Dr. F. Went noted that if coleoptile tips were removed and placed on agar for one hour , the agar would produce a bending when placed on one side of freshly cut coleoptile stumps .Of what signifcance is this experiment

Options

A. It is basis of quantitative determination of small amounts of growth promoting substances
B. It supports the hypothesis that IAA is auxin
C. It demonstrated polar movement of auxins
D. It made possible the isolation and exact identification of auxin.

Answer

D