Based on 10-year NEET PYQ analysis (2014–2024). Use this table to build your study priority list before the NEET 2027 countdown begins.
| Chapter | Class | Avg Qs/Year | Marks Range | Priority | Key Topics | Resources |
|---|---|---|---|---|---|---|
| Biotechnology: Principles and Processes | Class 12 | 5–6 | 20–24 | Ultra High-Yield | Restriction enzymes, Recombinant DNA, PCR steps | |
| Chemistry: Top 10 Chapters | Class – | 2–3 | 8–12 | Core | Core NCERT concepts | |
| Anatomy of Flowering Plants | Class 11 | 2–3 | 8–12 | Core | Meristematic tissues, Vascular bundles, Dicot vs Monocot anatomy | |
| Animal Kingdom | Class 11 | 3–4 | 12–16 | High-Yield | Coelom types, Symmetry, Notochord | |
| Biological Classification | Class 11 | 3–4 | 12–16 | High-Yield | Whittaker 5 Kingdoms, Monera traits, Dinoflagellates | |
| Biomolecules | Class 11 | 3–4 | 12–16 | High-Yield | Amino acid structure, Glycosidic/Peptide bonds, Enzyme kinetics | |
| Body Fluids & Circulation | Class 12 | 2–3 | 8–12 | Core | Blood components, ABO & Rh groups, Double circulation | |
| Cell: The Unit of Life | Class 11 | 2–3 | 8–12 | Core | Prokaryote vs Eukaryote, Organelle functions, Cytoskeleton | |
| Chemical Coordination & Integration | Class 12 | 2–3 | 8–12 | Core | Endocrine glands, Hormones & receptors, Feedback loops | |
| Neural Control & Coordination | Class 12 | 2–3 | 8–12 | Core | Neuron anatomy, Action potential, Synapse | |
| Plant Growth & Development | Class 11 | 1–2 | 4–8 | Core | Auxin/Cytokinin/ABA, Photoperiodism, Vernalisation | |
| Photosynthesis in Higher Plants | Class 11 | 2–3 | 8–12 | Core | Light reactions, Calvin cycle, Photorespiration | |
| Respiration in Plants | Class 11 | 2–3 | 8–12 | Core | Glycolysis, Krebs cycle, ETC & ATP yield | |
| Breathing & Exchange of Gases | Class 11 | 2–3 | 8–12 | Core | Respiratory volumes, Breathing mechanism, Haemoglobin dissociation curve | |
| Excretory Products & Their Elimination | Class 12 | 2–3 | 8–12 | Core | Nephron structure, Counter current mechanism, Osmoregulation | |
| Locomotion & Movement | Class 11 | 2–3 | 8–12 | Core | Muscle types, Sliding filament theory, Joints | |
| Cell Cycle & Cell Division | Class 11 | 2–3 | 8–12 | Core | Mitosis stages, Meiosis I & II, Cell cycle checkpoints | |
| Evolution | Class 12 | 3–4 | 12–16 | High-Yield | Origin of life, Hardy-Weinberg, Homologous/Analogous | |
| Human Health & Disease | Class 12 | 3–4 | 12–16 | High-Yield | Innate vs Acquired immunity, Plasmodium life cycle, Cancer types | |
| Human Reproduction | Class 12 | 3–4 | 12–16 | High-Yield | Gametogenesis, Menstrual cycle, Fertilisation | |
| The Living World | Class 11 | 1–2 | 4–8 | Core | Taxonomic hierarchy, Taxon & species definitions, Herbarium & museum | |
| Microbes in Human Welfare | Class 12 | 2–3 | 8–12 | Core | Household microbes, Biogas, Sewage treatment | |
| Molecular Basis of Inheritance | Class 12 | 8–9 | 32–36 | ★ Highest NEET Yield | DNA replication, Transcription, Translation | |
| Morphology of Flowering Plants | Class 11 | 3–4 | 12–16 | High-Yield | Root/Stem modifications, Inflorescence types, Floral formulas | |
| Plant Kingdom | Class 11 | 2–3 | 8–12 | High-Yield | Algae (green/brown/red), Bryophyte life cycle, Pteridophyte heterospory | |
| Principles of Inheritance and Variation | Class 12 | 5–6 | 20–24 | Ultra High-Yield | Monohybrid/Dihybrid crosses, Sex determination, Chromosomal disorders | |
| Reproductive Health | Class 12 | 2–3 | 8–12 | High-Yield | IUDs, Vasectomy/Tubectomy, IVF/ZIFT/GIFT/ICSI | |
| Sexual Reproduction in Flowering Plants | Class 12 | 3–4 | 12–16 | High-Yield | Microsporogenesis, Megasporogenesis, Double fertilisation | |
| Structural Organisation in Animals | Class 11 | 2–3 | 8–12 | Core | Epithelial tissue types, Frog & Cockroach organ systems | |
| Chapter Title | Class – | 2–3 | 8–12 | Core | Core NCERT concepts | |
| Physics: Top 10 Chapters | Class – | 2–3 | 8–12 | Core | Core NCERT concepts | |
| Organisms and Populations | Class 12 | 2–3 | 8–12 | Core | Population interactions, Growth models (logistic/exponential) | |
| Ecosystem | Class 12 | 2–3 | 8–12 | Core | Ecological pyramids, Energy flow, Nutrient cycling | |
| Biodiversity and Conservation | Class 12 | 2–3 | 8–12 | Core | Biodiversity hotspots, In-situ vs Ex-situ, IUCN Red List categories |
Molecular Basis of Inheritance consistently has the highest NEET Biology weightage — 8 to 9 questions (32–36 marks) every year. It is followed by Principles of Inheritance and Variation (5–6 Qs) and Biotechnology: Principles and Processes (5–6 Qs).
Chapter-wise weightage is calculated by analysing the last 10 years of NEET official question papers (2014–2024), counting the number of questions set from each NCERT chapter, and computing the average.
Class 12 Biology typically contributes 55–60% of NEET Biology questions while Class 11 contributes 40–45%. However, high-yield Class 11 chapters like Biological Classification, Animal Kingdom, and Biomolecules must not be skipped.
NEET 2027 Biology section has 100 questions (50 Botany + 50 Zoology) worth 400 marks, out of 720 marks overall. Biology alone contributes 55.6% of the total NEET score.
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