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NEET Biology NEET PYQ-Growth and Development Plants

  • question_answer
    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? [NEET 2014]

    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 movement of auxins

    Correct Answer: D

    Solution :

    [D] Dr. F Went isolated auxin from Avena coleoptile tip. His experiment demonstrated the polar movement of auxins.


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