When a Root is Placed on Its Side, What Happens

Question

When a root is placed on its side, what happens to the amyloplasts in the root cap cells?
A) They move away from the direction of gravity.
B) They settle in the direction of gravity.
C) They are digested by amylase.
D) They move into the root apical meristem.
E) They move into a root hair.

Accepted Answer

Amyloplasts in root cap cells act as statoliths, which are involved in gravity perception. When a root is placed on its side, the amyloplasts settle in the direction of gravity, helping the plant to sense and respond to the change in orientation.