The National Eligibility cum Entrance Test Undergraduate (NEET UG 2025) is scheduled to be held on May 4, 2025. Candidates preparing for NEET should be well-versed with the subject-wise weightage to optimize their study plan. NEET Biology comprises 90 questions, accounting for 50% of the total marks, making it a crucial section to focus on.

To help students prepare effectively, we present a chapter-wise weightage breakdown for Class 11 and 12 Biology, along with high-weightage topics that should be prioritized. Additionally, you can find the NEET 2025 Biology weightage PDF free download link for easy reference.

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Class 11 NEET 2025 Biology Weightage

1. Diversity of Living Organisms (14%)

• The Living World
• Biological Classification
• Plant Kingdom
• Animal Kingdom

2. Structural Organisation in Animals and Plants (5%)

• Morphology of Flowering Plants
• Anatomy of Flowering Plants
• Structural Organisation in Animals

3. Cell Structure and Function (9%)

• Cell – The Unit of Life
• Biomolecules
• Cell Cycle and Cell Division

4. Plant Physiology (6%)

• Transport in Plants
• Mineral Nutrition
• Photosynthesis in Higher Plants
• Respiration in Plants
• Plant Growth and Development

5. Human Physiology (20%)

• Digestion and Absorption
• Breathing and Exchange of Gases
• Body Fluids and Circulation
• Excretory Products and Their Elimination
• Locomotion and Movement
• Neural Control and Coordination
• Chemical Coordination and Integration

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Class 12 NEET 2025 Biology Weightage

6. Reproduction (9%)

• Reproduction in Organisms
• Sexual Reproduction in Flowering Plants
• Human Reproduction
• Reproductive Health

7. Genetics and Evolution (18%)

• Principles of Inheritance and Variation
• Molecular Basis of Inheritance
• Evolution

8. Biology and Human Welfare (9%)

• Human Health and Disease
• Strategies for Enhancement in Food Production
• Microbes in Human Welfare

9. Biotechnology and Its Applications (4%)

• Biotechnology – Principles and Processes
• Biotechnology and Its Application

10. Ecology and Environment (6%)

• Organisms and Populations
• Ecosystem
• Biodiversity and Its Conservation
• Environmental Issues

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High-Weightage Chapters for NEET 2025 Biology

For aspirants looking to maximize their scores, the following high-weightage topics should be prioritized:

• Human Physiology (20%)
• Genetics and Evolution (18%)
• Diversity of Living Organisms (14%)
• Reproduction (9%)
• Cell Structure and Function (9%)
• Biology and Human Welfare (9%)

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Why Understanding Chapter-Wise Weightage Matters?

• Helps in formulating a strategic study plan.
• Prioritizing high-weightage chapters increases the chances of scoring well.
• Ensures time management and focused preparation.
• Assists in revision planning by emphasizing important topics.

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Conclusion

Understanding the weightage of chapters in NEET 2025 is crucial for effective preparation. With Biology holding 50% of the total marks, focusing on high-weightage topics will boost your overall score. Make sure to download the NEET Biology chapter-wise weightage PDF to streamline your revision process.

For more updates on NEET UG 2025, stay tuned to our website!

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