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Plant Hormones

Hormone invol...

Question

Hormone involved in photoperiodism is

A

IAA

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B

Gibberellin

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C

Kinetin

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D

2, 4-D

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Solution

The correct option is B Gibberellin
Gibberellins affect several reproductive processes in plants. They stimulate flowering, particularly in long-day plants (photoperiodism). In addition, gibberellins substitute for the low temperature that biennials require before they begin flowering (vernalisation).
Thus, the correct answer is option B.

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