Phytochrome is involved in

(a) phototropism 

(b) photorespiration

(c) photoperiodism 

(d) geotropism

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1 Answers

The correct option is (c) photoperiodism.

Explanation:

Phytochrome is a chromoprotein (photosensitive pigment) that exists in two states, pr (red) or P660 and Pfr, (far red) or P730

Phytochrome is involved in photomorphogenetic responses, seed germination, bud dormancy, synthesis of gibberellin and ethylene and photoperiodism.

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