BHU PMT BHU PMT (Mains) Solved Paper-2005

  • question_answer
    The entry of water into root hairs is due to the force :

    A)  atmospheric pressure

    B)  osmotic pressure

    C)   turgor pressure

    D)  suction pressure

    Correct Answer: D

    Solution :

                     The reduction in the diffusion pressure of water in a solution over its pure stale is called diffusion pressure deficit or DPD. Because of the presence of diffusion pressure deficit, a solution will always tend to make up the deficit by absorbing water, diffusion pressure deficit is also called suction pressure.


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