CBSE Class 11 Biology 2025 Deleted Syllabus: This is the 2024-25 academic year, and it's been a long time since CBSE has reduced its syllabus by approximately 30% (not for all subjects). Following that, NCERT rationalized their textbook content to ensure smooth and accurate learning for students. There are students who still have old NCERT textbooks that do not follow the reduced syllabus. For them, the best way to refer to those textbooks is to have a table that guides them over the deleted topics and chapters. Here, we will discuss the latest CBSE Class 11 Biology syllabus 2024-25, CBSE Class 11 Biology deleted syllabus, and NCERT deleted syllabus for Class 11 Biology. Students can follow all these to ensure error-free preparation for their 2025 board exams.
CBSE Class 11 Biology Syllabus 2024-25
The Central Board of Secondary Education (CBSE) has released the 2024-25 syllabus that also includes the CBSE Class 11 Biology syllabus. The new syllabus has no major changes in terms of deletions or additions of topics. Still, it is important to have a PDF of the latest syllabus to guide for the final exams. Check the CBSE Class 11 Biology 2024-25 Syllabus PDF and download for better understanding.
CBSE Class 11 Biology Deleted Syllabus
CBSE has revised its curriculum during the 2020-21 session. Since then, no major changes have been made in the syllabus. The deletion was done to encourage students to be involved in practical activities rather than rote learning. Check the list of deleted topics here.
| Chapter Number | Chapter Name | Eliminated/Deleted Topics | Topics Added |
| Unit 1: Diversity of Living Organisms | |||
| 1 | The living world | tools for study of taxonomy museums, zoological parks, herbaria, botanical gardens. | - |
| 2 | Biological Classification | No change | - |
| 3 | Plant Kingdom | Topics excluded – Angiosperms, Plant Life Cycle and Alternation of Generations | - |
| 4 | Animal Kingdom | No Change | - |
| Unit 2: Structural Organization in Animals and Plants | |||
| 5 | Morphology of Flowering Plants | Modifications of different parts of flowering plants: root, stem, leaf, inflorescence, flower, fruit and seed | Description of family Solanaceae |
| 6 | Anatomy of Flowering Plants | - | tissue systems in dicots and monocots. |
| 7 | Structural Organisation in Animals | Morphology, anatomy and functions of different systems of an insect (cockroach) | Morphology, anatomy and functions of different systems of a frog |
| Unit 3: Cell: Structure and Function | |||
| 8 | Cell-The Unit of Life | No Change | - |
| 9 | Biomolecules |
| - |
| 10 | Cell Cycle and Cell Division | No Change | - |
| Unit 4: Plant Physiology | |||
| 11 | Transport in Plants | Complete Chapter Revomed | - |
| 12 | Mineral Nutrition | Complete Chapter Revomed | - |
| 13 | Photosynthesis in Higher Plants | No Change | - |
| 14 | Respiration in Plants | No Change | - |
| 15 | Plant - Growth and Development | seed dormancy; vernalisation; photoperiodism. | - |
| Unit 5: Human Physiology | |||
| 16 | Digestion and Absorption | Complete Chapter Removed | - |
| 17 | Breathing and Exchange of Gases | No Change | - |
| 18 | Body Fluids and Circulation | No Change | - |
| 19 | Excretory Products and their Elimination | No Change | - |
| 20 | Locomotion and Movement | No Change | - |
| 21 | Neural Control and Coordination | reflex action; sensory perception; sense organs; elementary structure and functions of eye and ear | - |
| 22 | Chemical Coordination and Integration | No Change | - |
To download this deleted syllabus in PDF format, click on the link provided below:
| Download CBSE Class 11 Biology Deleted Syllabus PDF |
NCERT Deleted Syllabus Class 11 Biology
Soon after the revision of CBSE Class 11 curriculum, NCERT implemented the changes in the textbooks. This was done to ensure that students do not get confused and get the right information, which is required to pass their school examination. Check the NCERT Class 11 Biology rationalised content below for better understanding.
| Chapter | Page No. | Dropped Topics/Chapters |
| 3–5 | 1.1 What is ‘Living’? | |
| 11–14 | 1.4 Taxonomical Aids | |
| Chapter 1: The Living World | 12 12 13 | 1.4.2 Botanical Gardens 1.4.3 Museum 1.4.4 Zoological Parks |
| 14 | Summary (Para 2) | |
| 15 | Question no. 10 | |
| 40–41 | 3.5 Angiosperms | |
| Chapter 3: Plant Kingdom | 42–43 44 | 3.6 Plant Life Cycles and Alternation of Generations Summary (Para 5 and 6) |
| 45 | Question no. 10 | |
| 67–68 | 5.1.2 Modifications of Root | |
| 68–69 | 5.2.1 Modifications of Stem | |
| Chapter 5: Morphology of Flowering Plants | 71 | 5.3.4 Modifications of Leaves |
| 78–79 | 5.9.1 Fabaceae | |
| 81 | 5.9.3 Liliaceae | |
| 82–83 | Question nos 1, 2, 6 (b) 8, 9, 12, 14 | |
| 84 | 6.1 The Tissues | |
| 84–85 | 6.1.1 Meristematic Tissues | |
| 86–87 | 6.1.2.1 Simple Tissues (Para 2, 3) | |
| 87–88 | 6.1.2.2 Complex Tissues (Para 4) | |
| 94 | 6.4 Secondary Growth | |
| Chapter 6: Anatomy of Flowering Plants | 94–95 | 6.4.1 Vascular Cambium 6.4.1.2 Activity of the Cambial Ring 6.4.1.3 Spring Wood and Autumn Wood |
| 99 | 6.4.1.4 Heartwood and Sapwood | |
| 96–97 | 6.4.2 Cork Cambium | |
| 97–98 | 6.4.3 Secondary Growth in Roots | |
| 99 | Question nos 1, 2, 3, 7, 11 | |
| 100 | 7.1 Animal Tissues | |
| 101–102 | 7.1.1 Epithelial Tissue | |
| 102–103 | 7.1.2 Connective Tissue | |
| 104–105 | 7.1.3 Muscle Tissue | |
| 105–106 | 7.1.4 Neural Tissue | |
| Chapter 7: Structural Organisation in Animals | 106–111 106–107 | 7.3 Earthworm 7.3.1 Morphology |
| 107–108 | 7.3.2 Anatomy | |
| 111 | 7.4 Cockroach | |
| 111–112 | 7.4.1 Morphology | |
| 113–115 | 7.4.2 Anatomy | |
| 120–121 | Summary (Para 2, 3, 4) | |
| 121–122 | Question nos 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 14 (c) | |
| 151 | 9.8 Nature of Bond Linking Monomers in a Polymer | |
| 152 | 9.9 Dynamic State of Body Constituents—Concept of Metabolism | |
| Chapter 9: Biomolecules | 153 | 9.10 Metabolic Basis for Living |
| 160–161 | 9.11 The Living State Question nos 2, 3, 5, 8, 10 | |
| Chapter 11: Transport in Plants | 175–193 | Full Chapter |
| Chapter 12: Mineral Nutrition | 194–205 | Full Chapter |
| Chapter 15: Plant Growth and Development | 251 252 252 254 | 15.5 Photoperiodism 15.6 Vernalisation 15.7 Seed Dormancy Question nos 3, 5, 8, 10 |
| Chapter 16: Digestion and Absorption | 258–267 | Full Chapter |
| 322 | 21.5 Reflex Action and Reflex Arc | |
| 322 | 21.6 Sensory Reception and Processing | |
| 322–323 | 21.6.1 Eye | |
| 323 | 21.6.1.1 Parts of an Eye | |
| Chapter 21: Neural Control and Coordination | 323–324 | 21.6.1.2 Mechanism of Vision |
| 324–326 | 21.6.2 The Ear | |
| 327 | 21.6.2.1 Mechanism of Hearing | |
| 328 | Summary (para 3 and 4) | |
| 329–330 | Question nos 1 (b, c), 2 (c), 4, (c, d), 5 (e, f, g, h), 6 (b, c), 7, 8 (b, c), 9 (c), 10 (a), 11, 12 (c, d) | |
| 433 | ||
| Answers | 435 438–445 447–451 455 | In accordance with the reduction in Exercises in text. |
| 458–463 |
Also Check:
- Microbiology: Definition, Branches, Scope and Types of Microbes
- Photosynthesis: Definition, Reaction, Diagram and Process
- Ecology: Definition, Types, Importance And Examples
Students can also check the mock tests and preparation videos topic-wise from here to get ready for their 2025 exams. 
To check the other important study resources for CBSE Class 11, check the links below: Related: