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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 .Of what sighifcance is this exeriment

A

It made possible the isolation and exact identification of auxin

B

It is the basis for quantitative determination of small amounts of growth promoting substances

C

It supports the hypothesis that IAA is auxin

D

It demonstrated polar movement of auxins

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The correct Answer is:
B
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