The primary root of a seedling grows down
A) to avoid light.
B) in response to gravity.
C) because the cells on the upper surface of the root elongate more rapidly than those on the lower surface of the root.
D) in response to different concentrations of auxin.
E) because of all of these except "to avoid light."

Question

Quizplus · Accepted Answer

The Answer of The primary root of a seedling grows down
A) to avoid light.
B) in response to gravity.
C) because the cells on the upper surface of the root elongate more rapidly than those on the lower surface of the root.
D) in response to different concentrations of auxin.
E) because of all of these except "to avoid light."

The Primary Root of a Seedling Grows Down