ISC Class 12 Biology Chapter-Wise Weightage 2024
Check out the complete details regarding ISC Class 12 Biology Chapter-Wise Weightage 2024 below. Find here the breakdown of the marks distribution for the theory paper.
ISC Class 12 Biology Chapter-Wise Weightage 2024: For Class 12, the Council for the Indian School Certificate Examinations (CISCE) has declared the unit-wise weightage for all major subjects and the same official weightage for units is detailed here. However, in regards to the chapter-wise weightage, it is based on the analysis of previous papers and is unofficial in nature. The chapter-wise marks distribution may have minor changes but the unit-wise distribution will strictly be followed in the question paper.
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ISC Class 12 Biology Chapter-Wise Weightage 2024
The total marks distribution for all units and their respective chapters is as follows:
Unit 1: Reproduction
| Chapter Name | Total Weightage without options | Total Weightage with options |
| Sexual reproduction in flowering plants | 6 marks | 9 marks |
| Human Reproduction | 5 marks | 7 marks |
| Reproductive Health | 5 marks | 7 marks |
| Total | 16 marks | 23 marks |
Unit 2: Genetics and Evolution
| Chapter Name | Total Weightage without options | Total Weightage with options |
| Principles of inheritance and variation | 5 marks | 7 marks |
| Molecular basis of Inheritance | 4 marks | 6 marks |
| Evolution | 6 marks | 9 marks |
| Total | 15 marks | 22 marks |
Unit 3: Biology and Human Welfare
| Chapter Name | Total Weightage without options | Total Weightage with options |
| Human Health and Diseases | 8 marks | 11 marks |
| Microbes in Human Welfare | 6 marks | 8 marks |
| Total | 14 marks | 19 marks |
Unit 4: Biotechnology and its Applications
| Chapter Name | Total Weightage without options | Total Weightage with options |
| Biotechnology - Principles and processes | 5 marks | 7 marks |
| Biotechnology and its applications | 5 marks | 8 marks |
| Total | 10 marks | 15 marks |
Unit 5: Ecology and Environment
| Chapter Name | Total Weightage without options | Total Weightage with options |
| Organisms and Populations | 6 marks | 8 marks |
| Ecosystem | 4 marks | 6 marks |
| Biodiversity and its Conservation | 5 marks | 7 marks |
| Total | 15 marks | 21 marks |
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