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Assertion: Dark periods play a more important part in flowering than light period. Reason: Flowering occurs in short-day plant if the dark period is interrupted by light break.

1. If both the assertion and reason are true and the reason is a correct explanation of the assertion
2. If both the assertion and reason are true but the reason is not a correct explanation of the assertion
3. If the assertion is true but the reaon is false
4. If both the assertion and reason are false E. If the assertion is false but reason is true

Correct answer: If both the assertion and reason are true but the reason is not a correct explanation of the assertion

Solution

Both statements are true: in many plants, especially short-day plants, the uninterrupted dark period is crucial, and a light break can induce flowering. However, the reason only gives an example of dark-period sensitivity; it does not fully explain why dark periods are generally more important than light periods.

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