Which Of The Following Hormone Is Responsible For Apical Dominance In Plants? (A) Abscisic acid (ABA). (B) Gibberellic acid (GA). (C) Indole-3-acetic acid (IAA). (D) All Of These.

The correct answer is (C) Indole-3-acetic acid (IAA).

Apical dominance is a phenomenon in which the central stem is dominant and lateral branches are suppressed. It is due to plant hormones produced at the tip of the shoot. IAA, a type of auxin hormone, is responsible for apical dominance and cytokinin hormone is accountable for breaking the apical dominance.

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