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NCERT Syllabus for Class 11 Biology 2025-26 - Download All Subject PDF

NCERT Syllabus for Class 11 Biology 2025-26 - Download All Subject PDF

Edited By Irshad Anwar | Updated on May 19, 2025 10:11 PM IST

Understanding the different processes of life, which include how organisms work, function, and organize, is essential for students to grasp the basics of Biology. The NCERT Syllabus for Class 11 Biology lays out these basic concepts in a well-structured way. It helps students to learn the processes of life, plants, animals, and the human body, and prepares them for school exams and entrance examinations like NEET. NCERT Books are an excellent tool that not only helps in increasing marks but also increases the curiosity about the world and also for the subject.

Divided into 5 units, the NCERT Class 11 Biology syllabus covers all topics as per the CBSE Board, including cell structure, plant physiology, and human physiology in a sequence and easy-to-understand form. Each chapter has detailed explanations, diagrams, and practical examples that make biological functions understandable. Regular practice and revision of the diagrams can also increases knowledge and retention. This way of learning proves helpful for those students who aim to pursue biology and medical sciences at higher levels.

This Story also Contains
  1. NCERT Syllabus for Class 11 Biology 2025-26 (Theory)
  2. CBSE Class 11 Biology Syllabus Prescribed Books
  3. NCERT Syllabus for Class 11 Biology 2025-26 (Practical Examination)
  4. Why is NCERT Class 11 Biology Important?
NCERT Syllabus for Class 11 Biology 2025-26 - Download All Subject PDF
NCERT Syllabus for Class 11 Biology 2025-26 - Download All Subject PDF

NCERT Syllabus for Class 11 Biology 2025-26 (Theory)

The following table provides a unit-wise breakdown of the theory part, which highlights all the chapters students have to study throughout the session.

Unit 1: Diversity in the Living World

Chapter 1: The Living World

  • What is living?

  • Biodiversity

  • Taxonomy and systematics

  • Concept of species

  • Taxonomical hierarchy

  • Tools for the study of taxonomy (museums, zoological parks, herbaria, botanical gardens, keys)

Background wave

Chapter 2: Biological Classification

  • Five-kingdom classification

  • Salient features of Monera, Protista, and Fungi

  • Lichens, Viruses, Viroids

Chapter 3: Plant Kingdom

  • Classification of plants

  • Algae, Bryophyta, Pteridophyta, Gymnosperms, Angiosperms

  • Salient features and examples

Chapter 4: Animal Kingdom

  • Classification of animals

  • Non-chordates up to the phylum level

  • Chordates up to the class level

  • Salient features and examples

Unit 2: Structural Organisation in Plants and Animals

Chapter 5: Morphology of Flowering Plants

  • Root, stem, leaf, inflorescence, flower, fruit, seed morphology

  • Family Solanaceae description

Chapter 6: Anatomy of Flowering Plants

  • Tissue systems in dicots and monocots

  • Anatomy and functions

Chapter 7: Structural Organisation in Animals

  • Morphology and anatomy of the digestive, circulatory, respiratory, nervous, and reproductive systems of the frog

Unit 3: Cell: Structure and Function

Chapter 8: Cell: The Unit of Life

  • Cell theory

  • Prokaryotic and eukaryotic cells

  • Cell organelles and their functions

  • Ultrastructure of organelles

Chapter 9: Biomolecules

  • Chemical constituents of cells

  • Structure and function of proteins, carbohydrates, lipids, and nucleic acids

  • Enzymes and action

Chapter 10: Cell Cycle and Cell Division

  • Cell cycle phases

  • Mitosis and meiosis

  • Significance of cell division

Unit 4: Plant Physiology

Chapter 11: Photosynthesis in Higher Plants

  • Photosynthesis process

  • Light and dark reactions

  • Factors affecting photosynthesis

Chapter 12: Respiration in Plants

  • Aerobic and anaerobic respiration

  • Glycolysis, Krebs cycle, electron transport chain

Chapter 13: Plant Growth and Development

  • Growth phases

  • Plant hormones and their functions

  • Seed dormancy and germination

Unit 5: Human Physiology

Chapter 14: Breathing and Exchange of Gases

  • Human respiratory system

  • Mechanism of breathing

  • Transport of gases

Chapter 15: Body Fluids and Circulation

  • Blood composition and functions

  • Circulatory system in humans and frogs

Chapter 16: Excretory Products and their Elimination

  • Human excretory system

  • Urine formation

  • Osmoregulation

Chapter 17: Locomotion and Movement

  • Human skeletal and muscular system

  • Types of muscles

  • Movement mechanism

Chapter 18: Neural Control and Coordination

  • Nervous system

  • Neuron structure and function

  • Reflex action

Chapter 19: Chemical Coordination and Integration

  • Endocrine glands and hormones

  • Functions and disorders

Download: NCERT 11th Class Biology Syllabus PDF

CBSE Class 11 Biology Syllabus Prescribed Books

CBSE prescribes the NCERT Books for every subject. CBSE prescribed the “Biology Class-XI, Published by NCERT” book to cover the 11th class Biology syllabus. Apart from this, Candidates should also read other reference books to gain additional information which is listed below:

  • Trueman’s Biology (Volume 1 & 2) – By K.N. Bhatia and M.P. Tyagi

  • Pradeep’s A Textbook of Biology – By P.S. Dhami

  • Dinesh Objective Biology – By Ashish Sarabhai

  • Biology by Arihant Experts

NCERT Syllabus for Class 11 Biology 2025-26 (Practical Examination)

CBSE also conducts a practical examination of 30 marks for 3 hours. NCERT devised the CBSE class 11 Biology Syllabus for practical exams which are explained below:

Practical Evaluation Scheme

Particular

Marks assigned

One Major Experiment Part A (Experiment No 1,3,7,8)

5

One Minor Experiment Part A (Experiment No 6,9,10,11,12,13)

4

Slide Preparation Part A (Experiment No 2,4,5)

5

Spotting Part B

7

Practical Record + Viva Voce

4

Project Record + Viva Voce

5

Total

30

CBSE Class 11th Biology -List of Experiments

1585542709366

Also read,

Why is NCERT Class 11 Biology Important?

  • Foundation for Class 12 & Competitive Exams – What is taught in Class 11 is helpful for Class 12, NEET, and other entrance exams.
  • Conceptual Learning – Facilitates learning actual biological processes such as digestion, respiration, and reproduction.
  • Scoring Subject – With proper preparation, students can score well in Biology because it has direct questions and diagrams.

NCERT Class 11 Syllabus and Books


Frequently Asked Questions (FAQs)

1. What are the main units covered in Class 11 Biology NCERT syllabus?

The Class 11 Biology NCERT syllabus is divided into five units:

  • Diversity of Living Organisms

  • Structural Organisation in Animals and Plants

  • Cell Structure and Function

  • Plant Physiology

  • Human Physiology

2. How many chapters are there in the NCERT Class 11 Biology textbook?

There are a total of 19 chapters, which are included in the NCERT Class 11 Biology textbook, organized into 5 units.

3. Does the Class 11 Biology syllabus include practical experiments?

Yes, the Class 11 Biology syllabus includes practical experiments as part of the curriculum. These practicals help students understand biological concepts such as:

  • Studying plant and animal specimens
  • Using microscopes to observe cells and tissues
  • Performing experiments related to osmosis, plasmolysis, and food tests
  • Preparing temporary slides
  • Recording and analyzing data
4. What topics are covered under the unit “Diversity of the Living Organisms”?

The unit “Diversity of Living Organisms” in Class 11 Biology covers the following main topics:

  • Introduction to the characteristics of living organisms
  • The concept and importance of taxonomy and classification
  • The five-kingdom classification system
  • Major groups and features of the Plant Kingdom
  • Major groups and features of the Animal Kingdom
5. Are genetics topics included in the Class 11 Biology syllabus or only in Class 12?

Genetics topics are mainly included in the Class 12 Biology syllabus, not in the NCERT Syllabus for Class 11 Biology.

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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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