Why do coleoptiles grow toward light?
A)Auxin is destroyed by light.
B)Gibberellins are destroyed by light.
C)Auxin synthesis is stimulated in the dark.
D)Auxin moves away from the light to the shady side.

Question

Quizplus · Accepted Answer

Auxin, a plant hormone, moves to the shady side of the plant where it promotes cell elongation, causing the plant to bend towards the light. This differential growth towards the light source is known as phototropism.

Why Do Coleoptiles Grow Toward Light