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    Question

    Water from soil enters into the root hairs owing to

    :
    A Atmospheric pressure Correct Answer Incorrect Answer
    B Capillary pressure Correct Answer Incorrect Answer
    C Root pressure Correct Answer Incorrect Answer
    D Osmotic pressure Correct Answer Incorrect Answer

    Solution

    In plants, the transpiration stream is the uninterrupted stream of water, and other, which is taken up by the roots and, via the xylem vessels, transported to the leaves where it will eventually evaporate into the air apoplast- interface of the substomatal cavity. It is driven in by capillary action and in some plants root pressure. The main driving factor is the difference in water potential between the soil and the substomatal cavity caused by transpiration.

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