**Abscisic acid (ABA)** is known as the 'stress hormone' because it:
APromotes growth in all conditions
BInduces stomatal closure during water stress and promotes dormancy
CStimulates flowering
DTriggers seed germination
Answer & Solution
Correct answer: B. Induces stomatal closure during water stress and promotes dormancy
ABA: closes stomata under drought (water-deficit signal), promotes seed dormancy, inhibits growth. Antagonistic to gibberellins. Often called the 'stress hormone' or 'dormin'.
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