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  3. CET Karnataka Medical

CET Karnataka Medical CET - Karnataka Medical Solved Paper-2005

  • question_answer
    Leaf fall occurs in a tree when there is an increase in the concentration of:

    A)  abscisic acid    

    B)  auxins

    C)  gibberellins    

    D)  cytokinins

    Correct Answer: A

    Solution :

    Abscisic acid is a plant growth regulator which is responsible for leaf fall, dormancy of buds and seeds, senescence, delay in flowering and reduction in transpiration.


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