NEET Biology chapter-wise weightage
Questions per paper for every Biology chapter in NEET, from 9 papers from 2022–2026. The heaviest chapters were Biotechnology: Principles and Processes, Molecular Basis of Inheritance, Principles of Inheritance and Variation.
| Chapter | Questions per paper | Share of Biology | 2026 | 2025 | 2024 | 2023 | 2022 |
|---|---|---|---|---|---|---|---|
| Biotechnology: Principles and Processes | 5.56 | 5.7% | 4.5 | 7.0 | 6.0 | 5.0 | 6.0 |
| Molecular Basis of Inheritance | 5.33 | 5.5% | 2.5 | 8.0 | 5.0 | 6.5 | 6.0 |
| Principles of Inheritance and Variation | 5.0 | 5.2% | 4.0 | 3.0 | 6.0 | 5.0 | 6.0 |
| Sexual Reproduction in Flowering Plants | 4.44 | 4.6% | 4.5 | 6.0 | 5.5 | 4.0 | 3.0 |
| Human Health and Disease | 4.22 | 4.4% | 4.5 | 5.0 | 4.5 | 5.0 | 2.5 |
| Biomolecules | 4.0 | 4.1% | 3.5 | 4.0 | 5.0 | 4.0 | 3.5 |
| Human Reproduction | 4.0 | 4.1% | 4.0 | 5.0 | 5.5 | 2.5 | 3.5 |
| Animal Kingdom | 3.89 | 4.0% | 4.5 | 5.0 | 4.0 | 4.0 | 2.5 |
| Cell: The Unit of Life | 3.56 | 3.7% | 5.5 | 4.0 | 4.0 | 2.5 | 2.0 |
| Biodiversity and Conservation | 3.22 | 3.3% | 3.0 | 2.0 | 4.5 | 2.5 | 3.5 |
| Cell Cycle and Cell Division | 3.22 | 3.3% | 1.5 | 1.0 | 3.0 | 5.5 | 4.0 |
| Photosynthesis in Higher Plants | 3.11 | 3.2% | 4.0 | 2.0 | 3.0 | 3.5 | 2.5 |
| Structural Organisation in Animals | 3.11 | 3.2% | 1.0 | 1.0 | 4.0 | 4.0 | 4.5 |
| Evolution | 2.89 | 3.0% | 4.5 | 1.0 | 4.5 | 1.5 | 2.0 |
| Organisms and Populations | 2.89 | 3.0% | 3.0 | 4.0 | 3.0 | 3.0 | 2.0 |
| Plant Kingdom | 2.89 | 3.0% | 2.0 | 5.0 | 2.5 | 3.0 | 3.0 |
| Ecosystem | 2.67 | 2.8% | 2.5 | 3.0 | 1.5 | 2.5 | 4.0 |
| Chemical Coordination and Integration | 2.56 | 2.6% | 2.0 | 5.0 | 2.5 | 2.5 | 2.0 |
| Anatomy of Flowering Plants | 2.44 | 2.5% | 1.0 | 1.0 | 2.5 | 3.0 | 4.0 |
| Plant Growth and Development | 2.44 | 2.5% | 2.5 | 2.0 | 3.0 | 3.0 | 1.5 |
| Biotechnology and its Applications | 2.33 | 2.4% | 2.5 | 1.0 | 3.5 | 0.5 | 3.5 |
| Body Fluids and Circulation | 2.22 | 2.3% | 2.5 | 3.0 | 2.0 | 2.0 | 2.0 |
| Morphology of Flowering Plants | 2.11 | 2.2% | 2.5 | 2.0 | 1.0 | 2.0 | 3.0 |
| Breathing and Exchange of Gases | 1.78 | 1.8% | 2.0 | 1.0 | 2.0 | 1.5 | 2.0 |
| Locomotion and Movement | 1.78 | 1.8% | 3.5 | 0.0 | 1.5 | 1.0 | 2.0 |
| Reproductive Health | 1.78 | 1.8% | 1.5 | 1.0 | 1.5 | 2.5 | 2.0 |
| Respiration in Plants | 1.78 | 1.8% | 1.5 | 1.0 | 2.0 | 2.0 | 2.0 |
| Biological Classification | 1.56 | 1.6% | 2.0 | 2.0 | 1.5 | 1.0 | 1.5 |
| Excretory Products and their Elimination | 1.56 | 1.6% | 1.5 | 1.0 | 2.0 | 2.5 | 0.5 |
| Environmental Issues | 1.33 | 1.4% | 0.0 | 0.0 | 0.0 | 4.0 | 2.0 |
| Transport in Plants | 1.33 | 1.4% | 0.5 | 0.0 | 0.5 | 2.5 | 2.5 |
| Neural Control and Coordination | 1.22 | 1.3% | 1.0 | 0.0 | 1.5 | 2.0 | 1.0 |
| The Living World | 1.11 | 1.1% | 2.5 | 1.0 | 0.0 | 0.5 | 1.5 |
| Microbes in Human Welfare | 1.0 | 1.0% | 1.0 | 3.0 | 1.0 | 0.0 | 1.0 |
| Digestion and Absorption | 0.89 | 0.9% | 0.0 | 0.0 | 0.5 | 1.5 | 2.0 |
| Mineral Nutrition | 0.56 | 0.6% | 0.0 | 0.0 | 0.0 | 1.5 | 1.0 |
| Strategies for Enhancement in Food Production | 0.56 | 0.6% | 0.5 | 0.0 | 0.0 | 0.5 | 1.5 |
| Reproduction in Organisms | 0.33 | 0.3% | 0.5 | 0.0 | 0.0 | 0.0 | 1.0 |