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CBSE Class 12 Biology Chapter-Wise Weightage

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

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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.

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

To get detailed updates on the CBSE Class 12 Biology syllabus, click here

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