Assertion: Dark period plays more important part in flowering than light period.
Reason: Flowering occurs in short-day plant if the dark period is interrupted by light break.
(a) If both Assertion and Reason are correct and the Reason is a correct explanation of the Assertion.
(b) If both Assertion and Reason are correct but Reason is not a correct explanation of the Assertion.
(c) If the Assertion is correct but Reason is incorrect.
(d) If both the Assertion and Reason are incorrect.
(c) If the Assertion is correct but Reason is incorrect.
Explanation:
It has been demonstrated that flowering in plant is more of a response to the dark period than to the light period. In short day plants, the plants can flower in complete darkness if supplied with exogenous nutrients. Flowering is prevented in them if dark period below the critical level is interrupted by a flash of light. Interruption of light by dark inhibits flowering under normal photoperiods.