If you expose a plant to a light that shines on the right side of a plant, which of the following best describes why the plant grows toward the light?
A) Light destroys auxin, and thus the shaded side grows faster.
B) Auxin moves from the shaded side to the lighted side where it stimulates growth.
C) Auxin moves from the lighted side to the shaded side where it stimulates growth.
D) Light destroys auxin and thus the lighted side grows faster.
E) Auxin moves from the shaded side to the lighted side where it inhibits growth.

Question

Quizplus · Accepted Answer

Auxin is a plant hormone that promotes cell elongation. It moves to the shaded side of the plant, causing those cells to elongate more and the plant to bend toward the light.

If You Expose a Plant to a Light That Shines