| Assertion(A): | Plants photosynthesise during the day, whereas they respire at night. |
| Reason(R): | Photosynthesis can occur in the presence of sunlight whereas respiration cannot. |
| 1. | Both (A) and (R) are true and (R) is the correct explanation of (A) |
| 2. | Both (A) and (R) are true but (R) is not the correct explanation of (A). |
| 3. | (A) is true but (R) is false. |
| 4. | Both (A) and (R) are false. |