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Why is abscisic acid considered like a stress hormone?

Answer and explanation

Correct answer: Because it is linked with growth inhibition and response during water shortage

The governing concept is plant hormonal control during stress. Abscisic acid, or ABA, inhibits growth and promotes protective responses such as stomatal closure when water is scarce, thereby reducing water loss. Hence option A correctly connects ABA with growth inhibition and water-stress response. Heartbeat, blood sugar, and reflex arcs belong to animal physiology or nervous coordination, so options B, C, and D are unrelated distractors.

Related tags

Abscisic AcidPlant HormonesStress ResponseGrowth InhibitionPlant HormonesControl And CoordinationScienceClass 10 Mcq

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