Why is it correct to link abscisic acid with protection of a plant during drought?
Answer and explanation
Correct answer: It helps close stomata and reduce water loss
The governing concept is the stress response controlled partly by the plant hormone abscisic acid, or ABA. During drought, excessive evaporation through open stomata can reduce the plant’s water content. ABA promotes stomatal closure, which decreases transpiration and conserves available water, helping the plant survive. Therefore option A is correct. Insulin, blood circulation, and hearing are not plant processes and do not explain drought protection.
Frequently asked questions
What is the correct answer to this question?
It helps close stomata and reduce water loss
Why is this the correct answer?
The governing concept is the stress response controlled partly by the plant hormone abscisic acid, or ABA. During drought, excessive evaporation through open stomata can reduce the plant’s water content. ABA promotes stomatal closure, which decreases transpiration and conserves available water, helping the plant survive. Therefore option A is correct. Insulin, blood circulation, and hearing are not plant processes and do not explain drought protection.
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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