NEET Biology question

The stress hormone that helps plants respond to drought by inducing stomatal closure is:

(A)Auxin
(B)Abscisic acidCorrect
(C)Cytokinin
(D)Ethylene

Answer: (B)

Solution

**Abscisic acid (ABA)** is called the **stress hormone** because it stimulates the closure of stomata in the epidermis under water-stress conditions and increases the tolerance of plants to various kinds of stresses (NCERT Section 15.4.3.5). The correct option

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Question ID VK-114018