Practice question
Question
Stomatal closure under drought stress is mediated by:
Explanation
Go with C — Abscisic acid. Under STOMATA MOVEMENT, this is the standard explanation you’d use in class: it names the real driver or definition, while the rest are nearby but wrong. Not these: A) Auxin; B) Cytokinin; D) Gibberellin. When two options sound similar, choose the one that matches the textbook definition most tightly.