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NEET Zoology PYQ Analysis 2020–2026: Chapter-wise Weightage, Topic Trends & Practice
NEET Zoology 2020–2026: 388 questions over 16 chapters. Weightage, difficulty, rising and falling chapters, most-repeated topics and PYQ practice.
Edurack
October 13, 2026
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This guide breaks down 388 NEET Zoology questions from 2020–2026 (Re-NEET 2026 included) across 16 chapters. For every chapter you get the weightage, difficulty and trend, and each chapter links to its own topic-wise analysis and PYQ practice.
Questions per paper
| Paper | Zoology questions |
|---|---|
| NEET 2020 | 45 |
| NEET 2021 | 63 |
| NEET 2022 | 52 |
| NEET 2023 | 54 |
| NEET 2024 | 50 |
| NEET 2025 | 41 |
| NEET 2026 | 41 |
| Re-NEET 2026 | 42 |
Chapter-wise weightage
All 16 chapters ranked by questions asked. Click a chapter for its full topic breakdown.
| # | Chapter | Qs | Share | Easy | Med | Hard | Trend |
|---|---|---|---|---|---|---|---|
| 1 | Biotechnology - Principles and Processes | 46 | 11.9% | 17 | 21 | 8 | steady |
| 2 | Animal Kingdom | 38 | 9.8% | 16 | 18 | 4 | falling |
| 3 | Biomolecules | 38 | 9.8% | 14 | 17 | 7 | falling |
| 4 | Human Reproduction | 32 | 8.2% | 8 | 17 | 7 | rising |
| 5 | Structural Organisation in Animals (Animal Tissues) | 31 | 8% | 14 | 14 | 3 | falling |
| 6 | Biotechnology and its Applications | 27 | 7% | 9 | 17 | 1 | falling |
| 7 | Evolution | 25 | 6.4% | 12 | 11 | 2 | steady |
| 8 | Human Health and Disease | 25 | 6.4% | 7 | 15 | 3 | steady |
| 9 | Locomotion and Movement | 24 | 6.2% | 5 | 17 | 2 | steady |
| 10 | Reproductive Health | 23 | 5.9% | 9 | 13 | 1 | falling |
| 11 | Body Fluids and Circulation | 18 | 4.6% | 4 | 12 | 2 | steady |
| 12 | Chemical Coordination and Integration | 15 | 3.9% | 8 | 5 | 2 | rising |
| 13 | Excretory Products and their Elimination | 15 | 3.9% | 4 | 7 | 4 | steady |
| 14 | Breathing and Exchange of Gases | 13 | 3.4% | 2 | 9 | 2 | falling |
| 15 | Digestion and Absorption | 10 | 2.6% | 6 | 4 | 0 | falling |
| 16 | Neural Control and Coordination | 8 | 2.1% | 2 | 4 | 2 | steady |
Priority tiers for Zoology
Tier 1: the chapters behind half the paper
- Biotechnology - Principles and Processes: 46 Qs (11.9%)
- Animal Kingdom: 38 Qs (9.8%)
- Biomolecules: 38 Qs (9.8%)
- Human Reproduction: 32 Qs (8.2%)
- Structural Organisation in Animals (Animal Tissues): 31 Qs (8%)
- Biotechnology and its Applications: 27 Qs (7%)
Tier 2: the next chapters, up to about 80%
- Evolution: 25 Qs (6.4%)
- Human Health and Disease: 25 Qs (6.4%)
- Locomotion and Movement: 24 Qs (6.2%)
- Reproductive Health: 23 Qs (5.9%)
- Body Fluids and Circulation: 18 Qs (4.6%)
Tier 3: the remaining 5 chapters
- Chemical Coordination and Integration: 15 Qs
- Excretory Products and their Elimination: 15 Qs
- Breathing and Exchange of Gases: 13 Qs
- Digestion and Absorption: 10 Qs
- Neural Control and Coordination: 8 Qs
Trends across the years
Asked more often lately
Comparing 2025, 2026 and Re-NEET 2026 with 2020–2022:
- Human Reproduction: 3 to 4.3 questions per paper
- Chemical Coordination and Integration: 1.3 to 2.7 questions per paper
Asked less often lately
- Animal Kingdom: 6.3 to 4 questions per paper
- Biomolecules: 5.7 to 3.7 questions per paper
- Structural Organisation in Animals (Animal Tissues): 4.3 to 2.7 questions per paper
- Biotechnology and its Applications: 4.3 to 3 questions per paper
- Reproductive Health: 3.7 to 1.7 questions per paper
- Breathing and Exchange of Gases: 2.3 to 1 questions per paper
- Digestion and Absorption: 2 to 0 questions per paper
Chapters in the latest two papers
Most questions in NEET 2026 plus Re-NEET 2026:
- Biotechnology - Principles and Processes: 5 in NEET 2026, 4 in Re-NEET 2026
- Evolution: 3 in NEET 2026, 6 in Re-NEET 2026
- Animal Kingdom: 4 in NEET 2026, 4 in Re-NEET 2026
- Human Reproduction: 3 in NEET 2026, 5 in Re-NEET 2026
- Locomotion and Movement: 3 in NEET 2026, 5 in Re-NEET 2026
- Biomolecules: 5 in NEET 2026, 2 in Re-NEET 2026
- Human Health and Disease: 2 in NEET 2026, 3 in Re-NEET 2026
- Body Fluids and Circulation: 2 in NEET 2026, 3 in Re-NEET 2026
- Structural Organisation in Animals (Animal Tissues): 2 in NEET 2026, 2 in Re-NEET 2026
- Biotechnology and its Applications: 3 in NEET 2026, 1 in Re-NEET 2026
Easiest and toughest chapters
Most scoring (highest share of easy questions)
Chapters with at least 8 questions:
- Digestion and Absorption: 60% easy of 10 tagged
- Chemical Coordination and Integration: 53% easy of 15 tagged
- Evolution: 48% easy of 25 tagged
- Structural Organisation in Animals (Animal Tissues): 45% easy of 31 tagged
- Animal Kingdom: 42% easy of 38 tagged
- Reproductive Health: 39% easy of 23 tagged
- Biotechnology - Principles and Processes: 37% easy of 46 tagged
- Biomolecules: 37% easy of 38 tagged
Most demanding (highest share of hard questions)
- Excretory Products and their Elimination: 27% hard of 15 tagged
- Neural Control and Coordination: 25% hard of 8 tagged
- Human Reproduction: 22% hard of 32 tagged
- Biomolecules: 18% hard of 38 tagged
- Biotechnology - Principles and Processes: 17% hard of 46 tagged
- Breathing and Exchange of Gases: 15% hard of 13 tagged
The 15 most-repeated Zoology topics
| Topic | Chapter | Total Qs | Papers |
|---|---|---|---|
| Polymerase Chain Reaction (Denaturation, Annealing, etc.) | Biotechnology - Principles and Processes | 7 | 5 |
| Disorder of Muscular and Skeletal System | Locomotion and Movement | 7 | 5 |
| Gel Electrophoresis (Separation and Isolation of DNA Fragments) | Biotechnology - Principles and Processes | 5 | 5 |
| Convergent and Divergent Evolution | Evolution | 5 | 5 |
| Cloning Vectors (Plasmid (pBR322)) | Biotechnology - Principles and Processes | 5 | 4 |
| Primary and Secondary Metabolites (Examples and Function) | Biomolecules | 5 | 4 |
| Biotechnological Applications in Medicine (Recombinant Insulin - Humulin) | Biotechnology and its Applications | 5 | 4 |
| Birth Control (IUDS) | Reproductive Health | 5 | 3 |
| Enzymes (Classification and Nomenclature of Enzymes) | Biomolecules | 4 | 4 |
| Biotechnological Applications in Agriculture (Bt Cotton) | Biotechnology and its Applications | 4 | 4 |
| Joints (Fibrous, Cartilaginous, etc.) | Locomotion and Movement | 4 | 4 |
| Mechanism of Muscle Contraction (Sliding Filament Theory of Muscle Contraction) | Locomotion and Movement | 4 | 4 |
| Birth Control (Barrier Methods) | Reproductive Health | 4 | 4 |
| Cloning Vectors (pBR322, Cosmids, etc.)u– | Biotechnology - Principles and Processes | 4 | 3 |
| Processes of Recombinant DNA Technologies (Isolation of the Genetic Material (DNA)) | Biotechnology - Principles and Processes | 4 | 3 |
How to use this Zoology analysis
- Finish Tier 1 chapters first, including their recurring topics, before spreading out.
- Use the easy-share list to pick chapters where careful NCERT reading converts directly into marks.
- For each chapter, open its analysis post, solve its PYQs, and log mistakes by topic.
- Revisit the chapters from the latest two papers close to the exam, since they show the current question style.
Practise Zoology PYQs
- Practise all NEET Zoology PYQs 2020–2026
- Zoology blueprint page
- All subjects: NEET chapter-wise weightage
Frequently Asked Questions
How many NEET Zoology questions were asked from 2020–2026?
388 Zoology questions across 8 papers (2020 to 2026, plus Re-NEET 2026), spread over 16 chapters.
Which NEET Zoology chapter has the highest weightage?
Biotechnology - Principles and Processes has the highest weightage with 46 questions (11.9%). Animal Kingdom follows with 38.
Which Zoology chapters are easiest to score in?
By share of easy questions (chapters with 8+ questions), Digestion and Absorption, Chemical Coordination and Integration and Evolution lead.
How many Zoology chapters cover most of the paper?
The top 6 chapters give about half of all questions and the top 11 give about 80%.