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Which of the following factors exclusively affects reproduction in seasonal breeders, both plants and animals?

A. Water

B. Temperature

C. Photoperiod

D. All of these

Correct Answer : C.


Photoperiod is the physiological reaction of organisms to the length of day or night. It occurs in plants and animals. It can also be defined as the developmental responses of plants to the relative lengths of light and dark periods. Photoperiod exclusively affects the reproduction in seasonal breeders, both plants and animals.

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