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11 grade biology others

Which of the following growth regulators is known as stress hormone?

A. Abscisic acid

B. Ethylene

C. GA₃

D. Indole Acetic Acid

Aniket Singh

10 Months agoGrade

1 Answer

Askiitians Tutor Team

Approved Tutor Answer10 Months ago

The growth regulator known as the stress hormone is Abscisic acid (A). This hormone plays a crucial role in plant responses to stress, such as drought and salinity, by regulating processes like stomatal closure and seed dormancy.

Other Growth Regulators

Ethylene (B): Involved in fruit ripening and flower wilting.
GA₃ (C): Promotes growth and elongation in plants.
Indole Acetic Acid (D): A form of auxin that regulates cell elongation and root formation.

Each of these growth regulators has distinct functions, but abscisic acid is specifically linked to stress responses in plants.

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