Which plant hormone promotes seed dormany, bud dormancy and causes stomatal closure?

Question

Which plant hormone promotes seed dormany, bud dormancy and causes stomatal closure? (A) IAA (B) Abscisic Acid (ABA) (C) GA (Gibberellic Acid) (D) Cytokinin

Tardigrade Admin · Accepted Answer

Abscisic Acid (ABA) promotes seed and bud dormancy by inhibiting growth. It is one of the most important plant's growth regulators. ABA also plays an important role in the closure of stomata in plants under water stress and its presence inhibits opening.

Q. Which plant hormone promotes seed dormany, bud dormancy and causes stomatal closure?

IAA

Abscisic Acid (ABA)

GA (Gibberellic Acid)

Cytokinin

Abscisic Acid $(A B A)$ promotes seed and bud dormancy by inhibiting growth. It is one of the most important plant's growth regulators. $A B A$ also plays an important role in the closure of stomata in plants under water stress and its presence inhibits opening.