NEET 2027 Biology Chapters — Complete List with Weightage
All 32 NCERT Biology chapters for NEET 2027, ranked by their verified NEET 2026 question count. Spend your time where the marks are — top 7 chapters contributed 36 of 90 questions in 2026.
NTA has not officially announced NEET 2027 syllabus. Weightage below is based on verified NEET 2026 paper. Check nta.ac.in for official announcements.
Class 11 vs Class 12 split
Foundation chapters dominated by Cell Biology, Biomolecules, Human Physiology.
High-density chapters — Genetics, Biotechnology, Reproduction, Ecology.
All 32 chapters with verified weightage
Ranked by NEET 2026 actual question count. Click any chapter to practise its PYQs.
| Chapter | Class | 2026 Qs | Priority | PYQ |
|---|---|---|---|---|
| Principles of Inheritance and Variation | 12 | 7 | Must Do | Practise → |
| Biotechnology: Principles and Processes | 12 | 7 | Must Do | Practise → |
| Animal Kingdom | 11 | 6 | Must Do | Practise → |
| Biomolecules | 11 | 5 | Must Do | Practise → |
| Biodiversity and Conservation | 12 | 5 | Must Do | Practise → |
| Cell: The Unit of Life | 11 | 4 | High Priority | Practise → |
| Morphology of Flowering Plants | 11 | 4 | High Priority | Practise → |
| Breathing and Exchange of Gases | 11 | 3 | High Priority | Practise → |
| Ecosystems | 12 | 3 | High Priority | Practise → |
| Evolution | 12 | 3 | High Priority | Practise → |
| Human Reproduction | 12 | 3 | High Priority | Practise → |
| Locomotion and Movement | 11 | 3 | High Priority | Practise → |
| Molecular Basis of Inheritance | 12 | 3 | High Priority | Practise → |
| Organisms and Populations | 12 | 3 | High Priority | Practise → |
| Photosynthesis in Higher Plants | 11 | 3 | High Priority | Practise → |
| Plant Growth and Development | 11 | 3 | High Priority | Practise → |
| Sexual Reproduction in Flowering Plants | 12 | 3 | High Priority | Practise → |
| Anatomy of Flowering Plants | 11 | 2 | Medium | Practise → |
| Biotechnology and Its Applications | 12 | 2 | Medium | Practise → |
| Body Fluids and Circulation | 11 | 2 | Medium | Practise → |
| Excretory Products and Their Elimination | 11 | 2 | Medium | Practise → |
| Human Health and Diseases | 12 | 2 | Medium | Practise → |
| Microbes in Human Welfare | 12 | 2 | Medium | Practise → |
| Reproductive Health | 12 | 2 | Medium | Practise → |
| Respiration in Plants | 11 | 2 | Medium | Practise → |
| Biological Classification | 11 | 1 | Medium | Practise → |
| Cell Cycle and Cell Division | 11 | 1 | Medium | Practise → |
| Chemical Coordination and Integration | 11 | 1 | Medium | Practise → |
| Neural Control and Coordination | 11 | 1 | Medium | Practise → |
| Plant Kingdom | 11 | 1 | Medium | Practise → |
| The Living World | 11 | 1 | Medium | Practise → |
| Structural Organisation in Animals | 11 | 0 | Skim | Practise → |
Source: verified NEET 2026 Biology paper (Q91–Q180) — see the chapter-grouped answer key. Note: Genetics unit (MBI + Principles of Inheritance) totalled 10 questions combined.
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Chapter-wise PYQ practice for all 32 NEET Biology chapters. Including all 90 NEET 2026 questions. Free.