Class 12 Biology Blueprint 2026
Board: Central Board of Secondary Education (CBSE)
Theory: 70 Marks
Time: 3 Hours
📊 1️⃣ Unit-Wise Weightage (Expected Pattern 2026)
| Unit | Chapter Name | Marks |
|---|---|---|
| Unit I | Reproduction | 14 |
| Unit II | Genetics & Evolution | 18 |
| Unit III | Biology & Human Welfare | 14 |
| Unit IV | Biotechnology & Its Applications | 10 |
| Unit V | Ecology & Environment | 14 |
| Total | 70 |
📝 2️⃣ Section-Wise Question Pattern (2026)
| Section | Type of Questions | Marks |
|---|---|---|
| Section A | 16 MCQs (1×16) | 16 |
| Section B | 5 Very Short (2×5) | 10 |
| Section C | 7 Short Answer (3×7) | 21 |
| Section D | 3 Long Answer (4×3) | 12 |
| Section E | 2 Case Study (5×2) | 10 |
| Total | 70 |
🎯 3️⃣ Chapter-Wise Important Weightage (Approx.)
🔹 Reproduction (14 Marks)
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Human Reproduction
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Reproductive Health
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Sexual Reproduction in Flowering Plants
🔹 Genetics & Evolution (18 Marks) ⭐ Most Important
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Molecular Basis of Inheritance
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Principles of Inheritance & Variation
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Evolution
🔹 Biology & Human Welfare (14 Marks)
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Human Health & Disease
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Microbes in Human Welfare
🔹 Biotechnology (10 Marks)
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Biotechnology: Principles & Processes
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Biotechnology & Its Applications
🔹 Ecology (14 Marks)
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Organisms & Populations
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Ecosystem
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Biodiversity & Conservation
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Environmental Issues
📌 4️⃣ Competency-Based Distribution (2026 Trend)
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50% Competency/Case Based
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30% Short/Long Conceptual
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20% MCQ Objective
🔎 5️⃣ Internal Assessment (30 Marks)
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Practical Exam – 15
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Practical Record – 5
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Viva – 5
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Investigatory Project – 5
✅ Preparation Strategy Based on Blueprint
✔ Focus more on Genetics & Ecology
✔ Practice Case Study Questions
✔ Revise Diagrams (Heart, Nephron, DNA, Flower)
✔ Solve Sample Papers regularly
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CBSE Class 12 Biology Blueprint 2026 PDF Download
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Class 12 Biology Marking Scheme 2026 with Chapter Wise Weightage
Download Class 12 Biology Blueprint 2026 CBSE with latest marking scheme, chapter-wise weightage, exam pattern and question distribution.
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CBSE Biology Blueprint 2026
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Class 12 Biology Marking Scheme 2026
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Biology Chapter Wise Weightage 2026
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CBSE Class 12 Biology Exam Pattern 2026
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Biology Board Blueprint 2026 PDF
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Biology Paper Pattern 2026
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Class 12 Biology Question Paper Pattern
Class 12 Biology Blueprint 2026 CBSE
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Latest CBSE Marking Scheme 2026
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Unit Wise Weightage
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Chapter Wise Marks Distribution
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Section Wise Question Pattern
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Internal Assessment Marks
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Preparation Strategy
