Dr. F. Went noted that is 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. What significance is this experiment?

Options

A. It demonstrated polar , movement of auxins
B. It made possible the i~olation and ex- act identification of auxin
C. It is the basis for quantitative determi- nation of small amounts of growth-pro- moting substances.
D. It supports the hypothesis that IAA is auxin