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CBSE Class 12 Biology Topic-Wise Weightage 2024CBSE Class 12 Biology Topic-Wise Weightage 2024: The Central Board of Secondary Education has released the CBSE Class 12 Biology section-wise topics on the official website, cbseacademic.nic.in . As per the paper pattern, CBSE class 12 Biology exam will be conducted on 70 marks and will be held in 3 hours. On the other hand, the Class 12 Biology Practical exam will take place on 30 marks. In AY 2023-24, CBSE Class 12 exam will be held from February 15, 2024 onwards. While referring to the marks distribution given here, it is highly important to note that the unit-wise weightage is as officially provided by the CBSE board; however, on the contrary, the chapter-wise weightage is unofficial and derived from an analysis of the previous years' papers. Minor changes may be made to CBSE 12th Biology chapter-wise marks distribution and hence, students are advised to prepare accordingly.
LATEST | CBSE Class 12 Biology Weightage 2025: Unit and chapter-wise marks distribution |
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CBSE Class 12 Biology Topic-Wise Weightage 2024: Theory Exam
The unit-wise details of weightage distribution for CBSE 12th Biology 2024 theory exam are as follows:
Unit VI: Reproduction
| Unit 6 Chapters | Weightage |
|---|---|
| Sexual Reproduction in Flowering Plants | 7 marks |
| Human Reproduction | 6 marks |
| Reproductive Health | 3 marks |
| Total Weightage | 16 marks |
Unit VII: Genetics and Evolution
| Unit 7 Chapters | Weightage |
|---|---|
| Principles of Inheritance and Variation | 8 marks |
| Molecular Basis of Inheritance | 8 marks |
| Evolution | 4 marks |
| Total Weightage | 20 marks |
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Unit VIII: Biology and Human Welfare
| Unit 8 Chapters | Weightage |
|---|---|
| Human Health and Diseases | 9 marks |
| Microbes in Human Welfare | 3 marks |
| Total Weightage | 12 marks |
Unit IX: Biotechnology and Its Applications
| Unit 9 Chapters | Weightage |
|---|---|
| Biotechnology - Principles and Processes | 6 marks |
| Biotechnology and its Applications | 6 marks |
| Total Weightage | 12 marks |
Also read | CUET UG Biology 2024 Expected Topic-Wise Weightage
Unit X: Ecology and Environment
| Unit 10 Chapters | Weightage |
|---|---|
| Organisms and Populations | 5 marks |
| Ecosystem | 3 marks |
| Biodiversity and Its Conservation | 2 marks |
| Total Weightage | 10 marks |
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CBSE Class 12 Biology Topic-Wise Weightage 2024: Practical Exam
Go through the weightage distribution of the CBSE Class 12 Biology Practical paper here in the following table:
| Evaluation Scheme | Marks Distribution |
|---|---|
| One major experiment | 5 marks |
| One minor experiment | 4 marks |
| Slide preparation | 5 marks |
| Spotting | 7 marks |
| Practical record and viva voce | 4 marks |
| Investigatory project and its project record + viva voce | 5 marks |
| Total Weightage | 30 marks |
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