CBSE Class 12 Biology Deleted Syllabus 2022-23: CBSE Class 12 Biology syllabus 2023-24 has been rationalised based on the framework of NEP 2020 which emphasizes experiential learning with creative mindset instead of increased load and rote learning. The rationalised 12th Class CBSE Biology syllabus has 5 units with 13 chapters. In this article, we have listed the complete CBSE Class 12 Biology Deleted Syllabus in a unit wise and chapter wise format. This will help students avoid preparing the irrelevant content and revise only the topics which are prescribed by CBSE for the Board Exam 2024.
CBSE Biology Class 12 Unit-wise Weightage 2023-24
Check the latest CBSE 12th Biology Unit-Wise Marks Distribution:
| Unit | Title | Marks |
| VI | Reproduction | 16 |
| VII | Genetics and Evolution | 20 |
| VIII | Biology and Human Welfare | 12 |
| IX | Biotechnology and its Applications | 12 |
| X | Ecology and Environment | 10 |
| TOTAL | 70 |
Important* CBSE Class 12 Biology Most Repeated Questions to Prepare for Board Exam 2024
CBSE Class 12 Biology Deleted Syllabus 2023-24
Next is the set of deleted topics from the theory and practical syllabus:
| Unit & Chapter | Deleted Topic |
| Unit-VI Reproduction Chapter-1: Reproduction in Organisms | (whole chapter deleted) |
| Unit-VIII Biology and Human Welfare Chapter-9: Strategies for Enhancement in Food Production | (whole chapter deleted) |
| Unit-X Ecology and Environment Chapter-13: Organisms and Populations | Organism and its Environment, Major Aboitic Factors, Responses to Abioitic Factors, Adaptations |
| Unit-X Ecology and Environment Chapter-14: Ecosystem | Ecological Succession and Nutrient Cycles |
| PRACTICALS A. List of Experiments | 2. Collect and study soil from at least two different sites and study them for texture, moisture content, pH and water holding capacity. Correlate with the kinds of plants found in them. 3. Collect water from two different water bodies around you and study them for pH, clarity and presence of any living organism. 4. Study the presence of suspended particulate matter in air at two widely different sites. 8. Study the effect of different temperatures and three different pH on the activity of salivary amylase on starch. |
| PRACTICALS B. Study/observation of the following (Spotting) | 10. Two plants and two animals (models/virtual images) found in xeric conditions. Comment upon their morphological adaptations. 11. Two plants and two animals (models/virtual images) found in aquatic conditions. Comment upon their morphological adaptations. |
Check the list of deleted topics along with their page numbers below:
| Chapter | Page No. | Dropped Topics/Chapters |
| Chapter 1: Reproduction in Organisms | 3–18 | Full Chapter |
| Chapter 9: Strategies for Enhancement in Food Production | 165–176 178 | Full Chapter |
| Chapter 13: Organisms and Populations | 220 221–222 223–225 225–226 250–252 253–254 254–255 255 | 13.1 Organism and Its Environment 13.1.1 Major Abiotic Factors 13.1.2 Responses to Abiotic Factors 13.1.3 Adaptations Summary (para 2) Ques. 1, 2, 3, 9, 10, 11, 12 14.6 Ecological Succession 14.6.1 Succession of Plants 14.7 Nutrient Cycling 14.7.1 Ecosystem – Carbon Cycle 14.7.2 Ecosystem – Phosphorus Cycle 14.8 Ecosystem Services |
| Chapter 16: Environmental Issues | 270–286 | Full Chapter |
CBSE Class 12 Biology Exam 2024 Study Materials
- CBSE Biology Syllabus for Class 12 2024
- CBSE Biology Sample Paper Class 12 2023-24
- CBSE Class 12 Biology Additional Questions 2024
- CBSE Biology Previous Year Question Paper Class 12
- CBSE Class 12 Biology Question Paper and Solution 2023
CBSE Class 12 Biology Question Paper Design 2023-24
The question paper design has also been updated:
| Competencies | |
| Demonstrate Knowledge and Understanding | 50% |
| Application of Knowledge / Concepts | 30% |
| Analyse, Evaluate and Create | 20% |
Also Check: CBSE Class 12 Syllabus 2023-2024 PDFs RELEASED: Download New Curriculum of All Subjects