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Which of the following is true for photoperiodic?

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Which of the following is true for photoperiodic?

(a) It occurs only in plants

(b) It is related to flowering in plants

(c) It is related to feathers of animals

(d) It is the reaction of organisms to the length of day or night

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(d) It is the reaction of organisms to the length of day or night

It is a physiological reaction of organisms to the length of day or night. 

It occurs in both plants and animals. 

It is basically a developmental response of plants to the relative lengths of light and dark periods.

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