Question
What is the chapter-wise weightage for NEET Biology? Which chapters carry the most marks and should be prioritised?
Solution — Step by Step
NEET has 180 questions total: 45 Physics, 45 Chemistry, 45 Botany, 45 Zoology. Biology alone accounts for 360 marks out of 720 — half the paper. Scoring well in Biology is the single biggest predictor of a good NEET rank.
| Chapter | Class | Avg. Questions | Priority |
|---|---|---|---|
| Genetics and Heredity | 12 | 5-6 | Top |
| Human Physiology (all chapters) | 11 | 10-12 | Top |
| Plant Physiology | 11 | 5-6 | Top |
| Ecology (both chapters) | 12 | 6-8 | Top |
| Cell Biology (Cell structure + Division) | 11 | 4-5 | Top |
| Molecular Basis of Inheritance | 12 | 3-4 | High |
| Human Reproduction + Reproductive Health | 12 | 4-6 | High |
| Chapter | Class | Avg. Questions |
|---|---|---|
| Animal Kingdom | 11 | 3-4 |
| Plant Kingdom | 11 | 2-3 |
| Biological Classification | 11 | 2-3 |
| Biomolecules | 11 | 2-3 |
| Biotechnology | 12 | 2-3 |
| Evolution | 12 | 2-3 |
| Human Health and Diseases | 12 | 2-3 |
flowchart TD
A[NEET Biology Priority] --> B[Must-do: 60% of questions]
A --> C[Important: 25% of questions]
A --> D[Lower priority: 15%]
B --> B1[Genetics + Molecular Biology]
B --> B2[Human Physiology - all 6 chapters]
B --> B3[Ecology - 2 chapters]
B --> B4[Plant Physiology]
C --> C1[Animal + Plant Kingdom]
C --> C2[Cell Biology]
C --> C3[Reproduction]
D --> D1[Morphology of Plants/Animals]
D --> D2[Biomolecules]Why This Works
NEET Biology is heavily skewed: the top 7-8 chapters account for about 60% of questions. Genetics + Ecology + Human Physiology together can give you 25-30 questions (out of 90). Prioritising these first gives maximum marks per hour of study.
Common Mistake
Students skip Ecology thinking it is “easy and can be done last.” Ecology is worth 6-8 questions in NEET — that is 16-32 marks. It is mostly factual and scoring. Skipping it or leaving it for the last week is a costly mistake. Give it 2-3 focused days early in your preparation.
After finishing high-weightage chapters, do a full NEET mock test. Analyse which chapters you lost marks in. Then target those specific weak areas. This feedback loop is more efficient than studying everything equally for the fifth time.