Paper II
Section A
1. Movement of substances across the plasma membrane @ Effect of hypertonic / hypotonic solution
2. Absorption (Villus) & Assimilation (Liver function) @ Ruminant / Rodent
3. Lymphatic system @ Defence mechanism / Immunity (Active & Passive)
4. Plant hormone (Auxine-Phototropism / Geotropism) @ Reflex arc(synapse)-knee jerk / hand withdrawal
5. Menstrual cycle & menopause @ double fertilization & development after fertilisation
Section B
6. (a) Breathing mechanism in fish / frog / insect
(b) Green house effect @ acid rain
7.(a) Determination of Human Blood Group @ Sex-linked inheritance (haemophilia / colour-blindness)
(b) Causes of variation @ mutation
Section C
8. (a) Meiosis-Gametogenesis
(b) Mechanism of photosynthesis & factors affect rate of photosynthesis
9. (a) Colonisation & Succession in mangrove swamp / mining pond-problem and adaptation
(b) Symbiosis – Commensalism / parasitism / mutualism
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