Question

    Kindly Study the following questions carefully and

    choose the right answer: Transpiration is mainly effective during _______ ?
    A Day Correct Answer Incorrect Answer
    B Early evening Correct Answer Incorrect Answer
    C Just after sunset Correct Answer Incorrect Answer
    D Night Correct Answer Incorrect Answer

    Solution

    While the effect of root pressure in transport of water is more important at night, Transpiration is important during the day when the stomata are open. Thus, transpiration pull becomes the major driving force in the movement of water in the xylem during daytime. Hence, option D is correct.

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