Class 11 Biology - NCERT Solutions 2024-25, Download PDF

Class 11 Biology - NCERT Solutions 2024-25, Download PDF

Edited By Irshad Anwar | Updated on May 16, 2024 05:24 PM IST

NCERT Solutions Class 11 Biology (Chapter-wise) - Download Free PDFs

NCERT Solutions for Class 11 Biology chapter 1 to 22 are available for the students who are going to appear in their Class 11th exams. The solutions for Class 11 Biology will be beneficial, as they will enhance your marks as well as your knowledge. Biology is considered to be one of the most puzzling and dynamic subjects, as the units of study in CBSE Class 11 biology are living organisms. Biology Class 11 NCERT Solutions have been updated to the latest CBSE Syllabus. Even if you are planning to appear for medical entrance exams like NEET, a study of NCERT Solutions (Class-wise) will improve your marks in the exam. A thorough strategy, backed by extensive and in-depth learning of concepts, is your best bet for acing the board exams. Students can use these solutions to find the answers to every question in the NCERT textbook.

Biology is referred to as the study of various life forms existing on Earth. Studying the questions in the Biology NCERT Solutions for Class 11, will make you familiar with the fundamental studies of living organisms. The syllabus of CBSE Class 11th Biology mainly includes the details of the structures and functions of various components of the bodies of plants and humans in units like structural organisation in plants and animals, plant physiology, and human physiology. Class 11 Biology NCERT Solutions are present in PDF format to download and use offline. We, at careers360 provide Chapter-wise NCERT Solutions for Class 11 biology.

Biology NCERT Solutions Class 11 Chapter-wise

Find the chapter-wise Class 11 Biology Solutions below:

The following chapters from the NCERT Class 11 Biology textbook (2023–2024) have been deleted.

NCERT Solutions for Class 11 Biology: Chapter Details

The Class 11 NCERT Textbook of Biology includes a total of 22 chapters segregated into 5 units, namely, diversity in the living world, structural organization in plants and animals, cell structure and function, plant physiology and human physiology. In order to ace the Class 11 Biology Exam, an important prerequisite is knowing the solutions for NCERT Class 11 biology Chapters. So every student must have CBSE NCERT solutions for class 11 biology in hand ready for the better preparation of CBSE exam and the important thing is your understanding of concepts of biology chapters will improve and you will be able to perform better in exams. Hereunder, a brief analysis of all the 16 chapters of NCERT Biology Class 11 there. Before starting preparation, you must go through this brief introduction given for Class 11 Biology NCERT Chapters. You will find the Class 11 Biology Questions and Answers for each chapter.

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Chapter 1: The Living World

Chapter 1 of NCERT textbook class 11 biology is the living world. This chapter mainly deals with the ideas of what are living beings and what are the characteristics of living beings. In this chapter, you will also get to learn about how taxonomic studies are carried out with the help of taxonomic aids. You will also learn the process of growth of the organism. At the end of the chapter, the NCERT exercise is given which consists of a total of 18 questions. After reading the chapter, you must try NCERT exercise and get correct NCERT solutions for class 11 biology.

Chapter 2: Biological Classification

NCERT biology chapter 2 Biological classification compiles the information of various classification systems. It deals with the characteristics of the kingdom monera, protista, fungi, and short introduction to kingdom Plantae and Animalia. In this chapter, you will also study viruses. This chapter includes a total of 6 subtopics and 12 exercise questions. In order to excel in the exam and for your better understanding, you must have correct solutions for NCERT class 11 biology and keep practicing with those questions.

Chapter 3: Plant Kingdom

This chapter deals with all the characteristics of members of the plant kingdom and the classification of plants. This chapter will give you brief details of algae, bryophytes, pteridophytes, gymnosperms and angiosperms. You will also study the life cycle of plants and the alteration of its generation. In this chapter, there is a total of six sub-topics, based on which 12 questions are given at the end of the chapter. You must practice those questions while preparing for your exam.

Chapter 4: animal kingdom

This chapter deals with the classification of the animal kingdom into groups and sub-groups. This chapter will make you familiar with the peculiar features of each group of the animal kingdom. The chapter includes a total of 2 topics from which 15 questions have been asked for the understanding of the chapter. Since this chapter is mostly memory based, try to learn it by making notes and practising. Solutions for NCERT Biology Class 11 will be beneficial for understanding the concepts of this chapter.

Chapter 5: Morphology of Flowering Plants

Chapter 5 of class 11 NCERT textbook is on the morphology of flowering plants. This chapter compiles information regarding the external features of a plant. In this chapter, you will study the structural details of the flowering plant, like its root, stem, leaf, flower, fruits, seeds and appearance. This chapter is important from the exam point of view. So, you need to prepare it very well. You can note down the important features of Class 11 Biology NCERT Chapters and then learn them one by one. Also, practice the NCERT exercise for chapter 5 and take help from the solutions for NCERT class 11 biology.

Chapter 6: Anatomy of Flowering Plants

This chapter deals with tissues, different types of tissues, their systems, and dicotyledonous and monocotyledonous plants. The diagrams of dicots and monocots are the important ones. You will also include the details of secondary growth in plants. This also consists of a total of 4 topics with 12 questions to practice. For better preparation, solve the complete exercise mentioned at the end of NCERT class 11 biology by understanding all the concepts.

Chapter 7: Structural Organisation in Animals

Chapter 7 of class 11 biology includes details about the various kinds of animal tissues, organ, organ systems, and their organization. This chapter will also give a brief description of earthworm, cockroach and frogs. This chapter consists of a total of 5 topics with 14 questions in the NCERT exercise. This chapter includes many different diagrams so practice each one of them in order to understand the concepts. Once you are done with chapter reading, go for NCERT exercise and practice the CBSE NCERT solutions for Class 11 Biology.

Chapter 8: Cell The Unit of Life

This is chapter 8 of NCERT textbook class 11 Cell structure and function compiles the information regarding the basic structural and functional unit of organisms i.e. cell. In this chapter, you will get to know the insights of a cell, what structures are present in cells and what roles they play. In the end, a total of 14 questions are given to test your understanding. After reading the chapter you must go through the NCERT exercise of class 11 biology and try to understand the NCERT solutions for class 11 biology.

Chapter 9: Biomolecules

his chapter deals with the biological molecules found in a cell. It also includes details of various kinds of enzymes and their properties. This chapter will also give you the knowledge of biomacromolecules, proteins, polysaccharides, nucleic acids and also the structures of different proteins. It requires conceptual knowledge so try to understand the basics of this chapter and solve the NCERT exercise. It's important if you want to score good marks.

Chapter 10: Cell Cycle and Cell Division

In chapter 10 Cell cycle and cell division, you will find details of the process of cell division. You will also get to learn about the checkpoints that decide the fate of a cell. This chapter will tell the different phases of cell division that is mitosis and meiosis. You will also study the significance of the meiosis. It is one the important chapter of biology class 11. Practice each question from the NCERT exercise after going through the chapter line by line.

Chapter 11: Transport in Plants

Chapter 11 Transport in plants is a compilation of various aspects of the process of transport in plants. The study of this chapter will help you in understanding the insights of this process and make you familiar with how water reaches up to the top of big trees. To ace the questions of this chapter you need to understand the concepts well. It includes a total of 6 topics from which 16 questions have been asked to test your knowledge. Try Class 11 Biology Questions and Answers of the exercise once you are done with the chapter study. Correct solutions for NCERT class 11 biology will help you in getting good marks in your exams.

Chapter 12: Mineral Nutrition

Mineral nutrition is a chapter dealing with the importance of different types of minerals and nutrients in a plants life cycle. This chapter will tell you the different methods and absorption of minerals and also study the metabolism of nitrogen. NCERT Class 11 biology chapter 12 mineral nutrition consists of a total of 6 topics from which 10 questions have been asked. Try all the NCERT questions and you can also take help from the NCERT solutions.

Chapter 13: Photosynthesis in Higher Plants

Chapter 13 of the class 11 biology NCERT textbook is a compilation of various aspects of the universal process called photosynthesis. It also includes details about the factors that affect photosynthesis. Read the chapter thoroughly and try all the questions of NCERT exercise. There are a total of 10 topics in the chapter while 9 questions have been asked in the NCERT exercise. Attempt NCERT exercise and correct CBSE NCERT solutions for class 11 biology will help you to gain more marks in the CBSE exams.

Chapter 14: Respiration in Plants

NCERT textbook chapter 14 respiration in plants provides you with insights of the process of respiration in plants. In this, you will also study glycolysis and different pathways of respiration. It consists of a total of 6 topics based on which 12 questions are given at the back of the NCERT Textbook class 11 biology. Attempt each and every question of NCERT exercise and if you need any help then, you can take help from NCERT solutions.

Chapter 15: Plant Growth and Development

This chapter compiles the information on various kinds of plant growth regulators that functions to regulate different physiological processes in plants. This also consists of a total of 7 topics from which 11 questions have been asked. After chapter reading, go through the NCERT exercise and try to solve each every and question by yourself. In case of difficulties, you can refer to NCERT solutions for class 11 biology.

Chapter 16: Digestion and Absorption

This chapter compiles the insights of the digestive system in humans and the process of digestion. You will also learn about the various kinds of disorders of the digestive system. This also consists of a total of 4 topics and 15 questions in the exercise. Try each and every question of NCERT exercise so that you can keep your preparation on track. If you face any trouble in solving the questions, Class 11 Biology Solutions can help you.

Chapter 17: Breathing and Exchange of Gases

This chapter will make you familiar with the insights of the process of breathing and exchange of gases in humans. You will also get to learn about the various kinds of disorders of the respiratory system of humans. This chapter consists of a total of 6 topics based on which 14 questions have been asked in the NCERT exercise. Try each and every question of NCERT exercise as this will give strength to your preparation.

Chapter 18: Body Fluids and Circulation

This is an interesting chapter and it deals with the details of the circulatory system of humans. It also includes information about the process of transport through blood circulation. Chapter 18 body fluids and circulation consists of a total of 6 topics from which 14 questions have been asked. Try all the NCERT questions and write correct CBSE NCERT solutions for class 11 biology to understand chapter 18 body fluids and circulation.

Chapter 19: Excretory Products and Their Elimination

This chapter includes the insights of the process of excretion and osmoregulation. In this chapter, you will get to learn about the excretory system of humans. This also consists of a total of 8 topics from which 12 questions have been asked. Attempt all the questions and understand the solutions for NCERT class 11 biology to gain more marks in chapter 19 excretory products and their elimination.

Chapter 20 Locomotion and Movement

This deals with the structural details of different types of bones and joints in humans. It also talks about the skeletal system of humans and how movements occur in humans. This chapter consists of a total of 5 topics with 10 questions to practice. For better preparation, solve the exercise and write correct NCERT solutions for Class 11 Biology to understand chapter 19 locomotion and movement in a better way.

Chapter 21 Neural Control and Coordination

Chapter 21 of Biology NCERT textbook is neural control and coordination, this chapter deals with the details of the nervous system of humans. It also talks about the specialized nerve cells called neurons. This chapter consists of a total of 6 topics and 12 questions which has to be solved. For acing the exam this chapter is important and the CBSE NCERT solutions for class 11 biology will be beneficial for chapter 21 neural control and coordination.

Chapter 22: Chemical Coordination and Integration

Biology class 11 chapter 22 Chemical coordination and integration deals with the various different hormones found in the human body and it also talks about how these hormones perform their functions. The chapter includes a total of 4 topics from which 9 questions have been asked for the understanding of the chapter. Since this chapter is mostly memory based try to learn it by making notes and practising. Solutions for NCERT Class 11 Biology will be beneficial for understanding the concepts of this chapter.

NCERT Solutions for Class 11: Subject-wise

Highlights of Biology NCERT Solutions Class 11

Key features of Biology Class 11 NCERT Solutions are given below:

  • Solutions for Class 11 Biology Chapters are written in the best possible way, using simple language that makes solutions easier to read and understand. The solution content for Biology Book Class 11 is derived from the textbook by the subject expert.
  • In the Solution for NCERT 11 biology, points are used to frame answers to help students understand them quickly.
  • Solutions for 11th biology are as per the latest CBSE Syllabus and guidelines.
  • You will gain an edge in your preparation for NEET and other medical entrance exams.
  • Solution PDF links for the NCERT Biology Book Class 11 are readily available and easily accessible for free.
  • Bio NCERT Class 11 is a great resource for information.
  • Class 11 Biology All Chapter names with solutions are given in the table, which is easier to access and download in PDF.
  • Solutions for 11th bio NCERT are Jargon-free and class 11 biology questions and answers are in easy-to-understand language.

Also, check NCERT Notes Subject Wise

Frequently Asked Questions (FAQs)

1. What are the benefits of NCERT solutions for class 11 biology?
  • You will be benefitted in the medical entrance examination like NEET.   
  • You will gain good marks in your exam by using solutions for NCERT Class 11 Biology.   
  • Your grip on every concept will become stronger.   
  • Solutions are easy to understand and also easy to remember.   
  • You will be also benefitted in the CBSE exams by using NCERT solutions for class 11 biology as most of the questions come from NCERT.   
  • You will find yourself more confident and you will be able to solve mock test papers for biology class 11 exams.  

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A block of mass 0.50 kg is moving with a speed of 2.00 ms-1 on a smooth surface. It strikes another mass of 1.00 kg and then they move together as a single body. The energy loss during the collision is

Option 1)

0.34\; J

Option 2)

0.16\; J

Option 3)

1.00\; J

Option 4)

0.67\; J

A person trying to lose weight by burning fat lifts a mass of 10 kg upto a height of 1 m 1000 times.  Assume that the potential energy lost each time he lowers the mass is dissipated.  How much fat will he use up considering the work done only when the weight is lifted up ?  Fat supplies 3.8×107 J of energy per kg which is converted to mechanical energy with a 20% efficiency rate.  Take g = 9.8 ms−2 :

Option 1)

2.45×10−3 kg

Option 2)

 6.45×10−3 kg

Option 3)

 9.89×10−3 kg

Option 4)

12.89×10−3 kg

 

An athlete in the olympic games covers a distance of 100 m in 10 s. His kinetic energy can be estimated to be in the range

Option 1)

2,000 \; J - 5,000\; J

Option 2)

200 \, \, J - 500 \, \, J

Option 3)

2\times 10^{5}J-3\times 10^{5}J

Option 4)

20,000 \, \, J - 50,000 \, \, J

A particle is projected at 600   to the horizontal with a kinetic energy K. The kinetic energy at the highest point

Option 1)

K/2\,

Option 2)

\; K\;

Option 3)

zero\;

Option 4)

K/4

In the reaction,

2Al_{(s)}+6HCL_{(aq)}\rightarrow 2Al^{3+}\, _{(aq)}+6Cl^{-}\, _{(aq)}+3H_{2(g)}

Option 1)

11.2\, L\, H_{2(g)}  at STP  is produced for every mole HCL_{(aq)}  consumed

Option 2)

6L\, HCl_{(aq)}  is consumed for ever 3L\, H_{2(g)}      produced

Option 3)

33.6 L\, H_{2(g)} is produced regardless of temperature and pressure for every mole Al that reacts

Option 4)

67.2\, L\, H_{2(g)} at STP is produced for every mole Al that reacts .

How many moles of magnesium phosphate, Mg_{3}(PO_{4})_{2} will contain 0.25 mole of oxygen atoms?

Option 1)

0.02

Option 2)

3.125 × 10-2

Option 3)

1.25 × 10-2

Option 4)

2.5 × 10-2

If we consider that 1/6, in place of 1/12, mass of carbon atom is taken to be the relative atomic mass unit, the mass of one mole of a substance will

Option 1)

decrease twice

Option 2)

increase two fold

Option 3)

remain unchanged

Option 4)

be a function of the molecular mass of the substance.

With increase of temperature, which of these changes?

Option 1)

Molality

Option 2)

Weight fraction of solute

Option 3)

Fraction of solute present in water

Option 4)

Mole fraction.

Number of atoms in 558.5 gram Fe (at. wt.of Fe = 55.85 g mol-1) is

Option 1)

twice that in 60 g carbon

Option 2)

6.023 × 1022

Option 3)

half that in 8 g He

Option 4)

558.5 × 6.023 × 1023

A pulley of radius 2 m is rotated about its axis by a force F = (20t - 5t2) newton (where t is measured in seconds) applied tangentially. If the moment of inertia of the pulley about its axis of rotation is 10 kg m2 , the number of rotations made by the pulley before its direction of motion if reversed, is

Option 1)

less than 3

Option 2)

more than 3 but less than 6

Option 3)

more than 6 but less than 9

Option 4)

more than 9

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