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NEET Biology NEET PYQ-Growth and Development Plants

  • question_answer
    The closing and opening of the leaves of Mimosa pudica is due to: [AIPMT 1999]

    A) chemonastic movement

    B) thermonastic movement

    C) seismonastic movement

    D) hydrotropic movement

    Correct Answer: C

    Solution :

    [C] Seismonastic movements are nastic movements of turgor in response to stimulus of shock (like touch/mechanical/electrical/thermal/chemical shock). On touching Mimosa pudica, its leaves droop down and the stimulus travels at the speed of 1 cm/sec.


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