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Plant Growth and Development question

2014 · Q6
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Plant Growth and Development question

2014 · Q6

NEETBiologyPlant Growth and DevelopmentMCQ+4 / −1
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. A
    It made possible the isolation and exact identification of auxin.
  2. B
    It is the basis for quantitative determination of small amounts of growth-promoting substances.
  3. C
    It supports the hypothesis that 1AA is auxin.
  4. D
    It demonstrated polar movement of auxins.
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