Question
Respiration and combustion.
| Respiration | Combustion |
| (a) It is a biochemical and stepwise process. | It is physiochemical and spontaneous process. |
| (b) It occurs inside the cells. | It is a non-cellular process. |
| (c) Energy is released in steps. | Large amount of energy is released at a time. |
| (d) No light is produced in respiration. | Light may be produced in combustion. |
| (e) It is controlled by enzymes. | It is not controlled by enzymes. |
| (f) A number of intermediates are produced. | No intermediates are produced. |
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| Column I (Phases) | Column II (Their events) |
| 1. Leptotene | (a) Crossing over |
| 2. Zygotene | (b) Desynapsis |
| 3. Pachytene | (c) Synapsis |
| 4. Diplotene | (d) Bouquet stage |