Question

Stomata closes in response to

• A. Hot dry weather
• B. Absicisic acid
• C. Cytokinin
• D. Both A and B

Answer 1

The correct option is D Both A and B

Stomata are the structure present in the leaf which is involved in the loss of water through transpiration. When there is hot and dry weather water is present in less amount so, low absorption through roots. When there is the scarcity of water, there is a minimum loss of water through stomata so it results in the closing of stomata.

Abscisic acid is the plant growth regulator which is also known as the stress hormone. Due to the accumulation of ABA results in the closing of stomata.

So, the correct answer is 'Both A and B'.