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(A) Abscisic acid $(ABA)$ is a plant growth inhibitor.It acts as a stress hormone and is primarily responsible for the closure of stomata during water

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$ABA$

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(A) Abscisic acid $(ABA)$ is a plant growth inhibitor.It acts as a stress hormone and is primarily responsible for the closure of stomata during water stress conditions.When a plant experiences water deficiency,$ABA$ is synthesized in the leaves,which triggers the efflux of potassium ions $(K^+)$ from guard cells,leading to a decrease in turgor pressure and subsequent closure of stomata to prevent transpiration.

Which hormone also plays a role in the closing of stomata?

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