Which hormone promotes stem elongation and was first discovered while studying the growth of extremely tall and spindly rice plants?
A) Abscisic acid
B) Auxin
C) Cytokinin
D) Ethylene
E) Gibberellin

Question

Quizplus · Accepted Answer

Gibberellin promotes stem elongation and was first discovered in Japan while studying the growth of extremely tall and spindly rice plants affected by the fungal disease Gibberella fujikuroi, which produces gibberellin.

Which Hormone Promotes Stem Elongation and Was First Discovered While