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NEET AIPMT SOLVED PAPER 2003

  • question_answer
                    Plants deficient of element zinc, show its effect on the biosynthesis of plant growth hormone:

    A)                 ethylene               

    B)                 abscisic acid                         

    C)                 auxin     

    D)                 cytokinin

    Correct Answer: C

    Solution :

                    Deficiency of zinc is characterized by a reduction in internodal growth due to which plant develops rosette habit of growth. The leaves may also be small and distorted. These results are due to loss of capacity to produce auxin indoleacitic acid.


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