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    Question

    Root pressure is developed due to

    _____
    A Active absorption Correct Answer Incorrect Answer
    B Passive absorption Correct Answer Incorrect Answer
    C Increase in transpiration Correct Answer Incorrect Answer
    D low osmotic potential Correct Answer Incorrect Answer

    Solution

    Due to active absorption of minerals, high osmotic potential is created. To reduce osmotic potential, water is absorbed, and hence, water potential is increased inside the xylem. Increased water potential also increases pressure in the xylem and this positive pressure is known as root pressure.

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