PART - 2 - Unit IV : CH - 13 Plant Growth and Development — BIOLOGY STD 11 Science — Question
Rajasthan BoardEnglish MediumSTD 11 ScienceBIOLOGYPART - 2 - Unit IV : CH - 13 Plant Growth and Development1 Mark
Question
Why is abscisic acid also known as stress hormone?
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Answer
ABA stimulates the closure of stomata and increases the tolerance of plants to various kinds of stresses. Therefore, it is also called the stress hormone.
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