Movement of IAA in a Shoot Tip Is as Follows

Multiple Choice

Movement of IAA in a shoot tip is as follows:

A) IAA initially moves downward from the shoot tip via polar transport.
B) IAA initially moves laterally from the shaded to illuminated side of the shoot tip.
C) IAA initially moves laterally from the illuminated to shaded side of the shoot tip.
D) IAA initially moves laterally in the shoot tip via non-polar transport.
E) IAA moves from root tips upwards towards leaves.