If you’re preparing for NEET 2025, you already know that Biology is the game-changer. Out of 720 marks, a whopping 360 marks come from Biology alone. And here’s the golden truth — not all chapters are created equal. Some chapters have consistently higher weightage in NEET year after year. If you want to study smart, not just hard, this blog is your guide.
In this post, we’ll break down the highest weightage chapters in NEET Biology, based on previous year trends and expert analysis.
Class 11 – High Weightage Biology Chapters
| Chapter Name | Expected Weightage (Approx.) | Why It’s Important |
|---|---|---|
| Human Physiology | 15-20% | Core topic. Most questions come from Digestion, Respiration, Circulation, Excretion & Nervous system. |
| Cell: The Unit of Life | 5-6% | Conceptual and scoring. Questions are direct and diagram-based. |
| Plant Physiology | 8-10% | Complex but high yield – focus on Photosynthesis & Transpiration. |
| Biomolecules | 4-5% | Frequently asked numericals from Enzymes & Proteins. |
| Animal Kingdom | 4-6% | Chart-based questions. Easy scoring with proper revision. |
| Morphology of Flowering Plants | 3-4% | Questions often come from root, stem and inflorescence. |
Class 12 – High Weightage Biology Chapters
| Chapter Name | Expected Weightage (Approx.) | Why It’s Important |
|---|---|---|
| Genetics and Evolution | 12-15% | Most important chapter! Mendelian genetics, linkage, pedigree are hot topics. |
| Biotechnology: Principles & Processes | 6-8% | Easy, direct theory-based questions. |
| Human Reproduction & Reproductive Health | 8-10% | Diagram-based questions from male/female reproductive system are common. |
| Ecology & Environment | 12-14% | NEET loves Ecology! Easy scoring with consistent revision. |
| Molecular Basis of Inheritance | 6-8% | Questions from DNA replication, transcription, and translation. |
| Strategies for Enhancement in Food Production | 3-5% | Selective breeding, tissue culture are frequently asked. |
Top 5 Must-Master Chapters for NEET Biology
-
Human Physiology
-
Genetics and Evolution
-
Ecology & Environment
-
Biotechnology
-
Molecular Basis of Inheritance
Focusing deeply on these 5 will cover more than 40% of your Biology paper!
Smart Study Tips
-
Use NCERT as your Bible: 90%+ Biology questions are straight from NCERT.
-
Focus on Diagrams: NEET loves diagram-based questions, especially from Physiology and Reproduction.
-
Solve PYQs Religiously: Previous Year Questions show the pattern and repetition.
-
Revise Regularly: Spaced repetition is key for long-term retention.
Crack NEET with Schrodingo
At Schrodingo, we help you focus only on what matters. Our test series, mock tests, and crash course are designed to prioritize high-weightage chapters, so you maximize your score without wasting time.
Ready to start your smart prep? Join the Schrodingo Test Series now!
Focus more on Human Physiology, Genetics, Ecology, and Biotechnology. Stick to NCERT. Practice PYQs. Be consistent. And don’t worry — we’ve got your back at Schrodingo.