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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? 1) It is the basis for quantitative determination of small amounts of growth-promoting substances. 2) It supports the hypothesis that IAA is auxin. 3) It demonstrated polar movement of auxins. 4) It made possible the isolation and exact identification of auxin.

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?
1) It is the basis for quantitative determination of small amounts of growth-promoting substances.
2) It supports the hypothesis that IAA is auxin.
3) It demonstrated polar movement of auxins.
4) It made possible the isolation and exact identification of auxin.

Grade:11

1 Answers

Kevin Nash
askIITians Faculty 332 Points
9 years ago
It made possible the isolation and exact identification of auxin.

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