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Ethylene

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Question

Choose the correct answer from the alternatives given.
Which of the following plant hormones is associated with the closure of the stomata in a plant under water stress?

A

Abscisic acid

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B

Auxin

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C

Cytokinin

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D

Ethylene

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Solution

The correct option is A Abscisic acid
Abscisic acid inhibits seed germination and stimulates the closure of stomata in the epidermis and increases the tolerance of plants to various kinds of stresses. Therefore, it is also called the stress hormone.
So, the correct option is 'Abscisic acid'.

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