As a Seed Germinates,its Shoot Points Upward Toward Light,and Its

Multiple Choice

As a seed germinates,its shoot points upward toward light,and its roots grow downward into the soil.Turn the plant sideways,and the stem and roots bend according to the new direction of gravity.How do roots and shoots grow in opposite directions as the plant is rotated?

A) The circadian rhythms of roots and shoots are opposite.
B) The absorption of light by phytochromes only occurs in shoots.
C) through differences in thigmotropism
D) The roots and shoots respond oppositely to auxin.
E) Statoliths move in the opposite direction of roots and shoots.