ISC 12th Biology Blueprint 2025: Check Chapter Wise Weightage

ISC 12th Biology Blueprint 2025 available here (Image Credits: pexels.com).

ISC 12th Biology Blueprint 2025: The Council for the Indian School Certificate Examinations (CISCE) has scheduled to conduct the Biology examination on March 21, 2025 at 2 PM. Candidates can check the ISC 12th Biology Blueprint 2025 here for their reference. The chapter-wise marks distribution is unofficial and therefore it might have minor changes but the unit-wise distribution will strictly be followed in the question paper. Candidates can check the ISC 12th Biology blueprint for Reproduction, Genetics and Evolution, Biology and Human Welfare, Biotechnology and its Applications, and Ecology and Environment is available below.

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ISC 12th Biology Blueprint 2025: Check Chapter Wise Weightage

Candidates can check the ISC 12th Biology Blueprint 2025 Chapter Wise Weightage in the table below.

Unit	Chapter Name	Total Weightage
1. Reproduction	Sexual reproduction in flowering plants	6 (without options), 9 (with options)
	Human Reproduction	5 (without options), 7 (with options)
	Reproductive Health	5 (without options), 7 (with options)
2. Genetics and Evolution	Principles of inheritance and variation	5 (without options), 7 (with options)
	Molecular basis of Inheritance	4 (without options), 6 (with options)
	Evolution	6 (without options), 9 (with options)
3. Biology and Human Welfare	Human Health and Diseases	8 (without options), 11 (with options)
3. Biology and Human Welfare	Microbes in Human Welfare	6 (without options), 8 (with options)
4. Biotechnology and its Applications	Biotechnology - Principles and processes	5 (without options), 7 (with options)
4. Biotechnology and its Applications	Biotechnology and its applications	5 (without options), 8 (with options)
5. Ecology and Environment	Organisms and Populations	6 (without options), 8 (with options)
	Ecosystem	4 (without options), 6 (with options)
	Biodiversity and its Conservation	5 (without options), 7 (with options)
Total		70 (without options), 100 (with options)