CBSE Class 12 Biology Topic-Wise Weightage 2024: Chapter-wise distribution for theory and practicals

Angana Nath

Updated On: November 18, 2024 11:23 AM

Check out the complete details regarding CBSE Class 12 Biology Topic-Wise Weightage 2024 below. Find here the breakdown of the marks distribution for both theory and practical exams.
CBSE Class 12 Biology Topic-Wise Weightage 2024CBSE Class 12 Biology Topic-Wise Weightage 2024

CBSE 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.

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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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