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 ?

Options

(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

Correct Answer:

It made possible the isolation and exact identification of auxin.

Explanation:

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