NEET AIPMT SOLVED PAPER 1999

  • question_answer
                ABA is involved in:

    A)                                                                                                                                                        dormancy of seeds                                            

    B)             increased cell division       

    C)             root elongation                                    

    D)             shoot elongation

    Correct Answer: A

    Solution :

                    Main physiological effects of ABA (Abscisic acid) are as follows:                 a. It brings about seed dormancy, bud dormancy etc.                 b. It brings about senescence of leaves.                                c. It accelerates abscission of leaves, fruits.                 d. ABA acts a growth inhibitor.                 e .It promotes the closing of stomata.


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