AMU Medical AMU Solved Paper-1995

  • question_answer
    Senescence of plant organs is delayed by the application of

    A)  auxin             

    B)  gibberellin

    C)  cytokinin          

    D)  ethylene.

    Correct Answer: C

    Solution :

    : Application ofcytokinins delays senescence as evidenced by retention of chlorophyll, proteins and nucleic acids. In senescence the chlorophyll of the leaves disintegrate. Leaves turn yellow, proteins are degraded and ultimately the leaves shed from the plant.


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