First slide

Photoperiodism

Question

Gibberellic acid has been successfully used to induce flowering

Easy

A

in short day plants under long day conditions.
B

in long day plants under short day conditions.
C

in some short day and long day plants.
D

in neither short day nor long day plants.

Solution

Gibberellin substitutes vernalisation and photoperiod in long day plants and in most cases there is little or no significance of gibberellin in short day plants.

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