Biology (Botany + Zoology — 90 questions)
Biology is half the paper and decides most ranks. NCERT line-by-line coverage is non-negotiable — the observed pattern across recent papers:
| Chapter group | Questions (approx.) | Priority |
|---|---|---|
| Human physiology (digestion, circulation, neural, endocrine, excretion) | 12 – 15 | High |
| Genetics & evolution (inheritance, molecular basis, evolution) | 10 – 12 | High |
| Plant physiology (photosynthesis, respiration, plant growth) | 6 – 8 | High |
| Cell biology & cell cycle | 4 – 6 | High |
| Ecology & environment | 6 – 8 | Medium |
| Reproduction (plants and humans) | 6 – 8 | Medium |
| Biotechnology, microbes & human welfare | 5 – 7 | Medium |
| Diversity, structural organisation & anatomy | 8 – 10 | Medium |
