Which Plant Hormone is Responsible for Apical Dominance

Question

Which plant hormone is responsible for apical dominance?
A) auxin
B) ethylene
C) cytokinin
D) gibberellin

Accepted Answer

Apical dominance is controlled by the hormone auxin, which is produced in the shoot apex and transported downwards towards the plant roots. Auxin inhibits the growth of lateral buds located below the apical meristem, resulting in the promotion of vertical growth and the suppression of lateral branching.