2. Solved Papers
  3. NEET

NEET AIPMT SOLVED PAPER 2001

  • question_answer
                                      Hormone responsible for senescence is:                                                                                                              

    A)                 ABA                      

    B)                 auxin    

    C)                 GA                         

    D)                 cytokinin

    Correct Answer: A

    Solution :

                    Senescence is an active genetically controlled developmental process in which cellular structure and macro-molecules are broken down and translocated away from the senescing organ (typical leaves) to actively growing reason that serve as nutrient sinks. Senescence is initiated by environmental cues and is regulated by the hormones e.g., ABA (Abscisic Acid). Higher amounts of ABA stops protein and RNA synthesis and accelerating the senescence.


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