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Dr. F.Went note that if coleoptile tip...

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

A

It made possible the isolation and exact identification of auxin

B

It is the basic for quantiative determination of small amounts of growth - promoting substance .

C

It supports the hydpothesis that IAA is auxin

D

It demonstrated polar movement of auxins

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The correct Answer is:
A
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