CBSE Class 12 Biology Chapter-Wise Weightage

Updated On: October 16, 2023 10:04 AM

Central Board of Secondary Education has released the class 12 Biology syllabus at the official website. Check out the chapter wise weightage here.

CBSE Class 12 Biology Chapter-Wise Weightage

CBSE Class 12 Biology: The Central Board of Secondary Education has released the class 12 Biology 2022-23 syllabus at the official website, cbseacademic.nic.in. The authority has brought a change in the CBSE class 12 exam pattern. This year, only one exam will be held, unlike last year. However, there will be no changes in the CBSE class 12 syllabus.

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CBSE class 12 Biology exam will be conducted into two sections, theory (70 marks) and practical (30 marks) and the overall marks of the Biology exam will be 100. The students will be asked both the MCQs and Application based questions. The total duration of time of both the theory and practical exams will be 3 hours. CBSE Class 12 Biology exam 2023 is scheduled to be conducted on March 16.

CBSE Class 12 Biology: Chapter Wise Weightage (Theory and Practical)

Theory Exam:

As per the official notification, marks allotted to the CBSE Class 12 Biology theory paper is 70. Check out the chapter-wise marks distribution here in the following table-

Unit	Title of the chapters	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

Also read| CBSE Class 12 Biology Sample Paper 2023 PDF Download

Practical Exam:

Total allotted marks to the CBSE class 12 practical exam is 30. Also, check out the marks distribution of the CBSE class 12 Biology exam here-

Evaluation Scheme	Marks Distribution
One major experiment	5
One minor experiment	4
Slide preparation	5
Spotting	7
Practical record+ Viva voce	4
Investigatory Project and its project record 1+ Viva voce	5
Total	30

CBSE Class 12 Biology: Chapter-Wise Topics

Here the candidates can check the CBSE Class 12 Biology 2022-23 chapter-wise topics-

Unit Name	Chapters
Reproduction	Sexual Reproduction in Flowering Plants Human Reproduction Reproductive Health
Genetics and Evolution	Principles of Inheritance and Variation Molecular Basis of Inheritance Evolution
Biology and Human Welfare	Human Health and Diseases Microbes in Human Welfare
Biotechnology and its Applications	Biotechnology - Principles and Processes Biotechnology and its Applications
Ecology and Environment	Organisms and Populations Ecosystem Biodiversity and its Conservation