Q 1623456341.     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 significance is this experiment?

AIPMT 2014
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 movements of auxins.

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