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10th Class Science Control and Coordination

  • question_answer 46)
        The substance that triggers the fall of mature leaves and fruits from plants is due to (a) auxin                              (b) gibberellin                    (c) abscisic acid                  (d) cytokinin

    Answer:

                      (c) Abscisic acid is responsible for the formation of layer of abscission. This layer disconnect the living tissue of leaf from the other parts.


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