NEET NEET SOLVED PAPER 2015 (Re)

  • question_answer
    Root pressure develops due to                                                                                                                

    A)  active absorption

    B)  low osmotic potential in soil

    C)  passive absorption

    D)  increase in transpiration

    Correct Answer: A

    Solution :

    Root pressure is the positive pressure that develops in the roots of plants by the active absorption of nutrients from the soil. When the nutrients are actively absorbed by root hairs, water (along with minerals) increases the pressure in the xylem. This pressure pushes water up to small heights.                                     


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