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Hydrotropism

With respect ...

Question

With respect to photoperiodism, which of the following are long day plants?

A

Wheat, Poppy, Soyabean

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B

Wheat, Poppy, Beet

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C

Wheat, Oat, Soybean

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D

Wheat, Xanthium, Paddy

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Solution

The correct option is B Wheat, Poppy, Beet
Long day plant will be induced to flower only when the period of available light exceeds a given critical or limiting period. Examples are wheat, poppy, oat, beet, etc.

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