Abscisic acid is called stress hormone as it

Induces flowering

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Breaks seed dormancy

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Promotes leaf fall

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Promotes stomatal closure

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Solution

The correct option is D Promotes stomatal closure
Abscisic acid is a plant hormone. It is also called as stress hormone as under stress environmental condition, it induces seed dormancy. It promotes stomatal closure under water stress condition to decrease the rate of transpiration.
Thus, the correct answer is option D.

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