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    Which plant is used for the indication of the permanent wilting point?
    Question

    Which plant is used for the indication of the permanent wilting point?

    A.

    Safflower

    B.

    Sunflower

    C.

    Marigold

    D.

    None of the above

    Correct option is B


    Sunflower is used as an indicator plant for the permanent wilting point due to its sensitivity to water stress. It wilts permanently when soil moisture is insufficient for plant survival.

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