2 Class 7 Important Science Questions is compiled carefully per the CBSE syllabus and NCERT guidelines, helping you understand the examination question pattern. To get maximum benefit, students are suggested to practice these questions rigorously through Science Class 7 Chapter 2 Important Questions available on the Extramarks’ website.

Important Questions Class 7 Science Chapter 2 – With Solutions

By referring to and practising Class 7 Science Chapter 2 Important Questions created by the Extramarks, students gain in-depth knowledge of Chapter 2 clearly and get acquainted with all types of questions, including MCQs short answer questions, long answer questions, etc. These questions and solutions have been gathered from various sources like the NCERT textbook, NCERT exemplar, past year’s examination papers, other sources, etc. Students can register and access this complete list of solutions for Important Questions Class 7 Science Chapter 2 from the Extramarks’ website. 

Below are some Important Questions Class 7 Science Chapter 2 with solutions:

Question 1. Fill in the blanks

  (a)The main steps of nutrition in humans are __________, __________,  __________,  _________ and __________.

(b) The largest gland in the human body is __________.

(c) The stomach releases hydrochloric acid and ___________ juices which act on food.

(d) The inner wall of the small intestine has many finger-like outgrowths called _________.

(e) Amoeba digests its food in the ____________.

  Answer 1.  

(a) Ingestion, Digestion, Absorption, Assimilation, Egestion

(c) Digestive

(e) Food vacuole

Question 2. Given below from (i) to (iv) are some food items.

(i)  Boiled and mashed potato

(ii) Glucose solution

(iii) A slice of bread

(iv) Mustard oil

Which of the above will give a blue-black colour when tested with iodine?

(a) (i) and (ii) 

(b) (i) and (iii)

(c) (ii) and (iii)  

(d) (iii) and (iv)

Answer 2. (b) i and iii

Explanation: Boiled, mashed potato and bread slices contain starch (carbohydrates). Hence, when a few drops of iodine solution are added, it turns into a blue-black colour.

Question 3. Describe the location and function of the Salivary gland?

Answer 3. The salivary gland is present in the buccal cavity. It secrets saliva for food digestion and helps keep the oral cavity and mouth healthy.

Question 4. Mark ‘T’ if the statement is true and ‘F’ if it is false

(a) Digestion of starch starts in the stomach. (T/F)

(b) The tongue helps in mixing food with saliva. (T/F)

(c) The gall bladder temporarily stores bile. (T/F)

(d) The ruminants bring back swallowed grass into their mouth and chew it for some time. (T/F)

Answer 4 . 

 (a) F, digestion of starch starts from the buccal cavity

 (c) T       

Question 5. Read carefully the terms given below. Which of the following sets is the correct combination of organs that do not perform digestive functions?

(a) Oesophagus, Large Intestine, Rectum

(b) Buccal cavity, Oesophagus, Rectum

(c) Buccal cavity, Oesophagus, Large Intestine

(d) Small Intestine, Large Intestine, Rectum

Answer 5. (a) Oesophagus, Large Intestine, Rectum. These organs are not directly involved in digestion as,

• The oesophagus is a straight muscular tube through which food passes down to the stomach.
• The large intestine absorbs minerals, water and some remaining nutrients from the undigested food. The leftover waste is converted into stools.
• The rectum stores the stools and is the end part of the large intestine.

Question 6. Explain the types of teeth and their functions in humans?

Answer 6. There are four types of teeth present in human beings:   

• Incisors: Incisors are flat, sharp teeth with a thin edge present at the front of the mouth. They are also referred to as anterior teeth. There are eight incisor teeth in humans.

Function: They help in biting and cutting the food into smaller pieces.

• Canines: Canines are the longest teeth that are sharp and pointed. There are four of them placed next to Incisors. They are also called cuspids or eyeteeth. 

Function: Used to tear the food.

• Premolars: Placed next to canines are premolars. These are bigger than incisors and canines. Eight premolars are found in adults, whereas children below ten do not have them. 

Function: Chewing and grinding of food is done by premolars.

• Molars: Biggest of all the teeth, molars have flat surfaces with ridges. Adults have twelve permanent molars, and children have eight primary molars.

Function: Chewing and grinding of food.

Question 7. Which part of the digestive canal is involved in:

(a) absorption of food ________________

(b) chewing of food ________________

(c) killing of bacteria ________________

(d) complete digestion of food ________________

(e) formation of faeces ________________

(a) Small intestine 

(c) Stomach 

(d) Small intestine 

(e) Large intestine  

Question 8. Read the following statements about the villi of the small intestine.

 (i) They have very thin walls.

 (ii) They have a network of thin and small blood vessels close to the surface.

 (iii) They have small pores through which food can easily pass.

 (iv) They are finger-like projections.

Identify those statements which enable the villi to absorb digested food.

(a) (i), (ii) and (iv) 

(b) (ii), (iii) and (iv)

(c) (iii) and (iv) 

(d) (i) and (iv)

Answer 8. (a)  i, ii, and iv

Question 9. Explain the Digestion and absorption process in humans?

Answer 9. The digestion and absorption process is explained below:

Digestion: Digestion takes place in the stomach and small intestine with the help of digestive juices. The stomach gradually empties its contents, called chyme, into the small intestine. The muscles of the small intestine mix food with digestive juices from the pancreas, liver, and intestine, for further digestion. The liver secretes bile juice for the digestion of fats and does not contain enzymes. Pancreatic juice is secreted by the pancreas that contains enzymes for the digestion of carbohydrates, proteins, and lipids. Further, the breakdown of these nutrients into simple components like glucose, amino and fatty acids, etc., is done by the enzymes of intestinal juice.

Absorption: Small intestine is lined up with finger-like projections called villi. Villi consist of blood vessels for nutritional absorption. The digested food molecules are passed down to the blood streams through these blood vessels. 

Question 10. The following statements describe the five steps in animal nutrition. Read each statement and give one word for each statement. Write the terms that describe each process.

 (a) Transportation of absorbed food to different body parts and their utilisation.

 (b) Breaking of complex food substances into simpler and soluble substances.

 (c) Removal of undigested and unabsorbed solid residues of food from the body.

 (d) Taking food into the body.

 (e) Transport of digested and soluble food from the intestine to blood vessels.

 Answer 10. 

(a) Assimilation 

(b) Digestion 

(c) Egestion 

(d) Ingestion

(e) Absorption 

Question 11. What are the simple forms of carbohydrates, fats, and proteins?

Answer 11: The complex components of carbohydrates, fats, and proteins are digested in the intestine into simple units as:

Carbohydrates – Glucose /Sugar

Fats – Fatty acids and glycerol

Proteins – Amino acids  

Question 12. Match the items of Column I with suitable items in Column II

Answer 12.           

Question 13. Read the following passage carefully and answer the questions that follow it.

Bile juice is stored in a sac called the gallbladder, located near its organ of secretion, the liver. liver releases the bile juice into the small intestine whenever food reaches there. Though bile juice lacks any digestive enzymes, it is required to digest fats. The fats cannot be digested easily because they are insoluble in water and are present as large globules. Bile juice breaks down big fat droplets into smaller droplets. These are then easily digested by the enzymes released from

the pancreas.

(a) Which organ secretes the bile juice?

(b) Why is digestion of fats difficult compared to other nutrients?

(c) How does bile juice help in the digestion of fat?

(d) Where is the digestion of fat completed?

(e) Does bile juice digest fat completely?

  Answer 13. 

(b) Fat is insoluble in water.

(c)  Breaks down big fat droplets into smaller droplets.

(d)  Small intestine

Question 14. How is food prevented from entering the windpipe?

Answer 14. Epiglottis is a small flap-like valve that folds over the windpipe and guides the food into the food pipe when the tongue pushes the food into the throat.

Question 15. Fill in the blanks using the words listed below. water, front, intestinal, salts,  pseudopodia, back, vacuole

(a)   The digestion of all food components is completed by the ____________ juice.

(b) Large intestine absorbs ___________ and some __________from the undigested food.

(c) Tongue is attached at the _____________ to the floor of the mouth cavity and is free at  the _____________

(d) Amoeba pushes out _____________ around the food and traps it in a food _____________.

Answer 16.  

(a) intestinal 

(b) water, salts 

(c) back, front

(d) pseudopodia, vacuole   

Question 17. Write one similarity and one difference between the nutrition of Amoeba and human beings.

Answer 17. The below table shows the similarity and differences in nutrition in Amoeba and human beings.

Question 18. Can we survive only on raw, leafy vegetables/grass? Discuss.

Answer 18. No, human beings cannot survive only on raw, leafy vegetables or grass for the following reasons:

• Human beings require all essential nutrients like carbohydrates, proteins, lipids, vitamins and minerals for survival.
• Raw, leafy vegetables or grass do not provide the required nutrients to the body, leading to less immunity and risk of catching diseases.
• Sometimes, raw vegetables contain harmful germs and viruses, making them unfit to consume.

Question 19. Match the animals in Column I with their mode of feeding listed in Column II                      

Answer 19.       

Question 20. Describe the importance of rumen in ruminants.

Answer 20. The rumen is a part of the stomach of ruminants, including the grass-eating animals like cows, buffaloes, deer, and goats. Ruminants rapidly swallow the grass and store it in the rumen, where the food is partly digested. This partly digested food called Cud returns to the mouth in small portions, and the animal chews it continuously. Rumen contains certain bacteria which play an essential role in the digestion of cellulose.  

Question 21. Why do we get instant energy from glucose?

Answer 21. Glucose, when taken directly, gets easily absorbed into the bloodstream and cells. Following the oxidation process in the cell, a high-energy molecule called Adenosine Triphosphate (ATP) is released, providing energy to the cell, resulting in instant energy. 

Question 22. Choose the odd one out from each group and give reasons.

 (a) Liver, salivary gland, starch, gallbladder

 (b) Stomach, liver, pancreas, salivary gland

 (c) Tongue, absorption, taste, swallow

 (d) Oesophagus, small intestine, large intestine, rectum

Answer 22 .  

 (a) Starch; others are glands.

 (b) Stomach; others are digestive glands.

 (c) Absorption; others are parts of the mouth.

 (d) Small intestine; no juices are released by other parts/no digestion in other parts.

Question 23. Describe the nutrition process in Amoeba.

Answer 23. The nutrition process in Amoeba is known as phagocytosis. It involves:

• Ingestion: An amoeba is a unicellular organism and does not have a mouth. It ingests food using pseudopodia(a temporary figure-like projection) to engulf the entire organism with some water and form a vacuole.
• Digestion: Digestive enzymes are released in the vacuole to break down the complex food components into small, soluble molecules.
• Absorption: The digested food is absorbed by the cytoplasm, and the food vacuole disappears after diffusion.
• Assimilation: The energy released from food after absorption is used for growth and body functions.
• Egestion: The undigested food in the food vacuole moves near the cell membrane, resulting in the rupture, and the waste is expelled. 

Question 24. Tick (√) mark the correct answer in each of the following:

(a) Fat is completely digested in the

(i) stomach (ii) mouth (iii) small intestine (iv) large intestine

(b) Water from the undigested food is absorbed mainly in the

(i) stomach (ii) food pipe (iii) small intestine (iv) large intestine

Answer 24. 

(a) Fat is completely digested in the:

(i) stomach (ii) mouth (iii) small intestine ( √) (iv) large intestine

(b) Water from the undigested food is absorbed mainly in the:

(i) stomach (ii) food pipe (iii) small intestine (iv) large intestine(√) 

Question 25. Choose the correct order of terms that describes the process of

nutrition in ruminants.

(a) Swallowing → partial digestion → chewing of Cud →

complete digestion

(b) Chewing of Cud → swallowing → partial digestion →

(c) Chewing of Cud → swallowing → mixing with digestive

juices → digestion

(d) Swallowing → chewing and mixing → partial digestion

→ complete digestion

Answer 25. (a) Swallowing → partial digestion → chewing of Cud →

Explanation:   Ruminants rapidly swallow the grass and store it in the rumen, where the food is partly digested. This partly digested food called Cud returns to the mouth in small portions, and the animal chews it continuously. Rumen contains certain bacteria which play an essential role in the complete digestion of cellulose.

Question 26. The false feet of Amoeba is used for

(a) Movement only.

(b) Capture of food only.

(c) Capture of food and movement.

(d) Exchange of gases only.

Answer 26. (c) The capture of food and movement.

Explanation: Amoeba feeds on some microscopic organisms. When it senses food, it pushes out one or more finger-like projections (pseudopodia) around the food particle and engulfs it.

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Q.1 Answer the following questions:

• Why are cows and buffaloes called ruminant animals?
• Name the structure in which: a. digestion of food particles takes place in Amoeba b. digestion of cellulose takes place in horses
• Humans are not able to digest cellulose. Why?
• Cows and buffaloes are called ruminant animals because of the presence of rumen in their stomach. In this compartment, cellulose digesting bacteria are present which help these animals in breaking down cellulose.
• a. Food vacuole b. Caecum
• Humans cannot digest cellulose due to the absence of cellulose digesting bacteria in their stomach.

Q.2 Ruminant animals quickly swallow the grass and store it in a part of their stomach. What is the name of this part?

Ruminant animals quickly swallow the grass and store it in a part of their stomach that is called rumen.

Q.3 Pseudopodia are the feet-like extensions that help Amoeba in trapping the food. Amoeba throws out pseudopodia when _________

it senses food in the vicinity

Amoeba feeds on microscopic organisms. When it senses food, it pushes out pseudopodia around the food particle and engulfs it. The food becomes trapped in a food vacuole, wherein it is digested by digestive juices.

Q.4 Write down the differences between milk teeth and permanent teeth?

The differences between milk teeth and permanent teeth are as follows—

Q.5 Write down the type of food and mode of feeding of the following animals. a) Ant b) Mosquito

(a) Ant: Type of food-Sugar, food particles Mode of feeding -Scraping

(b) Mosquito: Type of food- Blood Mode of feeding -Sucking

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Nutrition in Animals Important Questions Class 7 Science Chapter 2

Nutrition in Animals Class 7 Science Chapter 2 Important Questions and Answers are provided here. We prepared these extra questions based on the latest NCERT Class 7 Science Book. These important questions will help you to properly understand a particular concept of the chapter. Practicing class 7 important questions before the exam will help you to get excellent marks in the exam. 

Class 7 Science Chapter 2 Nutrition in Animals Important Questions

Very short answer type question.

1: Name the largest gland in the human body. Answer:  Liver

2: Define digestion. Answer:  The process of breakdown of complex substances of food into simpler form is called digestion.

3: Name the parts of alimentary canal. Answer:  Buccal cavity, oesophagus, stomach, small intestine, large intestine, rectum and anus.

4: Name the glands that secrete digestive juice. Answer:  Salivary gland, pancreas and liver

5: The process of taking food into the body is called __________. Answer:  Ingestion

6: We chew food with ____________ and break it mechanically into small pieces. Answer:  Teeth

7: Name the different types of teeth. Answer:  Incisor, canine, premolar and molar

8: The saliva breakdown starch into sugars. True/ False. Answer:  True

9: Kids of three years age have _____________ teeth. Answer:  Milk

10: Name the type of food of ant Answer:  Ant: sugar, food particles

11: Name the type of food of mosquitoes True / False Answer:  Mosquito: blood

12: Name the mode of feeding of ant and mosquitoes. Answer:  The mode of feeding of ant: scraping and the mode of feeding of mosquitoes: sucking.

13: Amoeba digests its food in the ________________. Answer:  Food vacuole.

14: The tongue helps in mixing food with the saliva. True/ False. Answer:  True.

15: Name ruminants. Answer:  Grazing animals like: Cow, buffaloes and deer.

16: Name the finger like projection present in the inner wall of the small intestine Answer:  Villi

17: Name the organ responsible for removal of undigested and unabsorbed residues from human body. Answer:  Anus

18: Bile juice is stored in a sac called___________________ Answer:  Gall bladder

19: What is the location of pancreas? Answer:  Pancreas is located just below the stomach.

20: Name the end products of carbohydrates. Answer:  Simple sugars such as glucose

21: Name the end products of fats. Answer:  Fatty acids

22: Name the end products of proteins. Answer:  Amino acids.

23: Large intestine receives digested and absorbed food. True/ False. Answer:  False

24: Define egestion. Answer:  The process of removal of faecal matter from the body through the anus is called egestion.

25: What are the causes of diarrhoea in human beings? Answer:  Infection, food poisoning or indigestion.

26: What is the full form of ORS? Answer:   Oral Rehydration Solution

27: How food is pushed down from mouth to stomach? Answer:  Food is pushed down by movement of the wall of the food pipe.

28: Human can digest cellulose. True/False. Answer:  False.

29: The digestion of cellulose takes place in ___________ present in all ruminants. Answer:   Rumen

30: Amoeba uses ___________ for movement and capture of food. Answer:  Pseudopodia.

31: Name the part of digestive canal involved in absorption of food. Answer:  Small intestine

32: Name the part of digestive canal involved in complete digestion of food. Answer:  Small intestine

33: Name the part of digestive canal involved in killing of bacteria. Answer:  Stomach

34: Name the part of digestive canal involved in formation of faeces. Answer:  Large intestine

35: Name the part of digestive canal involved in chewing of food. Answer:  Mouth

Short Answer Type Questions

1: What do you mean by animal nutrition?

Answer: Animal nutrition includes requirement of nutrients, mode of intake of food, and its utilization in the body.

2: What is digestion?

Answer:  Digestion is the process of breakdown of complex components of food such as carbohydrates into simpler substances that is absorbed and assimilated in the body.

3: Name different modes of feeding in animals?

Answer: Scraping, chewing, brewing, capturing and swallowing, sucking etc. are the different mode of feeding in animals.

4: What are villi? What are their location and function?

Answer:  The inner wall of the small intestine has thousands of finger-like outgrowths called villi. These are found in small intestine. The villi increase the surface area for absorption of food.

5: Where is the bile produced? Which component of the food does it digest?

Answer:   Bile is produced in the liver and is stored in a sac called the gall bladder. The bile plays an important role in the digestion of fats.

6: Name the type of carbohydrates that can be digested by ruminants but not by humans. Give the reasons also.

Answer:   Cellulose is the carbohydrate that can be digested by ruminants. Ruminants have large sac like structure between the small intestine and large intestine. The cellulose of the food is digested by the action of certain bacteria which are not present in human beings.

7: Why do we get instant energy from glucose?

Answer:   Because glucose easily breakdown in the cell with the help of oxygen and give carbon dioxide, water and energy 

8: What are Milk teeth and permanent teeth?

Answer:  The first set of teeth grows during infancy and they fall off at the age between six to eight years. These are termed as milk teeth. The second set that replaces them are the permanent teeth. The permanent teeth may last throughout our life or fall off during old age.

9: Name the main organs of digestive system.

Answer:  The main organs of digestive system are liver, Gall bladder Stomach, Pancreas, Small intestine, Large intestine, Rectum, Anus. The digestive tract and the associated glands together constitute the digestive system.

10: Glucose is considered as the source of instant energy, why?

Answer:  Glucose is the simplest form of carbohydrate that can be easily broken down to give energy. Hence, we get instant energy from glucose. Also, glucose mixes directly into the blood stream making it readily available to the body.

11: What is mastication?

Answer:  Mixing of saliva with chewed food is called mastication, this moisten the food and helps in swallowing food.

12: Define peristalsis?

Answer:  The powerful muscles in oesophagus gently push food down to the stomach in a wave like action which is called peristalsis.

13: What do you mean by absorption in terms of digestion of food?

Answer:  The food after digestion in stomach passes into the blood vessels in the wall of the intestine. This process is called absorption.

14: What role does villi performs in the small intestine?

Answer:  The villi increase the surface area for absorption of the digested food. The surface of the villi absorbs the digested food materials and passes them into blood. The absorbed substances are transported via the blood vessels to different organs of the body.

15: What is rumination?

Answer:  A process in which partially digested food returns to the mouth in small lumps and the animal chews it is called Rumination, and such types of animals are called Ruminants.

16: Write one similarity and one difference between the nutrition in amoeba and human beings.

Answer:  Similarity:  Both amoeba and human beings use digestive juices for digestion of food. 

Difference:  Humans need to chew food whereas in amoeba, there is no chewing of food.

17: What is the site of production of bile? Which component of the food does it digest?

Answer:   Bile is produced in liver and is stored in a sac like structure called the gall bladder. The bile plays an important role in the digestion of fats, it acts on fat and convert them into simpler form.

18: What is the role of pseudopodia in amoeba’s life?

Answer:   Pseudopodia helps amoeba in movement and capture of food, it is also called as false feet.

19: What happens to the food in large intestine of the digestive tract?

Answer:   The food that remains undigested and unabsorbed enters into the large intestine from small intestine. It is about 1.5 metre in length. Its function is to absorb water and some salts from the undigested food material.

Long Answer Type Questions

1: Can we survive only on raw, leafy vegetables / grass? Discuss.

Answer:   We know that animals like most of the bacteria, non-green plants and human being do not possess the ability to synthesize their own food. Therefore, they depend upon autotrophs for their food supply either directly or indirectly. The green plants (leafy vegetables / grass) trap solar energy and manufacture their food in the form of glucose. So, leafy vegetables and grass can provide sufficient energy required for the survival of human being.

2: Write one similarity and one difference between nutrition in amoeba and human beings.

Answer:  Similarity:  During the digestion of food, in amoeba digestive juices are secreted into the food vacuole. They act on the food and break it into simpler substances. In human being, the inner walls of stomach and the small intestine also secrete the digestive juices. The digestive juices convert complex substances of food to simpler ones. 

Difference:  Amoeba feeds on some microscopic organisms. When it senses food, it pushes out pseudopodia around the food particles. The food is trapped in a food vacuole. Human beings take food through the mouth, digest and utilize it. The food is gradually digested as food travels through the various compartments.

3: Can we survive only on raw, leafy vegetables/grass? Discuss.

Answer:   We know that including all animals, fungi, many bacteria, non-green plants, and human beings do not possess the ability to synthesize their own food. Therefore depend on autotrophs for their food supply either directly or indirectly. The green plants (leafy vegetables/grass) trap solar energy and manufacture their food in the form of glucose. So, leafy vegetables and grass can provide sufficient energy required for the survival of human beings.

4: What are the functions of the tongue in human body?

Answer: The functions of the tongue are as follows:

• It is used for talking, it is not possible to talk without this.
• It mixes saliva with the food during chewing and helps in swallowing of food.
• Due to the presence of taste buds on it, It is used to identify the taste of food like sweet or salty etc.

5: Explain tooth decay?

Answer:  Our mouth contains some useful bacteria but if we do not clean our teeth and mouth after eating, many harmful bacteria also begin to live and grow in it. These bacteria break down the sugars present from the leftover food and release acids. These acids gradually damage the teeth and causes tooth decay.

6: What are secreted inside the stomach?

Answer:  Gastric juice is secreted by the walls of stomach which contains HCl and Pepsin. HCl helps to kill the germs present in food. After mixing with the food it provides an acidic medium to the food which is essential for the activation of pepsin enzyme. Pepsin digests protein into peptides.

7: Explain digestive enzymes?

Answer:  There are different types of enzymes which are used for the digestion of different food materials like carbohydrates, fats, protein etc. The process of digestion involves the association of several catalytic organic compounds such as amylase, pepsin, lipase, trypsin etc. These organic compounds are known as digestive enzymes.

8: Name and explain the type of carbohydrates that can be digested by ruminants but not by humans.

Answer:  Cellulose is the carbohydrate that can be digested by ruminants. Ruminants have large sac like structure between the small intestine and large intestine which is responsible for digestion of cellulose in them. The cellulose of the food is digested by the action of certain bacteria which are not present in human beings.

9: Describe nutrition in amoeba.

Answer:  Amoeba is a single-celled organism found in pond water. It has a cell membrane, a dense, rounded nucleus and many bubble-like vacuoles. Amoeba constantly changes its shape and position. It pushes out one or more finger like projections, called pseudopodia or false feet for movement and capturing of food. Amoeba feeds on microscopic organisms. When it senses food, it pushes out pseudopodia around the food particle and engulfs it. The food becomes trapped in a food vacuole and digested by the digestive juices.

10: Differentiate between assimilation and egestion.

Answer:   Absorbed digested food materials are transported via the blood vessels to different organs of the body where they are used to build complex substances such as the proteins required by the body. This process is called assimilation but the process of removal of waste faecal matter through the anus from time-to-time is called egestion.

11: How does digestion occur in ruminants grass-eating animals?

Answer:   Ruminants quickly swallow the grass and store it in a separate part of the stomach called rumen. Here the food gets partially digested and is called cud. Later the cud returns to the mouth in small lumps and the animal chews it. This process is called rumination. The cellulose present in grass is digested here by the action of certain bacteria which are not present in humans.

12: What happens to the food in mouth and oesophagus of the digestive tract?

Answer:   When food is ingested the salivary glands which secrete saliva acts on it in the mouth. The saliva breaks down the starch into sugars. Oesophagus is along, narrow, muscular tube which directly leads to the stomach. It is about 25 cm long and passes downwards through the neck, the thorax and the abdominal cavity. Oesophagusgently pushes masticated food down to the stomach in a wave – like action, called peristalsis

13: What happens to the food in stomach of the digestive tract?

Answer:   The inner lining of the stomach secretes mucous, hydrochloric acid and Digestive juices. The mucous protects the lining of the stomach. The hydrochloric acid kills many bacteria that enter along with the food and makes the medium in the stomach acidic. The digestive juices break down the proteins into simpler substances.

14: What happens to the food in small intestine of the digestive tract?

Answer:   The small intestine is highly coiled and is about 7.5 metres long. Liver is the largest gland in the body. It secretes bile juice that is stored in a sac called the gall bladder. It digests fats. The pancreas is cream colour red gland secretes pancreatic juice that acts on carbohydrates and proteins and changes them into simpler forms. The carbohydrates get broken into simple sugars such as glucose, fats into fatty acids and glycerol, and proteins into amino acid, she digested food can now pass into the blood vessels in the wall of the intestine having thousands of finger-like villi. The surface of the villi absorbs the digested food materials. The absorbed substances are transported via the blood vessels to different organs of the body.

Science - Class 7 (C ...

Topic outline

Chapter 2- nutrition in animals (questions with answers) - 2.

Nutrition in Animals

Question 19:  what is the finger like projections present in the inner wall of the small intestine, question 20:  which organ expelled out the undigested and unabsorbed residues from human body, question 21:  name the term used to describe the condition in which a person passes out watery stools..

This condition is known as diarrhoea.

Question 22:  What secretes hydrochloric acid in the stomach? Or Where does hydrochloric acid come from?

Answer:  

The inner lining of the stomach secretes hydrochloric acid.

Question 23:  Where are fats digested in the body?

Fats are mainly digested in the small intestine.

Question 24:  Where is the water from undigested food absorbed in the body?

Water from undigested food is absorbed in the body in large intestine.

  Question 25:  What kills bacteria that enter along with the juices to act?

The acid kills many bacteria that enter along with the juices to act.

Question 26:    Where food is completely digested?

The food is completely digested in the small intestine.

Question 27:   Where are faeces formed in the human body?

Faeces are formed in the human body in large intestine.

Question 28:    Which glands secrete saliva?

Salivary glands secrete saliva.

Question 29:    Where food is absorbed in our body?

Absorption of food takes place in small intestine.

Question 30:    Which gland in our body secretes bile?

Bile is a digestive juice that is secreted by the liver.

Question 31:    Where faeces are stored?

Faeces are stored in rectum.

Question 32:    How many teeth do adults have?

Adults have 32 teeth.

  Question 33:    What are the end products of carbohydrate?

The carbohydrates get broken into simple sugars such as glucose.

Question 34:   Name the end products of fats.

Fatty acids and Glycerol

Question 35:    Write the end products of proteins.

Amino acids

Question 36:    What causes diarrhoea in human beings?

It may be caused by an infection, food poisoning or indigestion.

Question 37:    Which is the largest gland in the human body?

Liver is the largest gland in human body.

Question 38:    What is ingestion?

The process of taking food into the body is called ingestion.

Question 39:    What are the different types of teeth?

We have different types of teeth: incisor, canine, premolar and molar.

Question 40:    What does saliva do to food in our mouth?

The saliva breaks down the starch into sugars.

Question 41:    How does food pass from the mouth to the stomach?

Food is pushed down by movement of the wall of the food pipe.

Question 42:    What is rumen?

Ruminants have a large sac-like structure called rumen.

Question 43:    How does an amoeba move?

Amoeba uses pseudopodia (false feet) to move.

Question 44:    Where does the bile juices and pancreatic juices are released?

The bile juices and pancreatic juices are released into small intestine.

Question 45:    What are permanent teeth?

The second set that replaces a temporary milk teeth are the permanent teeth.

Question 46:    What is the shape of stomach?

Its shape is like a flattened J and it is the widest part of the alimentary canal.

Question 47:    You were blindfolded and asked to identify the drinks provided in two different glasses. You could identify drink A as lime juice and B as bitter gourd juice. How could you do it inspite of being blindfolded?

We taste food with our tongue. It has taste buds that detect different tastes of food.

Question 48:    What does animal nutrition include?

Animal nutrition includes nutrient requirement, mode of intake of food and its utilisation in the body.

Question 49:    What do you mean by animal nutrition?

Question 50:    what are the different modes of feeding in animals.

Scraping, chewing, brewing, capturing and swallowing, sucking etc. are the different mode of feeding in animals.

Question 51:    Where is the rumen located in the body of ruminants?

Ruminants have a large sac-like structure called rumen between the oesophagus and the small intestine.

Question 52:    What is digestion?

The breakdown of complex components of food into simpler substances is called digestion.

Question 53:    Name the glands that secrete digestive juices. Or Name the three digestive glands in our body.

Glands associated such as salivary glands, the liver and the pancreas secrete digestive juices.

Question 54:    What is diarrhoea?

Sometime we may have experienced the need to pass watery stool frequently. This condition is known as diarrhoea.

Question 55:    Discuss the role of hydrochloric acid secreted by gastric glands.

The acid kills many bacteria that enter along with the food and makes the medium in the stomach acidic and helps the digestive juices to act.

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CBSE Class 7 Science Nutrition in Animals

Digestion in humans, digestion in grass eating animals, view other chapters.

• Nutrition in Plants
• Acids, Bases and Salts
• Physical and Chemical Changes
• Respiration in Organisms
• Transportation in Animals and Plants
• Reproduction in Plants
• Motion and Time
• Electric Current and its Effects
• Forests: Our Lifeline
• Wastewater Story

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MCQ Class 7 Science Chapter 2 Nutrition in Animals

Check the below NCERT MCQ Class 7 Science Chapter 2 Nutrition in Animals with Answers available with PDF free download. MCQ Questions for Class 7 Science with Answers were prepared based on the latest syllabus and examination pattern issued by CBSE, NCERT and KVS. Our teachers have provided below Nutrition in Animals Class 7 Science MCQs Questions with answers which will help students to revise and get more marks in exams

Nutrition in Animals Class 7 Science MCQs Questions with Answers

Multiple Choice Questions :

Question . Insectivorous plant is –  (A) Mustard (B) Cuscuta (C) Nepenthes (D) Neem

Question.  ._ Humans are unable to digest the cellulose of the food because :  (A) Their stomach is not divided into compartments. (B) The lumen of the small intestine is narrow. (C) They are unable to chew cellulose. (D) Certain bacteria that are present in ruminants are not present in humans.

Question.  ._ Which of the following has ability to fix carbon into organic products. (A) Autotrophs (B) Heterotrophs (C) Parasites (D) All of these

Question . Identify the odd one out : (A) Neem (B) Amaranthus (C) Rose (D) Cuscuta

Question . Plants are – (A) autotrophic (B) heterotrophic (C) saprophytic (D) holozoic

Question ._ Element which is a component of chlorophyll ? (A) Fe (B) Zn (C) Cl (D) Mg

Question . Organisms who work together for mutual benefit for food and habitat : (A) Symbiotic (B) Parasitic (C) saprophyte (D) Autotrophic

Question ._ Which organisms feed on blood ?  (A) Omnivores (B) frugivorous (C) Sanguivorous (D) Insectivores

Question ._ Heterotrophs are organisms which depend on :- (A) Living host (B) Dead matter (C) Sunlight (D) Both (A) and (B)

Question . Animals which feeds upon dead organic matter are known as : (A) Omnivores (B) Carnivores (C) Detritivores (D) Herbivores

Question . Chlorophyll absorbs – (A) red light only (B) blue light only (C) red and blue light (D) green light only

Question . Most of the photosynthesis (80%) which takes place on this earth is carried on by (A) green plants on land (B) algae present in fresh water (C) algae found in ocean (D) algae present in ocean and fresh water sources

Question . The role of chlorophyll in photosynthesis is to – (A) absorb water and minerals (B) absorption of CO 2 (C) absorption of light and photolysis of water (D) absorption of light

Question.  The function of scissors is synonymous with the function of (A) Incisors (B) Premolars (C) Canines (D) Molars

Question.  Match Column-I with Column-II and select the correct option from the codes given below. Column I                             Column – II (a) Salivary gland           (i) Breaks down fats (b) Intestinal gland         (ii) Breaks down proteins into peptides (c) Pancreas                    (iii) Breaks down peptides into amino acids (d) Liver                           (iv) Breaks down starch into sugar (A) (a)-(iv),(b)-(iii),(c)-(ii),(d)-(i) (B) (a)-(i),(b)-(ii),(c)-(iii),(d)-(iv) (C) (a)-(ii), (b)-(iii), (c)-(i), (d)-(iv) (D) (a)-(iv), (b)-(ii), (c)-(iii), (d)-(i)

Question.  Read the given statements and select the correct option.  Statement 1: Plants serve as the ultimate food source for all the organisms whether herbivores or carnivores. Statement 2 : Plants use solar energy to prepare their own food. (A) Both statements 1 and 2 are true and statement 2 is the correct explanation of statement 1. (B) Both statements 1 and 2 are true but statement 2 is not the correct explanation of statement 1. (C) Statement 1 is true but statement 2 is false. (D) Both statements 1 and 2 are false.

Question.  Tanmay took a potted plant and covered one of its leaves entirely with black paper and marked it as X and left the plant in sunlight for 6 hours. After 6 hours, he plucked three leaves X, Y and Z. He immersed leaves X and Z immediately in water but smeared leaf Y with petroleum jelly prior to immersion. Bubbles were seen on the surfaces of leaves X, Y and not on leaf Z. Which of the following is most likely the reason for it ? (A) Bubbles on leaf Z are of oxygen, produced in photosynthesis. (B) Bubbles on leaf X are of carbon dioxide, produced in respiration. (C) Stomata on leaf Y are blocked with petroleum layer, thus oxygen cannot come out from leaf. (D) All of these

Question.  Ridhima took two test tubes labelled as 1 and 2 as shown in the figure. In test tube 1. she  put one table spoon of boiled rice and in test tube 2, she put one table spoon of boiled rice after chewing it for 3-5 minutes. Then she added 3-4 mL of water in both the test tubes.

Which of the following would be the expected observation b Ridhima? (A) Colour changes to blue-black in test tube 1 as rice is rich in starch. (B) Colour changes to blue-black in test tube 2 as saliva breaks down the starch into sugars. (C) Colour changes to blue-black in both the test tubes. (D) Colour does not change in either of the test tubes

Question.  Which of the following statements is/are true (T) or false (F) regarding nutrition in organisms ? (i) Photosynthesis also occurs in leaves having colour other than green. (ii) The process of photosynthesis first produces a simple carbohydrate called glucose which then gets converted into a complex carbohydrate called starch. (iii) Cuscuta is a yellow-coloured plant but it can synthesize its own food by photosynthesis. (iv) In a symbiotic association. Rhizobium bacteria derive their nutrition from fungus.       (i)   (ii)  (iii)   (iv) (A)  F     T     T      T (B)  T     T     T      F (C)  F     F     F      T (D)  T     T     F      F

Question.  Refer to the given graph which shows the effect of pH on the activities of three enzymes. X. Y and Z.

The three enzyme samples. X. Y and Z are taken from which parts of the human alimentary canal ?                X                Y                       Z (A) Duodenum    Mouth          Stomach (B) Mouth           Stomach      Duodenum (C) Stomach       Duodenum   Mouth (D) Stomach       Mouth          Duodenum

Question.  The given graph shows the percentage of undigested carbohydrates. proteins and fats through successive parts of the human alimentary canal. Why does the percentage of undigested carbohydrates remain constant in part X ? (A) All the starch has been digested and only other carbohydrates remain. (B) Protease at part X prevents the salivary amylase from acting on starch. (C) The acidic conditions of part A -prevent salivary amylase from acting on starch. (D) All the carbohydrates have been digested before reaching part X.

Question.  Which of the following statements support(s) the fact that the upper surface of a leaf is usually greener than the lower surface ? (i) More chlorophyll is present on the upper surface to absorb more light. (ii) There are more stomata present on the upper surface than the lower surface. (iii) More sugar is formed on the lower surface. (iv) The green leaves look greener under the hot Sun.

Question.  Refer to the given diagram which shows various parts of human digestive system labelled as I, II,III, IV and V.

Identify the organs and select the incorrect statement regarding them. (A) Organ V is involved in storage of bile not its production. (B) Organ II secretes digestive juice which contains mucus, hydrochloric acid and digestive enzymes. (C) Organ IV is the largest gland of the body. (D) Organ I is involved in the absorption of water from food.

Question.  Read the given statements and select the correct option.  Statement 1 : Chemical digestion of food involves breaking down of food by chewing and churning. Statement 2 : Mechanical digestion of food involves coversion of complex substances such as carbohydrates into their simpler forms such as glucose by enzymatic action. (A) Both statements 1 and 2 are true and statement 2 is the correct explanation of statement1. (B) Both statements 1 and 2 are true but statement 2 is not the correct explanation of statement 1. (C) Statement 1 is true but statement 2 is false. (D) Both statements 1 and 2 are false.

Question.  Refer to the given flow chart and select the correct option regarding P, Q, R and S.

(A) Plant P derives nutrition from the host plant with the help of haustoria and possesses hygroscopic roots which absorb moisture directly from atmosphere. (B) Plant Q possesses broad thin leaves with superficial stomata. (C) Plant R possesses special leaf modifications to catch and digest insects. (D) Plant S possesses stilt roots which help in aeration.

Question.  Digestive juices were collected from three different regions of the alimentary canal. Drops of these juices were added to wells made in an agar of starch as shown below.

After an hour, the wells were rinsed with distilled water and flooded with iodine solution. The results are shown below

Which of the following correctly identifies the regions of the alimentary canal from which the three digestive juices were obtained ?

Question.  Read the given paragraph where few words have been italicised.  Buccal cavity of humans contains two pairs of salivary glands which secrete digestive juices that help in digestion of proteins present in food. From here food enters stomach where digestion of mainly fats takes place. As this semi-digested food enters small intestine complete digestion of food occurs. Small intestine receives bile juice from pancreas which digests fats. Most absorption of water occurs in large intestine. Select the correct option regarding this. (A) Two should be replaced by four whereas proteins should not be replaced as it is correctly mentioned. (B) Fats should be replaced by carbohydrates and pancreas should be replaced by liver. (C) Digests should be replaced by emulsifies. (D) Large should be replaced by small.

Question.  How does photosynthesis help to maintain the percentage of oxygen and carbon dioxide in the atmosphere? (A) By giving off carbon dioxide and absorbing oxygen. (B) By giving off oxygen and absorbing carbon dioxide. (C) By releasing oxygen and carbon dioxide. (D) By absorbing oxygen and carbon dioxide.

Question.  Out of total solar energy reaching earth, the amount utilized by the green plants is (T) (A) 0.5% (B) 1.0% (C) 2.5 % (D) 5.0%

Question.  On Saturday, Sumit after having his lunch, forgot his lunch box in the school. When he opened it on Monday, he found that it had some blackish-brown, cottony stuff in it. Which of the following organisms can it most likely be ? (T) (A) Mushroom (B) Amoeba (C) Rhizopus (D) Either (A) or (C)

Question.  Which part of the leaf controls the rate of loss of water in the air ? (A) Midrib (B) Stomata (C) Vascular bundles (D) Veins

Question . Cuscuta is (A) Endoparasite of sheep (B) Endoparasite of human beings (C) A parasitic plant (D) A parasite on fishes

Question.  What is common among pancreatic amylase, rennin and pepsin – (A) All these are protein (B) All these are protein digesting enzymes (C) All these are not produced in stomach (D) All these act at lower pH

Question.  The equation given below represents photosynthesis.

Which of the following is represented by X and Y in the given equation ? (A) X – Carbon dioxide, Y- Oxygen (B) X – Oxygen, Y- Carbon (C) X – Carbon dioxide, Y- Hydrogen (D) X – Oxygen,Y – Carbon dioxide

Question . A group of students of class 7 th were performing an experiment . Among them a student poured alcohol on a plant continuously for a long time. The plant could not prepare food on its own any more. Which of the following statements explains the reason behind it ? (A) Alcohol absorbed all the food prepared by the plant. (B) Alcohol does not let the plant absorb carbon dioxide from the air. (C) Alcohol dissolved all the minerals present in the plant. (D) Alcohol dissolved the chlorophyll present in the plant.

Question.  From which of the four chambers of ruminant stomach, semi-digested food is moved back to mouth ? (A) Rumen (B) Abomasum (C) Omasum (D) All of these

Question.  Which one of the following is a correct match ? Type of teeth Function (A) Incisors Biting and cutting (B) Canines Crushing and grinding (C) Molars & premolars Piercing and tearing (D) Molars Smaller than premolars

Question . The phenomenon which converts light energy to chemical energy is – (A) respiration (B) photosynthesis (C) transpiration (D) none of these

Question.  What role does the insect play in the insectivorous plant ? (A) Fertilization process. (B) Provides nutrients to the plant. (C) Dispersal of seeds. (D) Provides carbon dioxide to the plant.

Question.  What is the role of the bacteria in leguminous plants ? (A) Convert oxides of nitrogen into soil nitrates. (B) Convert atmospheric nitrogen gas into soil nitrates. (C) Convert soil nitrates into gaseous nitrogen. (D) Convert plant proteins into ammonia.

Question.  Which of the following is true about parasitic plants ?

(A) (i) and (ii) only (B) (i) a nd (iii) only (C) (ii) and (iii) only (D) (i), (ii) and (iii)

Question.  Chlorophyll and melanin are both : (A) Proteins (B) Carbohydrates (C) Nucleic acids (D) Pigments

Question . Which one of the following is the best equation representing photosynthesis ?

Question . The raw materials for photosynthesis are – (A) CO 2 & O 2 (B) sunlight and CO 2 (C) water and chlorophyll (D) CO 2 and water

Question.  Which of the following statement is/are true about photosynthesis ? P. Carbon dioxide is essential for photosynthesis to take place. Q. The products of photosynthesis are simple sugars. R. Photosynthesis occurs in the green leaves of plants. S. Sunlight is not used as an energy source by plants to make food during photosynthesis. (A) P and S only (B) Q, R and S only (C) P, Q and R only (D) P, Q, R and S

Question.  What is the aim of the given experiment ?

(A) To show that air is a basic need of plants. (B) To show that food is a basic need of plants. (C) To show that water is a basic need of plants. (D) To show that sunlight is a basic need of plants

Question . Dental formula of adult human is

Question . In amoeba the digestion of food is – (A) extracellular (B) intracellular (C) intercellular (D) none of the above

Question . What is not necessary for the process of photosynthesis : (A) carbon dioxide (B) Nitrogen (C) Water (D) Sunlight

Question . In which light, plants show maximum rate of photosynthesis ? (A) Green (B) Red (C) Orange (D) Violet

Question . Chlorophyll is present in – (A) Chloroplast (B) Ribosome (C) Leucoplast (D) Chromoplast

Question.  Which of the following is insectivorous ? (A) Mushroom (B) Cuscuta (C) Mucor (D) Nepenthes

Question.  Which of the following statements is true about croton plants ? (A) Croton plants do not contain chlorophyll. (B) Croton plants are dark red in colour Hence they depend on other plants for food. (C) Croton plants have chlorophyll but it is hidden by dark red colour pigments. (D) Croton plants are parasites

Question . Teeth involved in cutting of food material are called – (A) canines (B) incisors (C) molars (D) premolars

Question . Plants are green in colour because – (A) they absorb green light only (B) they reflect green light (C) they absorb green light but reflect all other lights (D) none of the above are correct

Question . Chlorophyll is present in – (A) grana (B) stroma (C) leucoplast (D) chromoplast

Question.  Which one of the following enzyme acts efficiently at pH 2.0 (A) Pepsin (B) Trypsin (C) rennin (D) Both (A) & (C)

Question.  ._ Which of the following statement is correct about Euglena. (A) It is exclusively autotrophic. (B) It is exclusively heterotrophic. (C) It does not possess chlorophyll. (D) It is autotropic in presence of light and heterotrophic in absence of light.

Question . In amoeba absorption of the digested nutrients occurs in – (A) cytoplasm (B) plasma membrane (C) contractile vacuole (D) pseudopodia

Question . Total number of canines in permanent dental set of human is – (A) 4 (B) 6 (C) 2 (D) 12

Question . Number of permanent teeth in humans is : (A) 28 (B) 30 (C) 32 (D) 34

Question . In human being gastric juice is secreted by – (A) Liver (B) Stomach (C) Pancreas (D) Small intestine

Question . The main organ for digestion and absorption of food is – (A) large intestine (B) small intestine (C) stomach (D) liver

Question ._ Which of the followig is a part of small intestine ? (A) Caecum (B) Colon (C) Rectum (D) Duodenum

Question ._ Oesophagus opens into (A) Caecum (B) Stomach (C) Duodenum (D) Ileum

Question . In human being number of stomach is – (A) 1 (B) 2 (C) 3 (D) 4

Question . Where is bile stored in the human body ? (A) Liver (B) Gall bladder (C) Spleen (D) Blood

Question ._ Maximum digestion occurs in (A) Small intestine (B) Oesophagus (C) large intestine (D) Stomach

Question . Enzyme which breaks up starch into sugar is – (A) hydrolase (B) amylase (C) lipase (D) nuclease

Question . The folds present in small intestine which increase the area of absorption are called as – (A) Cristae (B) Villi (C) Cilia (D) Flagella

Question . Main function of bile juice is to – (A) Digest protein (B) Digest vitamins (C) help in fat digestion (D) digest carbohydrates

Question . Digestion of starch starts from – (A) stomach (B) intestine (C) oesophagus (D) mouth

Question . Digestion is completed in (A) Duodenum (B) Ileum (C) Stomach (D) Large Intestine

Question ._ Which is not a protein digestion enzyme ? (A) Trypsin (B) Amylase (C) Pepsin (D) Rennin

Question ._ The process of covering large fat droplets into small ones is called (A) Egestion (B) Assimilation (C) Emulsification (D) None of these

Fill In The Blanks

Question.  _____is the ultimate source of energy

Question.  Largest gland of body is _________

Question.  Gas released during photosynthesis is _____

Question.  Food is pushed down into the stomach by _________

Peristalsis

Question.  Intestinal juice is called as_________

Succus entericus

Question.  After complete digestion proteins break down into _________

Amino acids

Question.  Lowest rate of photosynthesis takes place in_____light.

Question.  Saliva is secreted in mouth by _________

Salivary glands

Question . Organisms those feed on fruits _____

Frugivorous

True / False

Question.  Plants obtain nitrogen from soil.

Question.  Human being is an omnivorous organism.

Question.  Plant intake carbon dioxide during respiration.

Question.  Solar energy is captured by leaves.

Question.  Mushroom is a saprophytic organisms.

Question.  Absorption and assimilation are similar processes.

Question.  Tongue gives the sense of smell.

Question.  Pointed teeth in buccal cavity are called canines.

Question.  Formula of half upper jaw of permanent teeth is 2123.

Question.  Tongue help in mixing of food with saliva.

Question.  Rhythmic contraction and relaxation of food pipe is called peristalsis.

Direction (Q. A & B) : Refer the given passage and answer the following questions. Some organisms like fungi, etc. take in nutrients in solution form from dead and decaying matter. and are called saprotrophs. Fungi also grow on pickles, leather clothes and other articles that are left in hot and humid weather for long time. Certain fungi live in the roots of trees and share shelter and nutrients. This is called symbiotic relationship.

A. Which of the following statements is/are incorrect ? (i) Fungi are called saprotrophs because they grow on pickles, leather and clothes. (ii) Saprotrophs lack chlorophyll. so cannot make food by photosynthesis. (iii) Like some fungi, lichens also show symbiotic relationship. (iv) The bacterium called Rhicobium shows symbiotic relationship as it provides shelter. water and minerals to legumes and, in return. the legumes provide food which they prepare by photosynthesis. (A) (i) and (iv) (B) (i) and (ii) (C) (ii) and (iii) (D) (iv) only

B. Which of the following organisms shows symbiotic relationship ? (A) All fungi (B) Lichens (C) Rhizobum (D) Both B & C

Match The Column

I. Column A                Column B (i) Lichens                (a) Herbivores (ii) Pitcher plant       (b) Parasitic (iii) Amarbel             (c) Insectivores (iv) Deer                    (d) Exchange of gasses (v) Stomata              (e) Symbiotic association

(i)-(e),(ii)-(c),(iii)-(b),(iv)-(a), (v)-(d)

II. Column A               Column B (i) Herbivores           (a) Amarbel (ii) Carnivores          (b) Yeast (iii) Omnivores         (c) Cow (iv) Saprophytes      (d) Lion (v) Parasite              (e) Cat

(i)-(c),(ii)-(d),(iii)-(e),(iv)-(b), (v)-(a)

III . Column A                         Column B (i) Mastication                      (a) Large intestine (ii) Absorption of water       (b) Liver  (iii) Villi                                  (c) Mouth (iv) Hydrochloric acid          (d) Stomach (v) Bile                                   (e) Small intestine

(i)-(c),(ii)-(a),(iii)-(e),(iv)-(d), (v)-(b)

IV . Column A                            Column B (i) Carbohydrate            (a) Do not contain nutrient (ii) Proteins                   (b) Glucose (iii) Fats                         (c) Amino acid (iv) vitamins                 (d) Fatty acid (v) Roughage                (e) Provide immunity

(i)-(b),(ii)-(c),(iii)-(d),(iv)-(e), (v)-(a)

Question.  Match column – 1 with column – II and select the correct option from the codes given below. Column – I                                    Column – II (a) Chlorophyll                                 (i) Rhizobium (b) Symbiosis                                   (ii) Starch (c) Insectivorous plant                      (iii) Lichen (d) Nitrogen fixing organism          (iv) Mistletoe (e) Partial parasite                          (v) Pitcher plant (A) (a) – (i), (b) – (iv), (c) – (iii), (d) – (ii), (e) – (v) (B) (a) – (iii), (b) – (v), (c) – (ii), (d) – (i), (e) – (iv) (C) (a) – (ii), (b) – (iii), (c) – (v), (d) – (i), (e) – (iv) (D) (a) – (v), (b) – (iv), (c) – (i), (d) – (ii), (e) – (iii)

Question.  Match column – I with column – II and select the correct option from the codes given below. Column – I                                                                           Column – II (a) Energy value of food is measured in calories.            (i) True (b) Starch and sugar are proteins.                                     (ii) False (c) Cellulose can be digested in our digestive system. (d) In absence of peristalsis, food from oesophagus cannot enter stomach. (A) (a) – (i), (b) – (ii), (c) – (ii), (d) – (i) (B) (a) – (ii), (b) – (i), (c) – (ii), (d) – (i) (C) (a) – (i), (b) – (i), (c) – (ii), (d) – (ii) (D) (a) – (ii), (b) – (i), (c) – (i), (d) – (ii)

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CBSE Class 7th Science Value Based Questions Chapter 2  Nutrition in Animals PDF Download

CBSE Class 7th Science Value Based Questions Chapter 2  Nutrition in Animals are the easiest questions which you see in your question paper and the scoring one all student who attempt it surely get they are just little bit difficult and examine your basic knowledge regarding the particular chapter. Science Value Based Questions for Class 7th are available here at Free of cost. These questions are expected to be asked in the Class 7th board examination. These Science Value Based Questions are from complete CBSE Syllabus.

CBSE Class 7th Science Value Based Questions Chapter 2  Nutrition in Animals

Most of these Science Value Based Questions are quite easy and students need only a basic knowledge of the chapter to answer these questions. Download CBSE Science Value Based Questions for board examinations. These Science Value Based Questions are prepared by Directorate of Education, Delhi.

CBSE Science Value Based Questions Class 7th Chapter 2  Nutrition in Animals PDF

The purpose of the Science Value Based Questions is to make students aware of how basic values are needed in the analysis of different situations and how students require to recognize those values in their daily lives. Some questions are subject related. But even if they are not, that one-minute awareness of what we write about value without any specific preparation is a good step indeed.

CBSE Science Value Based Questions for Class 7th Chapter 2  Nutrition in Animals download here in PDF format. The most CBSE Science Value Based Questions for annual examination are given here for free of cost. The additional questions for practice the Class 7th exam are collected from various sources. It covers questions asked in previous year examinations.

CBSE Science Value Based Questions for Class 7th Chapter 2  Nutrition in Animals Free PDF

Class 7th books have many questions. These questions are regularly asked in exams in one or other way. Practising such most CBSE Science Value Based Questions Chapter 2  Nutrition in Animals certainly help students to obtain good marks in the examinations. 

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7th Class Science Nutrition in Animals Question Bank

Done nutrition in animals total questions - 116.

question_answer 1) An example of heterotrophic organism which can synthesis food. .

A) Paramecium                done clear

B) Euglena done clear

C) Amoeba                       done clear

D) Hydra done clear

question_answer 2) These are blood sucking parasites.

A) Earthworm                   done clear

B) Hookworm done clear

C) Leeches           done clear

D) Bedbugs done clear

question_answer 3) The process in which faucal matter is removed through the anus.

A) Egestion      done clear

B) Digestion done clear

C) Absorption       done clear

D) Ingestion done clear

question_answer 4)  A unicellular protozoan is ________.

A) Paramecium                done clear

B) Amoeba done clear

C) Euglena           done clear

question_answer 5) Mechanism in which amoeba takes in \[{{O}_{2}}\] and gives out \[C{{O}_{2}}\]is called _______.

A) Respiration                  done clear

B) Diffusion done clear

C) Assimilation                 done clear

D) Absorption done clear

question_answer 6) Enzymes which helps in digestion in amoeba

A) Amylase                       done clear

B) Proteinase done clear

C) None of the above       done clear

D) both (a) and (b) done clear

question_answer 7) Nutrients digested by amoeba are

A) Sugar               done clear

B) Cellulose done clear

C) Protein                         done clear

D) all of the above done clear

question_answer 8) Why are nutrition in animals holozoic?

A) because they depend on plants for food done clear

B) because they are heterotrophs done clear

C) because they can shallow food done clear

D) all the above done clear

question_answer 9) The process of breakdown of food particles into small pieces is called _______.

A) Digestion                     done clear

B) Mastication done clear

C) Peristalsis                     done clear

D) Diffusion done clear

question_answer 10) Important diet in herbivorous animal?s are-

A) Protein                         done clear

C) Fat                               done clear

D) Carbohydrate done clear

question_answer 11) Raccoon is an example of which type of animal-

A) Herbivore                    done clear

B) Omnivore done clear

C) Carnivore                    done clear

D) Parasite done clear

question_answer 12) Duodenum, Jejunum, ileum are ______ parts.

A) Small Intestine    done clear

B) Large Intestine done clear

C) Esophagus?s                 done clear

D) Stomach done clear

question_answer 13) Which gland acts as mixed gland?

A) Pancreas done clear

B) Duodenum done clear

C) Hypothalamus gland done clear

D) Digestive gland done clear

question_answer 14) In which part of the human digestive system digestion doesn't take place.

A) Stomach                      done clear

B) Small Intestine done clear

C) Oesophagus       done clear

D) Large Intestine done clear

question_answer 15) Which enzyme helps in transfer of Trypsinogen to trypsin secreted from the walls of the small intestine?

A) Proteinase                    done clear

B) Enterokinase done clear

C) Amylase                       done clear

D) Lactase done clear

question_answer 16) Siphoning is the mode of feeding alone in which type of animal.

A) Humming bird             done clear

B) Butterfly done clear

C) Ant                               done clear

D) Housefly done clear

question_answer 17) Bile juice is secreted by which part of digestive system.

A) Small Intestine             done clear

B) Liver done clear

C) Pituitary gland             done clear

question_answer 18) A locomotory organ found in unicellular animal-

A) Cilia                done clear

B) flagella done clear

C) Sessile             done clear

D) Pseudopodia done clear

question_answer 19) A fresh water organism which contains cytoplasm.

A) Euglena           done clear

B) Paramaecium done clear

C) Hydra             done clear

D) Amoeba done clear

question_answer 20) Pulp is a soft material in the tooth and it is rich in

A) Starch and sugar done clear

B) Nerves and blood vessels done clear

C) acids                done clear

D) cellulose done clear

question_answer 21) What helps the herbivores to snip off foliage from branches-?

A) Canine teeth                done clear

B) Large incisors done clear

C) sharp molars       done clear

D) upper jaw done clear

question_answer 22) Which of the following is part of alimentary canal?

A) Stomach         done clear

B) Oesophagus done clear

C) Euccal cavity               done clear

D) All of these done clear

question_answer 23) Which of the following is part of the digestive tract?

A) Small intestine             done clear

B) Large intestine done clear

C) Both of these                done clear

D) None of these done clear

question_answer 24) Which of the following secrete digestive juices which convert complex substances of food into simpler substances?

A) Liver                            done clear

B) Pancreas done clear

C) Both the above            done clear

question_answer 25) In digesting which of the following components of food will a person, having liver that does not function properly, feel difficulty?

A) Carbohydrates             done clear

B) Fats done clear

C) Proteins          done clear

D) Vitamins done clear

question_answer 26) This length of small intestine and large intestine are respectively

A) 7.5 m and 1.5 m    done clear

B) 1.5 m and 7.5 m done clear

C) 7.5 m and 1.0 m          done clear

D) 1.5 m and 7.0 m done clear

question_answer 27) Digestive system consists of

A) Alimentary Canal and digestive tract done clear

B) Alimentary canal done clear

C) Digestive tract done clear

D) Digestive tract and associated glands done clear

question_answer 28) In human beings the food is taken in by which of the following parts?

A) Mouth              done clear

B) Tongue done clear

C) Teeth                           done clear

question_answer 29) The set of teeth that grows during infancy and fall off at the age of 6-8 years are called

A) milk teeth        done clear

B) sweet teeth done clear

C) permanent teeth           done clear

D) none of these done clear

question_answer 30) Which one is the widest part of alimentary canal?

A) Food pipe       done clear

B) Mouth done clear

C) Stomach         done clear

D) Tongue done clear

question_answer 31) Which of the following is incorrect for liver?

A) It is a reddish brown gland done clear

B) It is situated in upper part of abdomen done clear

C) It is the largest gland in the body done clear

D) None of the above is correct done clear

question_answer 32) The pancreatic juice acts on which of the following components of food and change it into simpler substances?

A) Fats                             done clear

B) Carbohydrates done clear

question_answer 33) The food that reaches the lower part of small intestines is

A) Completely digested done clear

B) Partly digested done clear

C) Can?t say done clear

D) All the above are correct done clear

question_answer 34) The intestinal juice changes fats into

A) Fatty acids                   done clear

B) glycerol done clear

question_answer 35) The process of change of digested absorbed substances into complex substances and its use is called

A) Absorption                   done clear

B) assimilation done clear

question_answer 36) When glucose breaks down in the cells with the help of oxygen it results in the formation of

A) Carbon dioxide            done clear

B) water done clear

question_answer 37) Select the ruminants from the following

A) Camel              done clear

B) Giraffe done clear

C) Deer                             done clear

question_answer 38) Wisdom teeth normally grow during the age of

A) 17-30 years      done clear

B) 12-15 years done clear

C) 34-40 years     done clear

D) 40-45 years done clear

question_answer 39) What do all organisms need to survive?

A) Energy             done clear

B) blood done clear

C) Carbon dioxide            done clear

D) soil done clear

question_answer 40) Which of the following is not correct for small intestine?

A) It is about 1.5m long done clear

B) It is about 7.5m long done clear

C) (c) Its walls secrete juices done clear

D) It receives secretions from liver. done clear

A) (A) \[\to \] (p), (B) \[\to \] (q), (C) \[\to \] (r), (D) \[\to \] (s) done clear

B) (A) \[\to \] (q), (B) \[\to \] (p), (C) \[\to \] (r), (D) \[\to \] (s) done clear

C) (A) \[\to \] (p), (B) \[\to \] (q), (C) \[\to \] (s), (D) \[\to \] (r) done clear

D) (A) \[\to \] (q), (B) \[\to \] (p), (C) \[\to \] (s), (D) \[\to \] (r) done clear

B) (A) \[\to \] (q), (B) \[\to \] (r), (C) \[\to \] (s), (D) \[\to \] (p) done clear

C) (A) \[\to \] (q), (B) \[\to \] (p), (C) \[\to \] (r), (D) \[\to \] (s) done clear

D) (A) \[\to \] (r), (B) \[\to \] (s), (C) \[\to \] (q), (D) \[\to \] (p) done clear

B) (A) \[\to \] (r), (B) \[\to \] (p), (C) \[\to \] (q), (D) \[\to \] (s) done clear

D) (A) \[\to \] (s), (B) \[\to \] (r), (C) \[\to \] (q), (D) \[\to \] (p) done clear

question_answer 44) DIRECTIONS: Read the passage given below and answer the questions that follow. Passage - 1 The food components gradually get digested as food travels through the various components of alimentary canal. The digested food can pass into the blood vessels in the walls of the small intestine. The digestive system consists of

A) Digestive tract done clear

B) Digestive tract and liver done clear

C) Digestive tract and pancreas done clear

D) Digestive tract and the associated glands done clear

question_answer 45) DIRECTIONS: Read the passage given below and answer the questions that follow. Passage - 1 The food components gradually get digested as food travels through the various components of alimentary canal. The digested food can pass into the blood vessels in the walls of the small intestine. The part of our body which contains salivary glands which secrete saliva is

A) Mouth           done clear

B) tongue done clear

C) Teeth                           done clear

D) all of these done clear

question_answer 46) DIRECTIONS: Read the passage given below and answer the questions that follow. Passage - 1 The food components gradually get digested as food travels through the various components of alimentary canal. The digested food can pass into the blood vessels in the walls of the small intestine. The saliva breaks down

A) Starch into sugar done clear

B) Sugar into glucose done clear

C) Fats into fatty acids done clear

D) All of the above are correct done clear

question_answer 47) DIRECTIONS: Read the passage given below and answer the questions that follow. Passage - 2 We can easily see cows, buffaloes and other grass- eating animals chewing continuously even when they are not eating. In fact, such animals quickly swallow the grass and store it in a part of stomach called rumen. Here the food gets partially digested and is called cud. Later the cud returns to the mouth in small lumps and the animals chew it. How is food ingested by grass-eating animals?

A) by chewing      done clear

B) by siphoning done clear

C) by swallowing              done clear

D) by sucking done clear

question_answer 48) DIRECTIONS: Read the passage given below and answer the questions that follow. Passage - 2 We can easily see cows, buffaloes and other grass- eating animals chewing continuously even when they are not eating. In fact, such animals quickly swallow the grass and store it in a part of stomach called rumen. Here the food gets partially digested and is called cud. Later the cud returns to the mouth in small lumps and the animals chew it. In which of the following is grass rich?

A) Cellulose     done clear

B) Starch done clear

question_answer 49) DIRECTIONS: Read the passage given below and answer the questions that follow. Passage - 2 We can easily see cows, buffaloes and other grass- eating animals chewing continuously even when they are not eating. In fact, such animals quickly swallow the grass and store it in a part of stomach called rumen. Here the food gets partially digested and is called cud. Later the cud returns to the mouth in small lumps and the animals chew it. Select the part of body of ruminants in which the cellulose of their food is digested.

C) Caecum          done clear

question_answer 50) DIRECTIONS: Read the passage given below and answer the questions that follow. Passage - 3 Amoeba is a microscopic single-celled organism found in pond water. It has a cell membrane, a rounded, dense nucleus and many small bubble-like vacuoles in its cytoplasm. Amoeba constantly changes it shape and position. It pushes out one or more finger-like projections, called pseudopodia or false feet, for movement or capture of food. A unicellular organism that has contractile vacuoles and in which ingestion of food takes place with the help of cilia is

A) Amoeba           done clear

B) Yeast done clear

C) Paramecium      done clear

question_answer 51) DIRECTIONS: Read the passage given below and answer the questions that follow. Passage - 3 Amoeba is a microscopic single-celled organism found in pond water. It has a cell membrane, a rounded, dense nucleus and many small bubble-like vacuoles in its cytoplasm. Amoeba constantly changes it shape and position. It pushes out one or more finger-like projections, called pseudopodia or false feet, for movement or capture of food. Amoeba

A) is a single-celled organism done clear

B) has a rounded, dense nucleus done clear

C) has many small bubble-like vacuoles in its cytoplasm done clear

D) all the above are correct done clear

question_answer 52) DIRECTIONS: Read the passage given below and answer the questions that follow. Passage - 3 Amoeba is a microscopic single-celled organism found in pond water. It has a cell membrane, a rounded, dense nucleus and many small bubble-like vacuoles in its cytoplasm. Amoeba constantly changes it shape and position. It pushes out one or more finger-like projections, called pseudopodia or false feet, for movement or capture of food. For capture of food, Amoeba

A) pushes out one finger-like projection done clear

B) pushes out one or more finger-like projections done clear

C) both the above are correct done clear

D) one of the above is correct done clear

question_answer 53) DIRECTIONS: The questions in this segment consist of two statements, one labeled as "Assertion A" and the other labeled as "Reason R". You are to examine these two statements carefully and decide if the Assertion A and Reason R are individually true and if so, whether the reason is a correct explanation of the assertion. Select your answers to these items using code. Given below. Assertion A: Tongue is a fleshy muscular organ. Reason R: Tongue is used for talking.

A) Both A and R are true and R is the correct explanation of A. done clear

B) Both A and R are true but R is not the correct explanation of A. done clear

C) A is true but R is false. done clear

D) A is false but R is true. done clear

question_answer 54) DIRECTIONS: The questions in this segment consist of two statements, one labeled as "Assertion A" and the other labeled as "Reason R". You are to examine these two statements carefully and decide if the Assertion A and Reason R are individually true and if so, whether the reason is a correct explanation of the assertion. Select your answers to these items using code. Given below. Assertion A: Food pipe runs through neck and chest. Reason R: When food is not accepted by our stomach it is vomited out.

question_answer 55) DIRECTIONS: The questions in this segment consist of two statements, one labeled as "Assertion A" and the other labeled as "Reason R". You are to examine these two statements carefully and decide if the Assertion A and Reason R are individually true and if so, whether the reason is a correct explanation of the assertion. Select your answers to these items using code. Given below. Assertion A: The small intestine is about 7.5m long and highly coiled. Reason R: It is smaller as compared to large intestine.

question_answer 56) DIRECTIONS: The questions in this segment consist of two statements, one labeled as "Assertion A" and the other labeled as "Reason R". You are to examine these two statements carefully and decide if the Assertion A and Reason R are individually true and if so, whether the reason is a correct explanation of the assertion. Select your answers to these items using code. Given below. Assertion A: Liver secretes a juice called bile juice. Reason R: Bile juice is stored in liver.

question_answer 57) DIRECTIONS: Read the following two statements carefully and choose the correct options. (i) Extracellular digestion takes place in small intestine (ii) Digestion does not take place in stomach

A) Statement (i) is correct while statement (ii) is incorrect. done clear

B) Statement (ii) is correct while statement (i) is incorrect. done clear

C) Both statements are correct. done clear

D) Both statements are incorrect. done clear

question_answer 58) DIRECTIONS: Read the following two statements carefully and choose the correct options. (i) Blood vessels and nerves of a tooth are present in pulp (ii) Study of teeth in called dentistry

question_answer 59) DIRECTIONS: Read the following two statements carefully and choose the correct options. (i) Process of taking in food from environment is called digestion (ii) Process by which undigested food is ejected out of the body is called assimilation

A) Small intestine done clear

C) Rectum                                   done clear

D) anus done clear

A) P                      done clear

B) Q done clear

C) R                                  done clear

D) S done clear

A) Rumen done clear

B) Cud done clear

C) Stomach                      done clear

question_answer 63) Which statement is correct-?

A) Breakdown of complex substance into simpler substance is called peristalsis. done clear

B) The process of passing of digestive food into blood vessels in the Intestine is called peristalsis. done clear

C) Movement of food through alimentary canal by the wave like movement controlled by involuntary muscles is called Peristalsis. done clear

D) The process of utilization of glucose, amino acid is called peristalsis. done clear

question_answer 64) Which is NOT true for vim?

A) These increase the surface area for absorption of digested food. done clear

B) These are small finger like projections. done clear

C) Villi protects the inner lining of stomach done clear

D) They absorb digested food materials. done clear

question_answer 65) Is this statement correct or in correct Extracellular digestion takes place in small Intestine.

A) Large: Intestine            done clear

C) Stomach                      done clear

question_answer 66) The other name of defecation is _______.

A) Assimilation                 done clear

B) Absorption done clear

C) Eyestion    done clear

A) (i) small intestine                      (ii) Rumen (iii) Abomgsum                        (iv) omasum done clear

B) (i) Rumen                    (ii) Small Intestine (iii) Small Intestine       (iv) Abomasum done clear

C) (i) Rumen                                (ii) Omasum (iii) Small Intestine                   (iv) Abomasum done clear

D) (i) Abomasum                          (ii) Omasum (iii) Rumen                              (iv) small intestine done clear

question_answer 68) The canine of our teeth helps in ______.

A) tearing the food            done clear

B) grinding the food done clear

C) biting the food  done clear

D) cutting the food done clear

question_answer 69) Which is the largest chamber in the stomach of ruminant?

A) Omasum                      done clear

B) Rumen done clear

C) Aboniasurn                  done clear

D) Rsticukim done clear

question_answer 70) The inner lining of stomach secretes

A) Mucous                        done clear

B) Hydrochloric acid done clear

C) Digestive juices            done clear

question_answer 71) What is the function of mucous secreted, by the inner lining of stomach?

A) Kills many bacteria done clear

B) Makes medium in stomach acidic. done clear

C) Protects lining of stomach done clear

D) All the above done clear

question_answer 72) The function of the acid Secreted by inner lining of stomach is

B) Makes the medium in the stomach acidic done clear

C) Helps the digestive juices to act done clear

question_answer 73) Which one is incorrect about liver?

A) It stores proteins and fats done clear

B) It purifies blood done clear

C) It removes and stores iron from dead red blood cells done clear

D) It helps in digestion by producing bile done clear

question_answer 74) Select the one who first discovered one-celled animals

A) Charaka                      done clear

B) Anton Leeuwenhoek done clear

C) Marcello Malpighi done clear

D) Galen done clear

question_answer 75) As the population of small fish in a lake decreases, the population of large fish that depend on the small fish for food will

A) Reproduce faster done clear

B) Begin to produce their own food done clear

C) Decrease in number     done clear

D) Increase in number done clear

question_answer 76) The main function of the human digestive system is to

A) Break down foods for absorption into the blood done clear

B) Exchange oxygen and carbon dioxide in the lungs done clear

C) Release energy from sugars within the cells done clear

D) Carry nutrients to all parts of the body done clear

question_answer 77) It is a carbohydrate and its digestion begins in buccal cavity. It is

A) cellulose          done clear

B) starch done clear

C) proteins            done clear

D) vitamins done clear

question_answer 78) It is a large cream colored gland and is located just below the stomach. It is

A) liver                  done clear

B) pancreas done clear

C) heart                            done clear

question_answer 79) In grass-eating animals, the grass is stored in a part of the stomach where the food gets converted into cud. This part is called

A) stomach           done clear

B) rumen done clear

C) rumination                   done clear

D) ruminant done clear

question_answer 80) It is secreted by salivary glands and its function is to break down starch into sugars. It is

A) Pancreatic juice           done clear

B) bile juice done clear

C) Saliva              done clear

question_answer 81) Ingestion is

A) the mode of chewing and cutting food in mouth. done clear

B) the process of taking food into the body. done clear

C) both the above are correct. done clear

D) none of these is correct. done clear

question_answer 82) Tongue

A) is a fleshy muscular organ and is attached at the back to the floor of buccal cavity. done clear

B) mixes saliva with food during chewing and helps in swallowing food. done clear

C) helps us to taste food. done clear

D) all the above are correct. done clear

question_answer 83) Absorption

A) is the process by which digested food passes into the blood vessels. done clear

B) is the process by which digested food passes into the blood vessels in the wall of the intestines. done clear

D) none of the above is correct done clear

question_answer 84) Assimilation is

A) the process of change of digested absorbed substances into complex substances and its use. done clear

B) Utilization by living organisms of absorbed food materials in the process of growth, reproduction and repair. done clear

C) Both the above are correct. done clear

question_answer 85) Egestion is

A) The storage of undigested and waste material in rectum done clear

B) Removal of faucal material through anus from time to time done clear

question_answer 86) We vomit out food, because

A) it is not to our taste done clear

B) it is poisonous and should not be allowed to enter our body done clear

C) it is not accepted by our stomach done clear

question_answer 87) From where does saliva come in our mouth?

A) when we see some food of pure liking done clear

B) when we are quite hungry done clear

C) it is secreted by salivary glands situated in our mouth done clear

A) (A) \[\to \] (p), (B) \[\to \] (s), (C) \[\to \] (q), (D) \[\to \] (r) done clear

B) (A) \[\to \] (q), (B) \[\to \] (p), (C) \[\to \] (s), (D) \[\to \] (r) done clear

C) (A) \[\to \] (r), (B) \[\to \] (s), (C) \[\to \] (q), (D) \[\to \] (p) done clear

D) (A) \[\to \] (r), (B) \[\to \] (q), (C) \[\to \] (s), (D) \[\to \] (p) done clear

A) (A) \[\to \] (r), (B) \[\to \] (s), (C) \[\to \] (q), (D) \[\to \] (p) done clear

B) (A) \[\to \] (r), (B) \[\to \] (q), (C) \[\to \] (p), (D) \[\to \] (s) done clear

C) (A) \[\to \] (s), (B) \[\to \] (r), (C) \[\to \] (q), (D) \[\to \] (p) done clear

A) (A) \[\to \] (s), (B) \[\to \] (r), (C) \[\to \] (p), (D) \[\to \] (q) done clear

B) (A) \[\to \] (r), (B) \[\to \] (s), (C) \[\to \] (p), (D) \[\to \] (q) done clear

C) (A) \[\to \] (q), (B) \[\to \] (p), (C) \[\to \] (s), (D) \[\to \] (r) done clear

D) (A) \[\to \] (r), (B) \[\to \] (p), (C) \[\to \] (q), (D) \[\to \] (s) done clear

question_answer 91) DIRECTIONS: Read the passage (s) given below and answer the questions that follow. Passage - 1 Our stomach expands when the food entives and contracts when it goes out. Thus the stomach can expand and contract. This is possible because our stomach is made up of

A) Bones             done clear

C) Muscles         done clear

D) iron done clear

question_answer 92) DIRECTIONS: Read the passage (s) given below and answer the questions that follow. Passage - 1 Our stomach expands when the food entives and contracts when it goes out. Thus the stomach can expand and contract. Our stomach is located

A) In the left side of the body done clear

B) In the right side of the body done clear

C) Below the abdomen done clear

D) In the chest done clear

question_answer 93) DIRECTIONS: Read the passage (s) given below and answer the questions that follow. Passage - 1 Our stomach expands when the food entives and contracts when it goes out. Thus the stomach can expand and contract. The enzyme secreted by the stomach is

A) tripain             done clear

B) pepsin done clear

D) laile done clear

question_answer 94) DIRECTIONS: Read the passage (s) given below and answer the questions that follow. Passage - 2 A new born body has no teeth. Teeth begin to appear when the baby is six to seven months old. By the age of three year children have 20 teeth. Which is the layer of the teeth below the enamel?

A) Pulp                             done clear

B) gum done clear

C) dentive       done clear

D) root done clear

question_answer 95) DIRECTIONS: Read the passage (s) given below and answer the questions that follow. Passage - 2 A new born body has no teeth. Teeth begin to appear when the baby is six to seven months old. By the age of three year children have 20 teeth. Which teeth are called grinding teeth

A) Incisors           done clear

B) canines done clear

C) Premolars                    done clear

D) molars done clear

question_answer 96) DIRECTIONS: Read the passage (s) given below and answer the questions that follow. Passage - 2 A new born body has no teeth. Teeth begin to appear when the baby is six to seven months old. By the age of three year children have 20 teeth. An adult has ____ teeth

A) 24                   done clear

B) 28 done clear

C) 32              done clear

D) 28 done clear

question_answer 97) DIRECTIONS: Read the passage (s) given below and answer the questions that follow. Passage - 3 The partly digested food reaches the lower part of small intestines and digestion of all components of food is completed here by intestinal juice. What are proteins changed into?

A) Amino acid    done clear

B) HCl acid done clear

C) Pepsin             done clear

D) starch done clear

question_answer 98) DIRECTIONS: Read the passage (s) given below and answer the questions that follow. Passage - 3 The partly digested food reaches the lower part of small intestines and digestion of all components of food is completed here by intestinal juice. Which gland is called eargest gland in the body?

C) Liver               done clear

D) heart done clear

question_answer 99) DIRECTIONS: Read the passage (s) given below and answer the questions that follow. Passage - 3 The partly digested food reaches the lower part of small intestines and digestion of all components of food is completed here by intestinal juice. Which enzyme is secreted by small intestine?

A) Amylase                       done clear

C) tripsin           done clear

D) HCl done clear

question_answer 100) DIRECTIONS: The questions in this segment consist of two statements, one labeled as "Assertion A" and the other labeled as "Reason R". You are to examine these two statements carefully and decide if the Assertion A and Reason R are individually true and if so, whether the reason is a correct explanation of the assertion. Select your answers to these items using codes given below. Assertion (A): Digestion of carbohydrates, like starch, begins in buccal cavity. Reason (R): The digested food is absorbed in the blood vessels from small intestines.

A) Both A and R is true and R is the correct explanation of A. done clear

B) Both A and R is true but R is not the correct explanation of A. done clear

question_answer 101) DIRECTIONS: The questions in this segment consist of two statements, one labeled as "Assertion A" and the other labeled as "Reason R". You are to examine these two statements carefully and decide if the Assertion A and Reason R are individually true and if so, whether the reason is a correct explanation of the assertion. Select your answers to these items using codes given below. Assertion (A): Food is pushed down the food pipe which runs through the neck and chest Reason (R): The peristaltive movement of the wall of the food pipe is a continuous process.

question_answer 102) DIRECTIONS: The questions in this segment consist of two statements, one labeled as "Assertion A" and the other labeled as "Reason R". You are to examine these two statements carefully and decide if the Assertion A and Reason R are individually true and if so, whether the reason is a correct explanation of the assertion. Select your answers to these items using codes given below. Assertion (A): Rumen is the first of four chambers of stomach of ruminants Reason (R): In rumen the food gets partly digested and is called cud.

question_answer 103) DIRECTIONS: The questions in this segment consist of two statements, one labeled as "Assertion A" and the other labeled as "Reason R". You are to examine these two statements carefully and decide if the Assertion A and Reason R are individually true and if so, whether the reason is a correct explanation of the assertion. Select your answers to these items using codes given below. Assertion (A): Digestion in amoeba is intracellular. Reason (R): In the food vacuole the food becomes trapped and is digested by the action of digestive juices secreted into food vacuole

question_answer 104) DIRECTIONS: Read the following two statements carefully and choose the correct options. (i) Permanent teeth lasts throughout life (ii) It is the second set of teeth. (iii) There are 32 milk teeth

A) Statements (i) and (iii) are incorrect but (ii) is correct. done clear

B) Statements (i) and (ii) are incorrect but (iii) is correct. done clear

C) All statements are correct. done clear

D) All statements are incorrect. done clear

question_answer 105) DIRECTIONS: Read the following two statements carefully and choose the correct options. (i) At one end stomach receives food from food pipe (ii) At one end stomach opens into small intensives. (iii) Stomach mall releases HCl acid.

question_answer 106) DIRECTIONS: Read the following two statements carefully and choose the correct options. (i) Length of large intestive in more than small intestive. (ii) Pancreas is the largest gland in human body. (iii) Gall Bladder secretes juice into small intestive

question_answer 107) DIRECTIONS: Read the following two statements carefully and choose the correct options. (i) The mode of taking in food into the body varies for different organisns. (ii) Complex components of food cannot be digested as such. (iii) Digestion of food begins in the mouth.

A) carrot, rabbit, and fox done clear

B) grain, bird, and owl done clear

C) fox, owl, and rabbit done clear

D) bird, mouse, and grasshopper done clear

A) canives            done clear

B) incisors done clear

C) premolars                     done clear

A)  I                                  done clear

B)  II done clear

C)  III                                done clear

D)  IV done clear

A) Tearing teeth                done clear

B) canives done clear

C) nolars              done clear

D) crocking teeth done clear

A) Molars             done clear

B) Premolars done clear

C) Incisors                        done clear

D) Canines done clear

question_answer 113) Which one of the following degan does not manufacture digestive juices?

A) K                     done clear

B) d done clear

C) L                     done clear

D) e done clear

A) Liver                            done clear

C) Stomach     done clear

D) Kidney done clear

A) Gall bladder        done clear

C) Stomach                      done clear

D) Heart done clear

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Question - Nutrition In animals

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