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CBSE Worksheets for Class 11 Biology

CBSE Worksheets for Class 11 Biology: One of the best teaching strategies employed in most classrooms today is Worksheets. CBSE Class 11 Biology Worksheet for students has been used by teachers & students to develop logical, lingual, analytical, and problem-solving capabilities. So in order to help you with that, we at WorksheetsBuddy have come up with Kendriya Vidyalaya Class 11 Biology Worksheets for the students of Class 11. All our CBSE NCERT Class 11 Biology practice worksheets are designed for helping students to understand various topics, practice skills and improve their subject knowledge which in turn helps students to improve their academic performance. These chapter wise test papers for Class 11 Biology will be useful to test your conceptual understanding.

Board: Central Board of Secondary Education(www.cbse.nic.in) Subject: Class 11 Biology Number of Worksheets: 40

CBSE Class 11 Biology Worksheets PDF

All the CBSE Worksheets for Class 11 Biology provided in this page are provided for free which can be downloaded by students, teachers as well as by parents. We have covered all the Class 11 Biology important questions and answers in the worksheets which are included in CBSE NCERT Syllabus. Just click on the following link and download the CBSE Class 11 Biology Worksheet. CBSE Worksheets for Class 11 Biology can also use like assignments for Class 11 Biology students.

• CBSE Worksheets for Class 11 Biology OTBA Topics and Notes Assignment
• CBSE Worksheets for Class 11 Biology Anatomy in Flowering Plants Assignment
• CBSE Worksheets for Class 11 Biology Biological Classification Assignment
• CBSE Worksheets for Class 11 Biology Photosynthesis in Higher Plants Assignment
• CBSE Worksheets for Class 11 Biology Biomolecule Assignment
• CBSE Worksheets for Class 11 Biology Breathing and Exchange of Gases Assignment
• CBSE Worksheets for Class 11 Biology Cell Cycle and Cell Division Assignment
• CBSE Worksheets for Class 11 Biology Cell-The Unit of Life Assignment
• CBSE Worksheets for Class 11 Biology Digestion and Absorbtion Enrichment Assignment
• CBSE Worksheets for Class 11 Biology Excretory Products and Elimination Assignment
• CBSE Worksheets for Class 11 Biology Excretory Products and Their Elimination Assignment
• CBSE Worksheets for Class 11 Biology Locomotion and Movement Enrichment Assignment
• CBSE Worksheets for Class 11 Biology Locomotion and Movement Assignment
• CBSE Worksheets for Class 11 Biology Morphology in Flowering in Plants Assignment
• CBSE Worksheets for Class 11 Biology Neural Control and Coordination Enrichment Assignment
• CBSE Worksheets for Class 11 Biology Neural Control and Coordination Assignment
• CBSE Worksheets for Class 11 Biology Plant Growth and Development Assignment
• CBSE Worksheets for Class 11 Biology Respiration in Plants Assignment
• CBSE Worksheets for Class 11 Biology Structural Organisation in Animals Assignment
• CBSE Worksheets for Class 11 Biology Assignment 1
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Advantages of CBSE Class 11 Biology Worksheets

• By practising NCERT CBSE Class 11 Biology Worksheet , students can improve their problem solving skills.
• Helps to develop the subject knowledge in a simple, fun and interactive way.
• No need for tuition or attend extra classes if students practise on worksheets daily.
• Working on CBSE worksheets are time-saving.
• Helps students to promote hands-on learning.
• One of the helpful resources used in classroom revision.
• CBSE Class 11 Biology Workbook Helps to improve subject-knowledge.
• CBSE Class 11 Biology Worksheets encourages classroom activities.

Worksheets of CBSE Class 11 Biology are devised by experts of WorksheetsBuddy experts who have great experience and expertise in teaching Maths. So practising these worksheets will promote students problem-solving skills and subject knowledge in an interactive method. Students can also download CBSE Class 11 Biology Chapter wise question bank pdf and access it anytime, anywhere for free. Browse further to download free CBSE Class 11 Biology Worksheets PDF .

Now that you are provided all the necessary information regarding CBSE Class 11 Biology Worksheet and we hope this detailed article is helpful. So Students who are preparing for the exams must need to have great solving skills. And in order to have these skills, one must practice enough of Class 11 Biology revision worksheets . And more importantly, students should need to follow through the worksheets after completing their syllabus.  Working on CBSE Class 11 Biology Worksheets will be a great help to secure good marks in the examination. So start working on Class 11 Biology Worksheets to secure good score.

CBSE Worksheets For Class 11

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CBSE NCERT Solutions

NCERT and CBSE Solutions for free

Class 11 Biology Worksheets

We have provided below free printable  Class 11 Biology Worksheets  for Download in PDF. The worksheets have been designed based on the latest  NCERT Book for Class 11 Biology . These  Worksheets for Grade 11 Biology  cover all important topics which can come in your standard 11 tests and examinations.  Free printable worksheets for CBSE Class 11 Biology , school and class assignments, and practice test papers have been designed by our highly experienced class 11 faculty. You can free download CBSE NCERT printable worksheets for Biology Class 11 with solutions and answers. All worksheets and test sheets have been prepared by expert teachers as per the latest Syllabus in Biology Class 11. Students can click on the links below and download all Pdf  worksheets for Biology class 11  for free. All latest Kendriya Vidyalaya  Class 11 Biology Worksheets  with Answers and test papers are given below.

Biology Class 11 Worksheets Pdf Download

Here we have the biggest database of free  CBSE NCERT KVS  Worksheets for Class 11  Biology . You can download all free Biology worksheets in Pdf for standard 11th. Our teachers have covered  Class 11 important questions and answers  for Biology as per the latest curriculum for the current academic year. All test sheets question banks for Class 11 Biology and  CBSE Worksheets for Biology Class 11  will be really useful for Class 11 students to properly prepare for the upcoming tests and examinations. Class 11th students are advised to free download in Pdf all printable workbooks given below.

Topicwise Worksheets for Class 11 Biology Download in Pdf

Advantages of Solving Class 11 Biology Worksheets

• As we have the best collection of Biology worksheets for Grade 11th, you will be able to find important questions which will come in your class tests and examinations.
• You will be able to revise all important and difficult topics given in your CBSE Biology  textbooks for Class 11 .
• All Biology worksheets for standard 11 have been provided with solutions. You will be able to solve them yourself and them compare with the answers provided by our teachers.
• Class 11th Students studying in per CBSE, NCERT and KVS schools will be able to free download all Biology chapter wise assgnments and worksheets for free in Pdf
• Class 11 Biology Workbook will help to enhance and improve subject knowledge which will help to get more marks in exams

Frequently Asked Questions by Class 11 Biology students

At https://www.cbsencertsolutions.com, we have provided the biggest database of free worksheets for Biology Class 11 which you can download in Pdf

We provide here Standard 11 Biology chapter-wise worksheets which can be easily downloaded in Pdf format for free.

You can click on the links above and get worksheets for Biology in Grade 11, all topic-wise question banks with solutions have been provided here. You can click on the links to download in Pdf.

We have provided here subject-wise Biology Grade 11 question banks, revision notes and questions for all difficult topics, and other study material.

We have provided the best quality question bank for Class 11 for all subjects. You can download them all and use them offline without the internet.

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Class 11 Biology Notes for All Chapters

• Revision Notes

Chapterwise Class 11th Biology Notes - FREE PDF Download

Class 11 Biology Notes and Summary are made to help students learn biology easily and effectively. These notes cover all the important topics, concepts, and terms clearly and simply. Class 11 Revision Notes break down complex biological processes into easy-to-understand points, making it simpler for students to grasp and remember the material. The Class 11 Biology Notes PDF highlights key details from each chapter of the Class 11 Biology NCERT Textbook , making them perfect for quick revision before exams. With these notes, students can study confidently and be well-prepared for their tests.

Download the FREE Class 11 Biology Short Notes PDF, created by experts at Vedantu and updated according to the latest CBSE Class 11 Biology Syllabus , to save time and improve your understanding of biology.

Chapter-wise Class 11 Biology Notes PDF Download

CBSE Class 11 Biology Textbook: A General Overview

The Class 11 Biology textbook covers a comprehensive range of topics essential for a strong foundation in biological sciences. Here’s a detailed look at each chapter:

Biology Class 11 Textbook

The Living World: Introduces the concept of life, its defining characteristics, and the diversity of living organisms. It explores the classification systems used to categorise different forms of life.

Biological Classification: Focuses on the methods used to classify living organisms into various groups based on their similarities and differences. It details the classification systems and hierarchical levels of the organisation.

Plant Kingdom: Examines the classification and characteristics of plants, including their evolution and diversity. It covers the major groups of plants and their distinguishing features.

Animal Kingdom: Explores the classification of animals, their diverse forms, and functions. It includes an overview of major animal groups and their evolutionary relationships.

Morphology of Flowering Plants: Studies the external structure and forms of flowering plants. It covers the various parts of a plant, such as roots, stems, leaves, and flowers, and their functions.

Anatomy of Flowering Plants: Focuses on the internal structure and organisation of flowering plants. It examines different types of plant tissues and their roles in plant growth and function.

Structural Organisation in Animals: Covers the structural and functional organisation of different animal tissues and organs. It looks at the types of animal tissues and their roles in various bodily systems.

Cell: The Unit of Life: Discusses the fundamental unit of life, the cell, including its structure and various components. It explains the functions of different organelles and their contributions to cellular activities.

Biomolecules: Investigates the chemical compounds that are essential to life, such as carbohydrates, proteins, lipids, and nucleic acids. It explores their roles and functions in biological processes.

Cell Cycle and Cell Division: Examines the processes of cell growth, division, and reproduction. It covers the stages of the cell cycle, including mitosis and meiosis, and their significance.

Photosynthesis in Higher Plants: Explains the process by which plants convert light energy into chemical energy through photosynthesis. It covers the reactions involved and the factors that affect this process.

Respiration in Plants: Discusses how plants perform cellular respiration to obtain energy. It looks at the types of respiration and the process of energy release in plants.

Plant Growth and Development: Examines how plants grow and develop throughout their life cycle. It covers growth phases, developmental processes, and the influence of environmental factors on plant growth.

Breathing and Exchange of Gases: Covers the respiratory processes in humans and animals, including the mechanisms of breathing and gas exchange in the respiratory system.

Body Fluids and Circulation: Examines the various fluids in the body and their circulation. It includes the structure of the circulatory system and the role of body fluids in transportation and regulation.

Excretory Products and Their Elimination: Focuses on the removal of metabolic waste products from the body. It covers the types of excretory products, the excretory organs, and the processes involved in waste elimination.

Locomotion and Movement: Studies the mechanisms of movement in animals. It explores different types of locomotion and the role of muscles and skeletons in facilitating movement.

Neural Control and Coordination: Explores how the nervous system controls and coordinates bodily functions. It includes the structure and function of neurons, neural pathways, and reflex actions.

Chemical Coordination and Integration: Looks at how hormones and other chemical signals regulate various body functions. It covers the endocrine glands, hormones, and their effects on growth, metabolism, and homeostasis.

Key Features of the Class 11 Biology Textbook

The Class 11 Biology textbook is designed to provide a thorough understanding of biological concepts through a variety of key features:

Comprehensive Coverage: The textbook includes a wide range of topics essential for building a strong foundation in biology, from the basics of cell structure to complex processes like photosynthesis and respiration.

Clear Explanations: Each chapter is presented with clear, concise explanations to help students grasp fundamental concepts and processes. Complex biological phenomena are broken down into understandable segments.

Illustrations and Diagrams: The textbook features numerous illustrations and diagrams that visually represent key concepts and structures, enhancing comprehension and retention.

Chapter Summaries: At the end of each chapter, summaries provide a quick review of the main points, helping students consolidate their understanding and prepare for exams.

Practice Questions: Each chapter includes a variety of practice questions and exercises to test students’ knowledge and understanding of the material.

Key Terms and Definitions: Important terms and definitions are highlighted throughout the textbook to familiarise students with essential biological vocabulary.

Conceptual Links: The textbook often draws connections between different topics, helping students understand how various biological concepts are interrelated.

Overall Important Concepts from Class 11 Biology:

Class 11 Biology covers several key ideas that are essential for understanding life sciences. Here’s a simplified overview of the most important concepts:

Cell Structure and Function: Cells are the building blocks of all living things. Each part of a cell has a specific job, like the nucleus which controls the cell, and the mitochondria which provide energy.

Genetics and Evolution: Genetics is about how traits are passed from parents to offspring. Evolution explains how species change over time through natural selection and adaptation.

Plant and Animal Diversity: This concept looks at the different types of plants and animals, how they are classified, and how they are related to each other.

Morphology and Anatomy: Morphology is the study of the form and structure of organisms, while anatomy looks at their internal parts and how they work.

Biomolecules and Metabolism: Biomolecules like proteins, carbohydrates, and fats are essential for life. Metabolism refers to the chemical processes that occur within organisms to maintain life.

Photosynthesis and Respiration: Photosynthesis is how plants make their food using sunlight. Respiration is how both plants and animals produce energy from food.

Growth and Development: This involves how living organisms grow and change from their early stages to adulthood and what factors affect their development.

Homeostasis and Regulation: Homeostasis is the process by which organisms keep their internal environment stable, despite changes in their surroundings.

Ecology and Environmental Biology: Ecology studies how organisms interact with each other and their environment. It helps us understand ecosystems and the impact of environmental changes.

Neural and Chemical Coordination: This concept explains how the nervous system and hormones regulate and coordinate bodily functions and responses to stimuli.

CBSE Class 11 Biology Weightage 2024-25

Benefits of CBSE Short Notes of Biology Class 11

Class 11th Biology Notes condense complex topics into brief, easy-to-understand summaries, highlighting only the most important points. This makes it easier to grasp and remember key concepts.

They are perfect for quick reviews before exams. Students can quickly go over essential information without needing to read through entire chapters again.

By focusing on the core ideas and summarising them, the Class 11 Biology Short Notes PDF helps improve the retention of important biological concepts.

Short notes save time by providing a quick reference. Students can avoid spending hours searching for important details in larger textbooks.

Class 11 Biology Notes include simplified explanations and key points that help clarify complex topics, making it easier to understand and apply concepts.

Students can create their short notes based on their understanding and focus on areas where they need more practice, personalising their study materials.

Class 11 Biology Notes PDFs are useful for last-minute revisions, providing a quick refresher on the main topics before tests or exams.

Exam Preparation Guide for Class 11 Biology

Understand the Syllabus: Familiarise yourself with the entire syllabus to know what topics will be covered in the exam. Break down the syllabus into manageable sections.

Use Your Textbook: Review each chapter of your textbook thoroughly. Pay attention to definitions, diagrams, and key concepts.

Create a Study Schedule: Plan a study timetable that allocates specific times for each topic. Stick to this schedule to ensure all areas are covered before the exam.

Make Summary Notes: Summarise each chapter into key points. Use these short notes for quick revision. Focus on important concepts, terms, and processes.

Solve Previous Years' Papers: Practice with past exam papers to understand the types of questions that may be asked. This will help you get familiar with the exam format and question patterns.

Revise Regularly: Regular revision helps reinforce learning. Review your notes and summaries frequently to keep concepts fresh in your mind.

Class 11 Biology notes cover essential topics, helping students understand key concepts from cell structure to ecosystems. They simplify complex ideas into easy summaries, making revision easier and more effective. These notes include important points on how cells work, genetics, plant and animal diversity, and body processes. They are perfect for quick reviews and exam preparation, helping students remember and apply what they've learned. 

Related Study Materials Links for Class 11 Biology

FAQs on Class 11 Biology Notes for All Chapters

1. Why should you choose to refer to the Class 11 Biology notes?

Class 11 Biology notes are comprehensively laid out to let you choose the chapter you want to brush upon. These revision notes cover the important topics that are highly likely to be asked in the examination. These notes have been prepared by expert teachers who have been teaching this subject for many years and know how to correctly approach them. The students can download these notes and keep them on their phones or other devices to refer to just before the exam. Since the notes are neatly organized, they can choose the topics that they need to revise on at the last minute.

2. Are these notes enough for Class 11 Biology revision?

Biology is a subject that students can score well if they have a strong theoretical and conceptual hold on the subject. All the chapters are neatly segregated and the notes cover the entire subject in short. These are also important questions that the students should refer to before their exam as it lets them master the topic and score high in their exam. The notes are made creatively and are crafted keeping the students' understanding level in mind. These notes help not just in the school exams but in the competitive exams as well.

3. What are the chapters covered in CBSE Class 11 Biology Notes?

CBSE Notes for Class 11 Biology cover the following chapters:

Chapter 1: The Living World Notes

Chapter 2: Biological Classification Notes

Chapter 3: Plant Kingdom Notes

Chapter 4: Animal Kingdom Notes

Chapter 5: Morphology of Flowering Plants Notes

Chapter 6: Anatomy of Flowering Plants Notes

Chapter 7: Structural Organisation in Animals Notes

Chapter 8: Cell the Unit of Life Notes

Chapter 9: Biomolecules Notes

Chapter 10: Cell Cycle and Cell Division Notes

Chapter 11: Photosynthesis in Higher Plants

Chapter 12: Respiration in Plants Notes

Chapter 13: Plant Growth and Development Notes

Chapter 14: Breathing and Exchange of Gases Notes

Chapter 15: Body Fluids and Circulation Notes

Chapter 16: Excretory Products and Their Elimination Notes

Chapter 17: Locomotion and Movement Notes

Chapter 18: Neural Control and Coordination Notes

Chapter 19: Chemical Coordination and Integration Notes

4. Where can I find chapter-wise notes for Class 11 Biology?

CBSE Notes for Class 11 Biology are provided by Vedantu, and available on the website as well as the mobile app. Students can find accurate, descriptive, and easily understandable notes that will assist their preparation in a better way. You can access these chapter-wise notes for all chapters of Class 11 Biology. Students can also download these notes free of cost for offline access whenever required.

5. Which book is best for Class 11 Biology?

Books published by the National Council of Educational Research and Training (NCERT) are considered one of the best resources for students studying various classes. These books have been prescribed by CBSE for a long time since they strictly adhere to the latest syllabus and curriculum. Question papers are designed based on NCERT Books and hence, they are the best to prepare for Class 11 Biology. The books contain material that can be easily comprehended and enhance the overall learning experience for students.

6. How to top in Class 11 Biology?

Scoring high marks and topping in your Class 11 Biology may seem a difficult goal to achieve but it is not impossible. With the right tips and tricks, students can make their preparation stronger before their Biology exam. These simple tips include:

Thoroughly read each chapter.

Make notes out of everything.

Solve NCERT Questions, Sample papers, important questions.

Refer to NCERT Solutions of CBSE Class 11 Biology Revision Notes.

Practice diagrams regularly.

Revise every day before the exam.

7. Which are the Chapters in Class 11 Biology with the highest weightage?

While preparing for your Class 11 Biology, make sure that you are aware of the marks distribution so that you can prioritise preparing chapters accordingly. The following are the chapters in the Class 11 Biology syllabus with the highest marks weightage:

Diversity of Living Organisms - 15

Structural Organisation in Plants and Animals - 10

Cell: Structure and Function - 15

Plant Physiology - 12

 Human Physiology - 18

8. What topics are covered in the Class 11 Biology notes?

Class 11 Biology Short Notes PDF covers all chapters, including cell structure, genetics, plant and animal diversity, morphology, physiology, and ecology.

9. How can Short Notes Of Biology Class 11 help with exam preparation?

They provide concise summaries of key concepts, making revision quicker and more efficient. They also help reinforce understanding and improve retention.

10. Are diagrams included in Class 11th Biology Notes?

Yes, notes often include diagrams to illustrate important structures and processes, helping visual learning.

REVISION NOTES FOR CLASS 11

Cbse class 11 study materials, home tuitions in india.

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

NCERT Solutions for Class 11 Biology

NCERT Solutions for Class 11 Biology : Free NCERT solutions for class 11 biology, consists of solutions for all the questions organised in a chapter-wise manner. The solutions provided here are with respect to the NCERT curriculum. The solutions are provided by our experts, keeping in mind the students’ understanding level. This ensures that the student can easily understand what is being said.

Biology is not as easy to master as the other sciences. One can’t just rote learn some formulae and mechanically apply them on the paper.

The concepts need to be understood and remembered to score well. Especially in class 11, as this will lay the foundation for all the learning to be done in the coming years. Hence, one must make sure that they understand every point mentioned in the NCERT textbook and are capable of answering any question from the material. If they get stuck in the middle, that is where these NCERT solutions come to the rescue.

They are laid out chapter wise and question wise so that it’ll be very easy for the student to navigate and make full use of. The student must try answering the question on their own. and refer to these solutions then to see if they match.

There are 22 chapters in NCERT textbook of Class 11 Biology.

• Chapter 1 The Living World
• Chapter 2 Biological Classification
• Chapter 3 Plant Kingdom
• Chapter 4 Animal Kingdom
• Chapter 5 Morphology of Flowering Plants
• Chapter 6 Anatomy of Flowering Plants
• Chapter 7 Structural Organisation in Animals
• Chapter 8 Cell The Unit of Life
• Chapter 9 Biomolecules
• Chapter 10 Cell Cycle and Cell Division
• Chapter 11 Transport in Plants
• Chapter 12 Mineral Nutrition
• Chapter 13 Photosynthesis in Higher Plants
• Chapter 14 Respiration in Plants
• Chapter 15 Plant Growth and Development
• Chapter 16 Digestion and Absorption
• Chapter 17 Breathing and Exchange of Gases
• Chapter 18 Body Fluids and Circulation
• Chapter 19 Excretory Products and their Elimination
• Chapter 20 Locomotion and Movement
• Chapter 21 Neural Control and Coordination
• Chapter 22 Chemical Coordination and Integration

NCERT Solutions for Class 11 Biology PDF

Class 11 Biology Chapter 1 The Living World

This chapter introduces the student to a wide variety of flora and fauna present in nature. It starts off with asking the question, “what is living?” and then proceeds to talk about taxonomic categories and aids. Students are familiarised to the very important topic of genus and species classification. They are led into the beautiful world of living organisms and get to discover previously unknown things about their habitat and living habits. They are also taught about biodiversity and why conservation of the same is very important. In the present age, this is a value that must be present in all of the youth and this chapter ensures that is inculcated in them.

Class 11 Biology Chapter 2 Biological Classification

This chapter further leads the student into the world of biologic classification. The five – kingdom classification is explained in a lucid, easy to understand manner. They learn about Kingdom Monera, Kingdom Protista, Kingdom Fungi, Kingdom Plantae and Kingdom Animalia. The students will also learn about the older methods of classification used by scientists like Aristotle and Linnaeus, and will get to appreciate how the system has evolved with time.

Class 11 Biology Chapter 3 Plant Kingdom

From this chapter, the students dive into the details of the world so far categorised. They learn about the further classification of the plant kingdom to make it easier to study. Throughout this chapter, they are introduced to new terms such as Gymnosperms, Angiosperms, etc. They also learn about the plant life cycle and alternation of generations. They fully understand the habitat, characteristics and physiology of the complex beings that are plants.

Class 11 Biology Chapter 4 Animal Kingdom

This chapter deals with the most important kingdom, Kingdom Animalia. Though there are differences in form and structure, there are fundamental features that enable us to categorise them conveniently. We learn about the classification of animals into phyla of Porifera, Coelenterata (Cnidaria), Ctenophora, Platyhelminthes, Aschelminthes, Annelida, Arthropoda, Mollusca, Echinodermata, Hemichordata and Chordata.  Also, the survival mechanisms of animals, their physiology, habitat and anatomy are dealt with in length. This chapter concludes Unit 1, Diversity in Living Organisms. It has a weightage of 14% in the NEET examination and 7 marks in the final examination.

Class 11 Biology Chapter 5 Morphology of flowering plants

This chapter introduces students to the standards terms and definitions they need to be familiar with. They learn about the morphology of the plant in this chapter. They come to know of the root, the regions of the root, its modifications, etc. and similarly for flowers and stems.

Class 11 Biology Chapter 6 Anatomy of Flowering Plants

This chapter introduces the student to the internal structure and functional organisation of plants. Plant tissue can be broadly categorised into meristematic and permanent. Assimilation of food and storage, transportation of water and minerals, etc are the main functions of the plant tissue. They’ll also learn about the composition and types of plant tissue.

Class 11 Biology Chapter 7 Structural Organisation in Animals

The students have already learnt about a multitude of organisms, both unicellular and multicellular. Unlike in unicellular organisms, multicellular organisms have cells organised into tissues that carry out these functions in a well-organised manner. The student studies about the morphology and anatomy of Earthworms, Cockroaches and Frogs in detail. This concludes Unit 2, Structural organisation in plants and animals, which has a weightage of 5% in NEET and 12 marks in the final exams.

Class 11 Biology Chapter 8 Cell The Unit of Life

The entirety of biology depends upon cell theory. In this chapter, the students are introduced to this crucial concept. They are introduced to Prokaryotic and Eukaryotic cells. The students learn about the different membrane-bound and non-membrane bound organelles in a cell. They learn about the structure and function of them too with the help of clear diagrams. The students also learn about the contributions made by various biologists in this field over the years.

Class 11 Biology Chapter 9 Biomolecules

In this chapter, the student learns about biomolecules, their functions and structure and why they are important. They will learn about metabolites, biomacromolecules like proteins and enzymes. They’ll get to understand the important role that enzymes get to play in biochemical reactions.

Class 11 Biology Chapter 10 Cell Cycle and Cell Division

Cells are the fundamental units of life. Understanding them is integral to understanding various other concepts in biology. In this chapter, the student is introduced to the very important concepts of cell cycle and cell division. They learn about the difference between meiosis and meitosis, and the significance of each. They learn about the phases in the cell cycyle, including Interphase, Prophase, Metaphase, Anaphase, Telophase and cytokinesis. This chapter concludes Unit 3, Cell: Structure and functions. It has a weightage of 9% in NEET and 15 marks in the final examination.

Class 11 Biology Chapter 11 Transport in Plants

Plants, unlike animals, do not have motor functions and hence ust rely upon the soil for nutrition and on their roots for taking up the same. This has led to the evolution of a fascinating transportation system in plants involving Xylem and Phloem. In this chapter, the student learns about the various aspects of the same, including Imbibing, Plasmolysis, Osmosis, Active transport and transpiration.

Class 11 Biology Chapter 12 Mineral Nutrition

In this chapter, students learn to recognise the various minerals essential for a plant’s growth and function. They learn about what categorises a mineral as essential, and about the means of transportation and mechanism of absorption of the same. They learn about the deficiency symptoms indicating the lack of said minerals too, for a holistic view on the topic. They are also briefly introduced to nitrogen fixation and its significance.

Class 11 Biology Chapter 13 Photosynthesis in Higher Plants

Students are already aware of the basic process of photosynthesis, but fail to apppreciate its complexity due to how its presented. In this chapter, they are introduced to the mechanism in such a beautiful way as to make them fall in love with the subject. They learn about the various steps, including Light reaction, Electron Transport Chain and C4 cycle. They come to know of cyclic and non-cyclic photo-phosphorylation. The importance of NADPH and ATP is also mentioned.

Class 11 Biology Chapter 14 Respiration in Plants

Photosynthesis and Respiration are the two main functions performed by plants. In this chapter, the student is introduced to the latter. They come across new terms and concepts such as Aerobic and Anaerobic respiration, Glycolysis, Fermentation, Electron Transport system and Tricarboxylic Acid Cycle.

Class 11 Biology Chapter 15 Plant Growth and Development

In this chapter, the students focus on the various intrinsic and extrinsic factors that affect a plant’s growth and development. They learn about phases of plant growth, growth regulators, differentiation, dedifferentiation, redifferentiation, Vernalisation, seed dormancy, etc. They also come to know of the function played by plant hormones in plant growth and development. This chapter concludes Unit 4, Plant physiology. It has a weightage of 6% in NEET and 18 marks in the final examination.

Class 11 Biology Chapter 16 Digestion and Absorption

In this unit, the student begins to explore human physiology and learn to understand how their own bodies function. This chapter focuses primarily on Digestion and absorption of the digested food. Digestive system disorders are also briefly discussed. The chapter also includes the various food components essential in our daily diet, and expounds on the problems caused by the deficiency of them.

Class 11 Biology Chapter 17 Breathing and Exchange of Gases

This chapter introduces the student to the concept of breathing and explains how it is different from respiration. The focus is on the respiratory system and the organs that constitute the same. Exchange of gases like Oxygen and Carbondioxide and their transport is discussed in detail. The students also get a brief overview of repiratory problems, and the conditions that lead to them.

Class 11 Biology Chapter 18 Body Fluids and Circulation

Highly complex beings like humans have comples circulatory system. This topic is dealth with in this chapter. The students explore the circulatory pathways in humans. They learn about blood and its components, lymph (tissue fluid), Blood groups, etc. They learn about cardiac disorders and also about Electrocardiographs.

Class 11 Biology Chapter 19 Excretory Products and their Elimination

As the students just dealt with gaseous waste in the previous chapter, it is only natural that they’d be curious about the elimination of solid and liquid waste generated by metabolic activities or excess ingestion. Hence, this chapter deals with the excretory system in humans. The students learn about the different components of the excretory system, including the accessory organs. They also learn about the process of urine formation and the regulation of Kidney function. They come to know of the various kidney disorders.

Class 11 Biology Chapter 20 Locomotion and Movement

This chapter introduces the student to various forms of locomotion and movement in both unicellular and multicellular organisms. Muscles and skeletal systems are discussed extensively. This chapter probes into the various voluntary and involuntary muscle actions, the structure and function of muscles, and also the various disorders associated with them, such as gout, osteoporosis and arthritis.

Class 11 Biology Chapter 21 Neural Control and Coordination

In this chapter, the student learns about the central and peripheral nervous systems in humans. They learn about impulse generation and transmission, synapses and reflex action. They learn that the neuron is the fundamental unit of the nervous system. They also get to learn the mechanims of seeing and hearing with the help of clear diagrams.

Class 11 Biology Chapter 22 Chemical coordination and integration

This chapter deals with the endocrine and exocrine glands found in organism. Special focus is on the endocrine system of humans, the hormones secreted by them, the functions of said hormones and the disorders caused by excess or deficit of the same. The students learn about the mechanism of hormone action and also about the feedback mechanism the regulates their production. This chapter concludes Unit 5, Human Physiology. It has a weightage of 20% in NEET and 18 marks in the final examination.

We have tried to provide clear, accurate solutions for all the questions, as 11th and 12th are the most important years in a student’s life. To understand this material, you might want to clear up your 10th grade concepts.

NCERT Solutions

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NCERT Solutions for Class 11 Biology

Jasmine Grover

Content Strategy Manager

NCERT Solutions for Class 11 Biology  have been provided in this article according to the new CBSE Class 11 syllabus . Class 11 Biology   NCERT Solutions covers the concepts of CBSE Biology such as biological classification, morphology, animal and plant kingdoms, biomolecules, structural organization, cell division, nutrition, transportation in plants, photosynthesis, and more. 

The chapters which have been omitted in the new CBSE Class 11 syllabus have been marked as omitted. The chapter-wise NCERT Solutions for Class 11 Biology are given below:

Unit-I Chapter 1: The Living World

​Total weightage: 2-3 marks

Some of the important topics covered in the NCERT Solutions for Class 11 Biology – The Living World are:

• Flora and Fauna
• Taxonomic groupings
• Numerical Taxonomy
• Difference between Biology and Zoology

Additional Resources:

Chapter 2: Biological Classification

​​Total weightage: 3 marks

Some of the important topics in Biological Classification are:

• Five kingdom classification
• Virus ,  Viroid ,  Prions   and  Lichen

Chapter 3: Plant Kingdom

​Total weightage: 3-4 marks

Some of the important topics in NCERT Solutions for Class 11 Biology – Plant Kingdom are:

• Gymnosperms and Angiosperms
• Scientific Name of Vitamins
• Salient features and classification of plants into major groups –  Algae , Pteridophytes , Bryophytes and Gymnosperms
• Economic Importance of Gymnosperms

Chapter 4: Animal Kingdom

Some of the important topics in NCERT Solutions for Class 11 Biology – Animal Kingdom are: 

• Salient features and classification of animals, non-chordates up to phyla level, and chordates up to class level 
• Hemichordata  
• Aschelminthes
• Platyhelminthes

Unit-II Chapter 5: Morphology of Flowering Plants

​Total weightage: 1-2 marks

Some of the important topics in Morphology of Flowering Plants are:

• Morphology of inflorescence and flower
• Solanaceae or Liliaceae

Chapter 6: Anatomy of Flowering Plants

​​Total weightage: 2-3 marks

Some of the important topics covered in NCERT Solutions for Class 11 Biology – Anatomy of Flowering Plants are:

• Anatomy and functions of different tissues and tissue systems

Chapter 7: Structural Organisation in Animals

​Total weightage: 2-3 marks

Some of the essential topics in  Structural Organisation in Animals are:

• Anatomy, functions, and Morphology of  cockroaches , frogs , earthworms
• Unicellular organisms
• Multicellular creatures   

Unit-III Chapter 8: Cell the Unit of Life

​Total weightage: 4-5 marks

Some of the important topics in NCERT Solutions for Class 11 Biology – Cell the Unit of Life are:

• Cell theory and cell as the basic unit of life
• Prokaryotic cells and Eukaryotic cells
• Cell envelope
• Cell organelles 
• Endomembrane system
• Cytoskeleton , cilia, flagella, centrioles

Chapter 9: Biomolecules

​​Total weightage: Around 5 marks

Some of the important topics covered in the chapter Biomolecules are:

• Chemical constituents of living cells

Chapter 10: Cell Cycle and Cell Division

​Total weightage: Around 5 marks

Some of the important topics in NCERT Solutions for Class 11 Biology – Cell Cycle and Cell Division are: 

• Stages of the cell cycle ,  meiosis, and mitosis , and their significance

Unit-IV Chapter 11: Transportation in Plants (Omitted)

​Total weightage: Around 1-2 marks

Some of the important topics covered in Transportation in Plants are:

• Imbibition ,  osmosis ,  plasmolysis
• Absorption, apoplast, symplast, transpiration pull, root pressure and guttation
• Transpiration and active transportation , opening and closing of stomata

Chapter 12: Mineral Nutrition (Omitted)

​​Total weightage: Around 1-2 marks

Some of the important topics whose question are covered in NCERT Solutions for Class 11 Biology – Mineral Nutrition are:

• Essential minerals, macro, and micronutrients
• Deficiency symptoms
• Mineral toxicity
• Nitrogen metabolism, nitrogen cycle, biological  nitrogen fixation

Chapter 13: Photosynthesis in Higher Plants

Some of the important topics related to Photosynthesis in Higher Plants are:

• Photosynthesis
• Cyclic photophosphorylation and non-cyclic photophosphorylation
• Chemiosmotic hypothesis
• Photorespiration
• C3 and C4 pathways
• Factors affecting photosynthesis.

Chapter 14: Respiration in Plants

Some of the important topics for the chapter Respiration in Plants are:

• Exchange of gases
• Cellular respiration 
• Aerobic Respiration
• Amphibolic pathways
• Respiratory quotient.

Chapter 15: Plant Growth and Development

Total weightage: Around 1-2 marks

Some of the important topics in NCERT Solutions for Class 11 Biology – Plant Growth and Development are:

• Seed germination
• Growth regulators  

Unit-V Chapter 16: Digestion and Absorption (Omitted)

Total weightage: Around 2 marks

Some of the important concepts in Digestion and Absorption are:

• Alimentary canal and digestive glands, digestive enzymes, and gastrointestinal hormones
• Peristalsis
• Nutritional,  digestive disorders and the  digestive system

Chapter 17: Breathing and Exchange of Gases

Total weightage: Around 1-2 marks

Some of the important topics in NCERT Solutions for Class 11 Biology – Breathing and Exchange of Gases are:

• Respiratory organs in animals 
• Respiratory system in humans
• Mechanism of breathing and its regulation in humans 

Chapter 18: Body Fluids and Circulation

Some of the important concepts covered in NCERT Solutions for Class 11 Biology – Body Fluids and Circulation are:

• Composition of the blood, blood groups, coagulation of blood
• Composition of lymph and its function
• Human circulatory system
• Double circulation
• Regulation of cardiac activity
• Disorders of circulatory system 

Chapter 19: Excretory Products and their Elimination

Some of the important topics discussed in Excretory Products and their Elimination are:

• Modes of excretion  
• Human excretory system  
• Urine formation , osmoregulation
• Regulation of kidney function 
• Role of other organs in excretion
• Disorders – uremia, renal failure, renal calculi, nephritis; dialysis and artificial kidney, a kidney transplant.

Chapter 20: Locomotion and Movement

​Total weightage: Around 2 marks

Some of the important topics listed in NCERT Solutions for Class 11 Biology – Locomotion and Movement are:

• Skeletal muscle, contractile proteins, and muscle contraction
• Types of movement

Chapter 21: Neural Control and Coordination

​Total weightage: Around 1-2 marks

Some of the important topics covered in Neural Control and Coordination are:

• Neuron and nerves
• Brain Diseases
• Peripheral nervous system and visceral nervous system
• Generation and conduction of  nerve impulses

Chapter 22: Chemical Coordination and integration

Some of the important concepts whose questions are covered in NCERT Solutions for Class 11 Biology – Chemical Coordination and integration are:

• Endocrine glands and hormones
• Human endocrine system
• Role of hormones as messengers and regulators, hypo – and hyperactivity and related disorders
• Dwarfism , acromegaly, cretinism, goiter, exophthalmic goiter, diabetes, Addison’s disease.

CBSE Class 11 Biology Syllabus and Weightage

Study Guide Links:

CBSE CLASS XII Related Questions

1. what are transgenic bacteria illustrate using any one example., 2. draw a well-labelled diagram of an antibody molecule., 3. what do you think is the significance of reproductive health in a society, 4. distinguish between (a) grazing food chain and detritus food chain (b) production and decomposition (c) upright and inverted pyramid (d) food chain and food web (e) litter and detritus (f) primary and secondary productivity, 5. all algae have.

• chlorophyll a and b
• chlorophyll b and carotenoids
• chlorophyll a and carotenoids
• phycobilins and carotenoids

6. Does our blood have proteases and nucleases?

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AssignmentsBag.com

Assignments For Class 11 Biology

Assignments for Class 11 Biology have been developed for Standard 11 students based on the latest syllabus and textbooks applicable in CBSE, NCERT and KVS schools. Parents and students can download the full collection of class assignments for class 11 Biology from our website as we have provided all topic wise assignments free in PDF format which can be downloaded easily. Students are recommended to do these assignments daily by taking printouts and going through the questions and answers for Grade 11 Biology. You should try to do these test assignments on a daily basis so that you are able to understand the concepts and details of each chapter in your Biology book and get good marks in class 11 exams.

Unit 1: Diversity in the Living World

Unit 2: Structural Organisation in Plants and Animals    

Unit 3: Cell- Structure and Functions     

Unit 4: Plant Physiology

Unit 5: Human Physiology

Assignments for Class 11 Biology as per CBSE NCERT pattern

All students studying in Grade 11 Biology should download the assignments provided here and use them for their daily routine practice. This will help them to get better grades in Biology exam for standard 11. We have made sure that all topics given in your textbook for Biology which is suggested in Class 11 have been covered ad we have made assignments and test papers for all topics which your teacher has been teaching in your class. All chapter wise assignments have been made by our teachers after full research of each important topic in the textbooks so that you have enough questions and their solutions to help them practice so that they are able to get full practice and understanding of all important topics. Our teachers at https://www.assignmentsbag.com have made sure that all test papers have been designed as per CBSE, NCERT and KVS syllabus and examination pattern. These question banks have been recommended in various schools and have supported many students to practice and further enhance their scores in school and have also assisted them to appear in other school level tests and examinations. Its easy to take print of thee assignments as all are available in PDF format.

Some advantages of Free Assignments for Class 11 Biology

• Solving Assignments for Biology Class 11 helps to further enhance understanding of the topics given in your text book which will help you to get better marks
• By solving one assignments given in your class by Biology teacher for class 11 will help you to keep in touch with the topic thus reducing dependence on last minute studies
• You will be able to understand the type of questions which are expected in your Biology class test
• You will be able to revise all topics given in the ebook for Class 11 Biology as all questions have been provided in the question banks
• NCERT Class 11 Biology Workbooks will surely help you to make your concepts stronger and better than anyone else in your class.
• Parents will be able to take print out of the assignments and give to their child easily.

All free Printable practice assignments are in PDF single lick download format and have been prepared by Class 11 Biology teachers after full study of all topics which have been given in each chapter so that the students are able to take complete benefit from the worksheets. The Chapter wise question bank and revision assignments can be accessed free and anywhere. Go ahead and click on the links above to download free CBSE Class 11 Biology Assignments PDF.

Free PDF download of Biology Assignment for Class 11 with answers created by master educators from the latest syllabus of CBSE Boards. By practicing this Biology Assignment for Class 11 will help you to score more marks in your CBSE Board Examinations. We also give free NCERT Solutions and other study materials for students to make their preparation better.

Students who are searching for better solutions can download the Biology Assignment for Class 11 with answers to assist you with revising the whole syllabus and score higher marks in your exam.

This Biology Assignment for Class 11 with answers shows up with an answer key with step-by-step answers for students to comprehend the problem at each level and ​not retain it.

You can download free assignments for class 11 Biology from https://www.assignmentsbag.com

You can get free PDF downloadable assignments for Grade 11 Biology from our website which has been developed by teachers after doing extensive research in each topic.

On our website we have provided assignments for all subjects in Grade 11, all topic wise test sheets have been provided in a logical manner so that you can scroll through the topics and download the worksheet that you want.

You can easily get question banks, topic wise notes and questions and other useful study material from https://www.assignmentsbag.com without any charge

Yes all test papers for Biology Class 11 are available for free, no charge has been put so that the students can benefit from it. And offcourse all is available for download in PDF format and with a single click you can download all assignments.

https://www.assignmentsbag.com is the best portal to download all assignments for all classes without any charges.

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Assignment for Class 11 Biology

Download free PDF assignment for CBSE NCERT Class 11 Biology with chapter-wise and topic-wise important Numerical Questions and MCQs based on the latest syllabus and textbooks of CBSE NCERT. These assignments are designed for helping students to understand various topics, practice skills and improve their subject knowledge which in turn helps students to improve their academic performance.

Assignment for Class 11 free PDF Download

We have proved large number of Assignments for Numerical Questions and MCQs of every chapter for class 11 Biology. By Practicing these assignments will help you in concept clarification and enhance your problem solving skill. These question will help in subjective and well as objective approach of solving questions as latest pattern of CBSE includes Theory based as well as MCQ based questions.

Advantages of CBSE Class 11 Biology Worksheets

• By practising  NCERT CBSE  Class 11 Biology Worksheet , students can improve their problem solving skills.
• Helps to develop the subject knowledge in a simple, fun and interactive way.
• No need for tuition or attend extra classes if students practise on worksheets daily.
• Working on CBSE worksheets are time-saving.
• Helps students to promote hands-on learning.
• One of the helpful resources used in classroom revision.
• CBSE Class 11 Biology Workbook  Helps to improve subject-knowledge.
• CBSE Class 11 Biology Worksheets encourages classroom activities.

Assignment Class 8 Science

Assignment Class 9 Science

Assignment Class 10 Science

Assignment Class 11 Physics

Assignment Class 11 Chemistry

Assignment Class 11 Biology

Assignment Class 12 Physics

Assignment Class 12 Chemistry

Assignment Class 12 Biology

Mathematics Assignments

Assignment Class 8 Math

Assignment Class 9 Math

Assignment Class 10 Math

Assignment Class 11 Math

Assignment Class 12 Math

Chapter 1: The Living World

MCQ for Class 11 Biology The Living World set A

MCQ for Class 11 Biology The Living World set B

MCQ for Class 11 Biology The Living World set C

Chapter 2: Biological Classification

MCQ for Class 11 Biology Biological Classification set A

MCQ for Class 11 Biology Biological Classification set B

Chapter 3: Plant Kingdom

MCQ for Class 11 Biology Plant Kingdom set A

MCQ for Class 11 Biology Plant Kingdom set B

Chapter 4: Animal Kingdom

MCQ for Class 11 Biology Animal Kingdom

Chapter 5: Morphology of Flowering plants

MCQ for Class 11 Biology Morphology of Flowering Plants

Chapter 6: Anatomy of Flowering Plants

MCQ for Class 11 Biology Anatomy of Flowering Plants 1

MCQ for Class 11 Biology Anatomy of Flowering Plants 2

Chapter 7: Structural Organisation in Animals 

MCQ for Class 11 Biology Structural Organisation in Animals 1

MCQ for Class 11 Biology Structural Organisation in Animals 2

Chapter 8: Cell The Unit of Life

MCQ for Class 11 Biology Cell: The Unit of Life set A

MCQ for Class 11 Biology Cell: The Unit of Life set B

Chapter 9: Biomolecules

MCQ for Class 11 Biology Biomolecules Set A

MCQ for Class 11 Biology Biomolecules Set B

Chapter 10: Cell Cycle and Cell Division

MCQ for Class 11 Biology Cell Cycle and Cell Division Set A

MCQ for Class 11 Biology Cell Cycle and Cell Division Set B

Chapter 11: Transport in Plants

MCQ for Class 11 Biology Transport in Plants Set A

MCQ for Class 11 Biology Transport in Plants Set B

Chapter 12: Mineral Nutrition

MCQ for Class 11 Biology Mineral and Nutrition Set A

MCQ for Class 11 Biology Mineral and Nutrition Set B

1.The Living World

Assignment for class 11 Biology The Living World

2.Biological Classification

Assignment for class 11 Biology Biological Classification

3.Plant Kingdom

Assignment for class 11 Biology Plant Kingdom 1

Assignment for class 11 Biology Plant Kingdom 2

4.Animal Kingdom

Assignment for Class 11 Biology- Animal Kingdom

5. Morphology of flowering Plants

Assignment for Class 11 Biology- Morphology of Flowering Plants 1

Assignment for Class 11 Biology- Morphology of Flowering Plants 2

6. Anatomy of Flowering Plants

Assignment for Class 11 Biology-Anatomy in Flowering Plants 1

Assignment for Class 11 Biology-Anatomy in Flowering Plants 2

7. Structural Organisation in Animals

Assignment for Class 11 Biology-Structural Organisation in Animals 1

Assignment for Class 11 Biology-Structural Organisation in Animals 2

8. Cell : The Unit of Life

Assignment for Class 11 Biology-Cell The unit of Life

9. Biomolecules

Assignment for Class 11 Biology Biomolecules

10. Cell Cycle and Cell Division

Assignment for Class 11 Biology Cell Cycle and Cell Division A

Assignment for Class 11 Biology Cell Cycle and Cell Division B

11. Transport in Plants

Assignment for Class 11 Biology Transport in Plants

12. Mineral Nutrition

Assignment for Class 11 Biology Mineral Nutrition

13. Photosynthesis in Higher Plants

Assignment for Class 11 Biology Photosynthesis in Higher Plants

14. Respiration in Plants

Assignment for Class 11 Biology Respiration in Plants A

Assignment for Class 11 Biology Respiration in Plants B

15. Plant Growth and Development

Assignment for Class 11 Biology Plant Growth and Development A

Assignment for Class 11 Biology Plant Growth and Development B

16. Digestion and Absorption

Assignment for Class 11 Biology Digestion and Absorption A

Assignment for Class 11 Biology Digestion and Absorption B

Assignment for Class 11 Biology Digestion and Absorption C

17. Breathing and Exchange of Gases

Assignment for Class 11 Biology Breathing and Exchange of Gases

Worksheets of CBSE Class 11 Biology are devised by experts of Prerna Education experts who have great experience and expertise in teaching Biology . So practising these worksheets will promote students problem-solving skills and subject knowledge in an interactive method. Students can also download CBSE Class 11 Physics Chapter wise question bank pdf and access it anytime, anywhere for free. Browse further to download free CBSE Class 11 Biology Worksheets PDF .

Now that you are provided all the necessary information regarding CBSE Class 11 Biology Worksheet and we hope this detailed article is helpful. So Students who are preparing for the exams must need to have great solving skills. And in order to have these skills, one must practice enough of Class 11 Biology revision worksheets . And more importantly, students should need to follow through the worksheets after completing their syllabus. Working on CBSE Class 11 Biology Worksheets will be a great help to secure good marks in the examination. So start working on Class 11 Biology Worksheets to secure good score.

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• Biology Important Questions
• Class 11 - Biology
• Chapter 1: Living World

Important Questions for Class 11 Biology- The Living World

There are a large variety of organisms around us. A few can be seen with the naked eye, while a few can’t. The different kinds of plants, animals, and microorganisms make up the biodiversity. The organism is described correctly and given a name so that it is known by the same name throughout the world. Each name is divided into a generic name and a specific name.

Very Short Answer Type Questions

Q.1. Name three botanists who contributed to the field of plant taxonomy.

A.1. The three botanists are:

• Carolus Linnaeus
• Joseph Dalton Hooker

Also read: Taxonomy

Q.2. Expand ICZN? (Clue: The organization that dictates the correct use of the scientific names of animals)

A.2. International Commission on Zoological Nomenclature

Q.3. What is a couplet in the taxonomic key?

A.3. A couplet in the taxonomic key is dichotomous.

Q.4. Define a monograph.

A.4. A monograph is the writing work of a specialist on a single scholarly subject or an aspect of a subject. It is often written by a single author.

Q.5. Define metabolism.

A.5. Metabolism is the process of conversion of food into energy by a series of chemical reactions.

Q.6. The mitotic cell division in amoeba represents growth or reproduction?

A.6. The phenomenon represents  reproduction .

Q.7. Name a few botanical gardens in India. Also, name the largest botanical garden in the world.

A.7. Kew Royal Garden in London is the largest botanical garden in the world. Botanical gardens in India are:

• Indian Botanical Garde, Kolkata
• Lalbagh Botanical Garden, Bangalore
• Government Botanical garden, Ooty
• National Botanical Garden, Lucknow
• Assam State Botanical Garden, Guwahati

Q.8. If a habitat contains 20 animal species and 20 plant species, is it “diversity” or “biodiversity”?

A.8. This represents the  biodiversity of a given habitat. This is because biodiversity refers to the variation of life forms in a specified area.

Q.9. Identify the correctly written scientific name for mango species- Mangifera indica/Mangifera Indica.

A.9. Mangifera indica.

Q.10. Match the correct pairs.

A.10. Family- Solanaceae Kingdom- Plantae Order- Polymoniales Species- Tuberosum Genus- Solanum

Q.11. What is the lowest category of classification?

A.11.  Species is the lowest category of classification.

Also read: Species

Q.12.What are the Taxonomic keys?

A.12.  The Taxonomic keys are aids that assist in the identification of any organism in view of its attributes.

Q.13.Who is known as the Father of Taxonomy?

A.13.  Carl Linnaeus is called the Father of Taxonomy.

Q.14. What are the 8 levels of taxonomy?

A.14.  According to the modern taxonomic classification system the eight main levels of taxonomy are:

Domain, Kingdom, Phylum, Class, Order, Family, Genus, Species.

Q.15.What is Taxonomy?

A.15.  Taxonomy is the process of classifying and nomenclature of all living things including into different groups according to their similarities and differences.

Q.16. What is Reproduction?

A.16. Reproduction is the process of producing offspring that are biologically or genetically similar to the parent organism.

Q.17. List out the building blocks of life?

A.17. The essential building blocks of life include – carbohydrates, lipids, proteins and nucleic acids.

Q.18. What is Biology?

A.18. Biology is a natural science, which is concerned with the study of principles of governing life processes and also explores the living world, diversity of living organisms, relationships between the living and nonliving, and a lot more.

Q.19. What is Biodiversity?

A.19. Biodiversity can be defined as the variation among living organisms from different sources, including terrestrial, marine and desert ecosystems, and other ecological complexes.

Q.20. What is DNA?

A.20. DNA – Deoxyribonucleic acid, is the double-helical structure, which contains the unique genetic code, which is inherited from our parents. It is found in every single living creature and is composed of molecules called nucleotides.

Q.21. What are Carbohydrates?

A.21. Carbohydrates are a group of organic molecules or the macromolecules, which are composed of carbon, hydrogen and oxygen atoms. These biomolecules are primary food groups and are an essential source of energy. The most common and abundant forms of Carbohydrates are sugars, fibres, and starches.

Q.22. What is Cellular organization?

A.22  The cellular organization is defined as the components that make up the cell, tissues, organs and the organ system.

Short Answer Type Questions

Q.1. What are the units of classification followed by Botanists while classifying plants?

Q.2. Define the following:

Phylum – This category is higher than class. It consists of one or more related classes with common characteristics.

Class – This category is higher than the order. It consists of one or more related orders with common features.

Order – It consists of one or more related families having some common characteristics.

Genus – It ranks higher than the species and includes one or more species closely related to each other.

Q.3. State the differences between flora, fauna, and vegetation. A.3.

Also read: Flora and Fauna

Q.4. What do you mean by endemic and exotic species? Give examples for each.

A.4. Exotic species – Any species of a living organism living in a place other than its native place are known as exotic species. For eg; Eichhornia crassipes is the native of the Amazon basin but was introduced in India, so it is an exotic species to India.

Endemic species- These are the species found only in a particular area. For eg; Rauwolfia is an endemic species found only in India.

Q.5. The number and kind of organisms are not constant. Explain.

A.5. The number and kind of organisms are not constant because:

• Sexual reproduction
• Loss of habitats
• Environmental threats
• Anthropogenic activities

Q.6. Brinjal and potato belong to the same genus but different species. What separates the two species?

A.6. They belong to different species because:

• They cannot interbreed
• They have different morphological features.

Q.7. What is taxon? Give a few examples.

A.7. A taxon is a group of organisms of any level in the hierarchical classification based on some common characteristics. For eg; all the insects are classified under one phylum-Arthropoda. A taxa includes-kingdom, phylum, class, order, family, genus.

Q.8. A person living in a coma is considered living or dead?

A.8. A person on coma is considered to be a living dead. This is because a person in a coma is unconscious for more than six hours. He even doesn’t respond to any form of stimuli such as pain, light and sound. Such a person is brain dead.

Also Read:  Suspended Animation

Q.9. What are the different defining properties of a living organism?

A living organism can grow.

All living organisms can reproduce.

Metabolism is another defining property of a living organism.

Cellular organization of living organisms.

Consciousness

Q.10. What is biodiversity?

A.10. Biodiversity is the variations among living organisms, from minute microorganisms to the multicellular plants, and animals. It includes genetic diversity, species diversity, and ecosystem diversity.

Q.11. What is ICBN?

A.11. The ICBN – International Code of Botanical Nomenclature is the set of rules used during the nomenclature of plants and are mainly based on international rules. These rules were proposed by the Swedish botanist and zoologist Carl Linnaeus .

Q.12. W hat are the Building blocks of the living system?

A.12.  The  basic building blocks of the living system includes both the organic and  inorganic biomolecules and they include:

• Nucleic Acids.
• Carbohydrates.
• Sodium chloride.

Q.13.Write the full form for the following code – ICVN, ICBN, ICZN, ICNB. 

ICVN– The International Code of Viral Nomenclature.

ICBN– The International Code of Botanical Nomenclature.

 ICZN–  The International Commission on Zoological Nomenclature.

 ICNB–  The Institute for Nature Conservation and Biodiversity.

Q.14.Define the following terms- Metabolism, Growth and Development.

Metabolism– It refers to a series of chemical reactions, which takes place in all living organisms to sustain life.

Growth– It is defined as an irreversible and constant increase in the mass and size of a body.

Development– It is the process, where a particular organism grows physically and acquires both the mental and physiological growth as well.

Q.15. What is binomial nomenclature?

A.15. Binomial nomenclature is a formal and biological system of naming all the living organisms. Carolus Linnaeus was the first person to introduce the binomial nomenclature system for naming organisms in a scientific way.

Long Answer Questions

Q.1. What do you mean by living? Explain the defining characteristics of living organisms.

A.1. Living means a thing that can grow, reproduce, has a cellular organization and is aware of its surroundings. Following are the defining characteristics of a living organism:

Growth – All living organisms have the ability to grow. Growth refers to the increase in the number and size of an organism.

Reproduction – All living organisms have the property of giving rise to a new individual. Reproduction can occur through sexual and/or asexual means.

Metabolism – All living organisms exhibit the process of metabolism. It is a series of chemical reactions which converts food into energy.

Cellular organization – Cell is the structural and functional unit of life. All living organisms are made up of one or more cells.

Q.2. With reference to Brassica compestris linn .

Give the common name of the plant

What do the first two words of the name indicate?

Why is the scientific name written in italics?

What does “linn.” mean?

The first part of the name (Brasicca) indicates the generic name, while the second part (compestris) indicates the species name.

The names are written in italics because it is the rule of the binomial nomenclature.

“Linn” means Linnaeus, the first scientist to discover the plant.

Q.3. Differentiate between “whole moong daal” and “broken moong daal” in terms of respiration and growth?

Q.4. How will a scientist go about the identification, nomenclature and classification of a plant which he feels is a new species?

A.4. The taxonomic keys, monographs, herbaria, and preserved plant specimen help in discovering a new plant species. The morphological and anatomical structures of the plant are studied and its characteristic features are compared with the similar information available in the scientific literature. The systematic position of the plant is then decided and it is named according to the rules of binomial nomenclature.

Q.5. What is Reproduction?

A.5.  Reproduction is a common characteristic of Living Things. In general terms, reproduction is defined as the biological process of giving birth to their young oned identical to their parents.

There are two different types of reproduction –

• Sexual Reproduction
• Asexual Reproduction.

These two modes of reproduction are differentiated mainly based on the number of parents involved.

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Practice Questions For Class 11 Biology Chapter 1 Living World

• What are the three codes of nomenclatures?
• Properties of cell organelles are not always found in the molecular constituents of cell organelles. Justify.
• What is Binomial system of nomenclature? Who proposed this system? Why is binomial nomenclature the most acceptable mode of naming organism?
• Match the following:

More to Read:

• Important Questions for Biology Class 11
• Important Questions for Biology Class 12

Also Access  Class 11 Biology Sample papers  

Other Interesting Topics:

• Biological Classification
• Plant Kingdom
• Bioluminescence
• Flight Adaptations

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