CBSE Class 12 Biology Syllabus 2026: Exam Pattern & Marking Scheme Explained

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Overview of CBSE Class 12 Biology 2026

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Class 12 Biology Syllabus

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Syllabus Divided into Five Units with Marking Scheme:

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Biology and Human Welfare (12 Marks)

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CBSE Class 12 Biology Exam Pattern 2026

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Important Preparation Insights

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CBSE Board Class 12th Answer Key and Solutions 2026

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CBSE Class 12 Biology Syllabus 2026: Exam Pattern & Marking Scheme Explained

Overview of CBSE Class 12 Biology 2026

Total Marks Distribution -- 100 Theory -- 70 Practical -- 30 Exam Duration -- 3 hours Subject Code -- 044

Class 12 Biology Syllabus

(Unit-Wise)

Syllabus Divided into Five Units with Marking Scheme:

Reproduction (16 Marks)

Genetics and Evolution (20 Marks)

– Sexual reproduction in flowering plants – Human reproduction – Reproductive health

– Mendelian inheritance – Molecular basis of inheritance (DNA, RNA) – Evolution theories

Biology and Human Welfare (12 Marks)

Biotechnology and Its Applications (12 Marks)

Ecology and Environment (10 Marks)

– Human health and diseases – Immunity and the welfare function of microbes.

– Genetic Engineering (Recombinant DNA Technology), – biotechnological processes and their applications.

– Ecosystems, – Biodiversity, environmental issues, and conservation.

CBSE Class 12 Biology Exam Pattern 2026

Demonstrate Knowledge and Understanding - 50% Application of Knowledge / Concepts - 30% Analyse , Evaluate and Create - 20%

Important Preparation Insights

1. NCERT is Your Bible 2. Diagrams = Extra Marks 3. Practice Case-Based Questions 4. Focus on High-Weight Units – Genetics & Evolution – Reproduction 5. Write Answers in Points

CBSE Board Class 12th Answer Key and Solutions 2026