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Dr. F. Went noted that is coleoptile tip...

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 is the significance of this experiment

A

(a) It demonstrated polar movement of auxins

B

(b) It made possible the isolation and exact identification of auxin

C

(c) It is the basis for quantitative determination of small amounts of growth-promoting substances.

D

(d) It supports the hypothesis that IAA is auxin

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