About This Guide
This guide covers all 19 chapters of Class 11 Samacheer Kalvi Biology across both volumes. Use it alongside individual chapter notes and the model papers.
Volume 1 Chapters and Weightage
| Chapter | Topic | Board Marks | NEET Questions |
|---|---|---|---|
| 1 | The Living World | 5 | 1 |
| 2 | Plant Kingdom | 10 | 2 |
| 3 | Animal Kingdom | 10 | 2–3 |
| 4 | Cell — Unit of Life | 10 | 2 |
| 5 | Cell Division | 8 | 2 |
| 6–7 | Transport, Mineral Nutrition | 10 | 2 |
Volume 2 Chapters and Weightage
| Chapter | Topic | Board Marks | NEET Questions |
|---|---|---|---|
| 13 | Photosynthesis | 12 | 3 |
| 14 | Respiration | 10 | 2 |
| 15 | Plant Growth | 8 | 1–2 |
| 16 | Digestion | 10 | 2 |
| 17 | Breathing | 10 | 2 |
| 18 | Circulation | 10 | 2–3 |
| 19 | Excretion | 10 | 2 |
Top 10 Most Important Topics (NEET + Board)
1. Photosynthesis — C3/C4, Calvin cycle, light reactions 2. Cell organelles — functions, 70S vs 80S ribosomes 3. Animal kingdom — phyla features 4. Blood groups — ABO, Rh, universal donor/recipient 5. Nephron structure and urine formation 6. Cell division — Mitosis PMAT, Meiosis I sub-stages 7. Nitrogen cycle and fixation 8. Respiratory volumes 9. Plant hormones — 5 types and their roles 10. Digestive enzymes — table of source, enzyme, substrate, product
Exam Pattern (Tamil Nadu State Board)
- Part I: 15 × 1 mark = 15
- Part II: 6 × 2 marks = 12
- Part III: 9 × 3 marks = 27
- Part IV: 5 × 5 marks = 25 (choose 5 from 7 or similar)
- Total: 70 marks (+ 30 practical = 100)
Study Strategy
60 days before exam:
30 days before:
Board Exam Tips
- Draw labelled diagrams even when not asked — it adds marks.
- For 5-mark questions, always write an introduction, body points, and a concluding statement.
- Every answer above 3 marks should have a table or diagram.
- NEET and board questions often overlap in this subject — thorough study benefits both.
Frequently Asked Questions
Cell Biology (cell structure, cell division), Plant Physiology (photosynthesis, respiration), Human Physiology (digestion, circulation, excretion) and Diversity (plant kingdom, animal kingdom) are consistently high-weightage.