Question Detail

BIO 102 Plant Reproduction, Growth, and Development Dynamics Objective Question

Question

During phototropism, if light comes from one side only, how does auxin redistribute in the shoot?
Options
A It spreads equally down both sides
B It accumulates on the side directly facing the light
C It collects on the shady (dark) side
Correct Answer
D It evaporates from the tip entirely
Correct Answer

Option C is the correct answer.

Detailed Explanation

Auxin moves away from the light and collects on the shady side. This causes the cells on the dark side to elongate more, resulting in a bend toward the light.

Hint

The hormone 'hides' from the light source.

Question Info