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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?
It made possible the isolation and exact identification of auxin
It is the basis for quantitative determination of small amounts of growth-promoting substances
It supports the hypothesis that IAA is auxin
It demonstrated polar movement of auxins
Answers (1)
Dr. F Went isolated auxin from Avena coleoptile tip. His experiment demonstrated the polar movement of auxins, 1e. It showed that the plants grow towards light in response to a signal generated in the tip of the coleoptile by a plant hormone auxin. Hence, the correct answer is option 2.
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