Dr. F. Went noted that if coleoptile tips were removed and placed on agar for one hour…
Biology · NEET · NTA Exams — Plant Growth and Development
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. What is the significance of 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
Answer
(B) It is the basis for quantitative determination of small amounts of growth-promoting substances
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