NEW DELHI: Aspiring medical students preparing for NEET UG 2025 must prioritize these high-weightage chapters in Biology to maximize their scores. Topics like Genetics and Evolution, Human Physiology and Ecology consistently contribute a significant portion of the NEET exam’s questions. With high competition, strategic focus on these important topics could make an impactful difference in securing a top rank.
Biology: Most Important Topics for NEET 2025
Since Biology plays a crucial role in determining a candidate’s overall NEET score, aspirants should concentrate on key chapters with higher weightage. Some of the most important topics include:
Join NEET News 2025 Class 11 (Botany & Zoology)
- Diversity of the Living World
- Structural Organization in Animals and Plants
- Cell Structure and Function
- Plant Physiology
- Human Physiology
Class 12 (Botany & Zoology)
- Reproduction in Organisms
- Genetics and Evolution
- Biology and Human Welfare
- Biotechnology and Its Applications
- Ecology and Environment
NEET Biology High-Weightage Chapters 2025
The NEET exam has a total score of 720, with the Biology section contributing 360 marks, making up half of the total. This section consists of 90 questions, evenly divided into 45 questions for Botany and 45 for Zoology.
| Biology Chapters and Topics | Average Number of Questions | Weightage(%) |
| Botany | ||
| Genetics and Evolution | 15 | 25% |
| Ecology and Environment | 10 | 16% |
| Plant Physiology | 8 | 14% |
| Plant Diversity | 7 | 12% |
| Cell Structure & Function | 6 | 10% |
| Plant Reproduction | 5 | 9% |
| Morphology of Flowering Plants | 4 | 7% |
| Plant Anatomy | 2 | 4% |
| Bio-molecule | 2 | 3% |
| Total | 100% | |
| Zoology | ||
| Human Physiology | 13 | 45% |
| Human Reproduction & Reproductive Health | 5 | 16% |
| Animal Kingdom | 3 | 10% |
| Origin & Evolution | 3 | 10% |
| Human Health & Diseases | 3 | 9% |
| Structural Organization in Animals | 2 | 5% |
| Animal husbandry | 1 | 3% |
| Biology and Human Welfare | 1 | 2% |
| Total | 100% | |
Effective Study Strategies for NEET 2025
- Master NCERT Books – Nearly 90% of NEET questions are NCERT-based.
- Analyze Past Papers – Identify trends and chapter-wise weightage.
- Take Mock Tests – Improve speed, accuracy, and confidence.
- Strengthen Weak Areas – Revise and practice consistently.
- Follow a Study Schedule – Ensure balanced preparation across subjects.
