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Complete analysis of NEET Biology chapter-wise weightage based on last 10 years. Know which chapters to prioritize for maximum marks in NEET 2026.
Remember these points for your NEET preparation
Biology contributes 360 marks out of 720 in NEET, making it the most scoring and important subject. Understanding which chapters carry more weightage helps you prioritize your preparation strategically. This analysis is based on the last 10 years of NEET papers (2015-2024).
| Class | Approximate Questions | Percentage |
|---|---|---|
| Class 11 Biology | 38-42 questions | 42-47% |
| Class 12 Biology | 48-52 questions | 53-58% |
Key Insight: While Class 12 has slightly higher weightage, Class 11 foundation (especially Diversity in Living World) is equally important.
| Unit | Class | Questions (Approx) | Percentage |
|---|---|---|---|
| Diversity in Living World | 11 | 12-15 | 13-17% |
| Structural Organisation | 11 | 5-7 | 6-8% |
| Cell Structure and Function | 11 | 8-10 | 9-11% |
| Plant Physiology | 11 | 9-12 | 10-13% |
| Human Physiology | 11 | 18-22 | 20-24% |
| Reproduction | 12 | 10-12 | 11-13% |
| Genetics and Evolution | 12 | 15-18 | 17-20% |
| Biology in Human Welfare | 12 | 5-7 | 6-8% |
| Biotechnology | 12 | 6-8 | 7-9% |
| Ecology | 12 | 10-12 | 11-13% |
This unit is often underestimated but contributes significantly to the paper.
| Chapter | Questions | Priority |
|---|---|---|
| The Living World | 1-2 | Medium |
| Biological Classification | 3-4 | High |
| Plant Kingdom | 4-5 | Very High |
| Animal Kingdom | 4-5 | Very High |
High-Yield Topics:
NCERT Focus Areas:
| Chapter | Questions | Priority |
|---|---|---|
| Morphology of Flowering Plants | 2-3 | High |
| Anatomy of Flowering Plants | 2-3 | High |
| Structural Organisation in Animals | 1-2 | Medium |
High-Yield Topics:
NCERT Focus Areas:
| Chapter | Questions | Priority |
|---|---|---|
| Cell: The Unit of Life | 3-4 | Very High |
| Biomolecules | 3-4 | Very High |
| Cell Cycle and Cell Division | 2-3 | High |
High-Yield Topics:
NCERT Focus Areas:
| Chapter | Questions | Priority |
|---|---|---|
| Transport in Plants | 1-2 | Medium |
| Mineral Nutrition | 1-2 | Medium |
| Photosynthesis | 3-4 | Very High |
| Respiration in Plants | 2-3 | High |
| Plant Growth and Development | 2-3 | High |
High-Yield Topics:
NCERT Focus Areas:
This is the MOST IMPORTANT unit for NEET Biology.
| Chapter | Questions | Priority |
|---|---|---|
| Digestion and Absorption | 2-3 | High |
| Breathing and Exchange of Gases | 2-3 | High |
| Body Fluids and Circulation | 3-4 | Very High |
| Excretory Products and Elimination | 3-4 | Very High |
| Locomotion and Movement | 2-3 | High |
| Neural Control and Coordination | 3-4 | Very High |
| Chemical Coordination | 2-3 | High |
High-Yield Topics:
NCERT Focus Areas:
| Chapter | Questions | Priority |
|---|---|---|
| Reproduction in Organisms | 1-2 | Medium |
| Sexual Reproduction in Flowering Plants | 4-5 | Very High |
| Human Reproduction | 4-5 | Very High |
| Reproductive Health | 1-2 | Medium |
High-Yield Topics:
NCERT Focus Areas:
| Chapter | Questions | Priority |
|---|---|---|
| Principles of Inheritance | 5-6 | Very High |
| Molecular Basis of Inheritance | 5-6 | Very High |
| Evolution | 4-5 | High |
High-Yield Topics:
NCERT Focus Areas:
| Chapter | Questions | Priority |
|---|---|---|
| Human Health and Disease | 3-4 | High |
| Strategies for Food Enhancement | 1-2 | Medium |
| Microbes in Human Welfare | 1-2 | Medium |
High-Yield Topics:
NCERT Focus Areas:
| Chapter | Questions | Priority |
|---|---|---|
| Biotechnology: Principles and Processes | 3-4 | High |
| Biotechnology and its Applications | 3-4 | High |
High-Yield Topics:
NCERT Focus Areas:
| Chapter | Questions | Priority |
|---|---|---|
| Organisms and Populations | 3-4 | High |
| Ecosystem | 3-4 | Very High |
| Biodiversity and Conservation | 2-3 | High |
| Environmental Issues | 2-3 | Medium |
High-Yield Topics:
NCERT Focus Areas:
Month 1 (December):
Month 2 (January):
Month 3 (February):
Month 4 (March):
Month 5 (April):
Month 6 (May - Before Exam):
| Component | Questions to Target | Marks |
|---|---|---|
| Human Physiology | 20/22 correct | 80 |
| Genetics | 15/17 correct | 60 |
| Reproduction | 10/12 correct | 40 |
| Ecology | 10/12 correct | 40 |
| Cell Biology | 8/10 correct | 32 |
| Plant Physiology | 9/11 correct | 36 |
| Diversity | 12/15 correct | 48 |
| Others | 10/12 correct | 40 |
| Total | 94/111 | 376 |
Accounting for -1 negative marking on 6-8 wrong attempts = 340-350 marks
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Share your thoughts, ask questions, or help fellow NEET aspirants
How many hours should I study Biology daily for NEET?
For NEET Biology, aim for 3-4 hours of focused study daily. Quality matters more than quantity!
Is NCERT enough for Biology in NEET?
Yes! NCERT covers 95% of NEET Biology questions. Master it completely before any reference book.
Which chapters have maximum weightage?
Human Physiology (20%), Genetics (18%), and Ecology (12%) are the highest-scoring areas.
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