During drought, slow growth and wilting of leaves in a plant are more related to which hormone?
Answer and explanation
Correct answer: Abscisic acid
Drought creates water stress in a plant. Abscisic acid, or ABA, acts as an important stress-related hormone; it inhibits growth under unfavorable conditions and promotes stomatal closure, which helps reduce water loss. Its role therefore fits slow growth and drought responses, making option A correct. Gibberellin generally promotes growth, while testosterone and insulin are animal hormones unrelated to this plant response.
Frequently asked questions
What is the correct answer to this question?
Abscisic acid
Why is this the correct answer?
Drought creates water stress in a plant. Abscisic acid, or ABA, acts as an important stress-related hormone; it inhibits growth under unfavorable conditions and promotes stomatal closure, which helps reduce water loss. Its role therefore fits slow growth and drought responses, making option A correct. Gibberellin generally promotes growth, while testosterone and insulin are animal hormones unrelated to this plant response.
Which subject and chapter does this question cover?
This is a Class 10 Science question. Chapter: Control and Coordination. Topic: Plant hormones.
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