Choose the correct statement

Easy

A

All plants require a periodic exposure to light for the induction of flowering
B

Leaves are able to measure the duration of exposure to light.
C

Long day plants can flower when they are exposed to photoperiod below the defined critical photoperiod.
D

Duration of critical photoperiod is same to all flowering plants that require light exposure for flowering

Solution

Only certain plants require certain defined duration of photoperiod for the induction of flowering. Photoperiod duration requirement varies from species to species for induction of flowering. Long day plants flower when exposed to photoperiod above their critical photoperiod.

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