Photoperiodism is associated with

Auxin

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Chlorophyll

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Florigen

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Gibberellin

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Solution

The correct option is C Gibberellin
Photoperiodism is the phenomenon in which various physiological reactions like flowering response to the relative length of dark or light periods. Gibberellin is a plant hormone which brings about the rapid flowering in plants. It replaces the long day required for bolting in plants.
Thus, the correct answer is option D.

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