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    Question

    The unripe fruits and few vegetables contain an

    insoluble stiffening material called_____. It gives firm texture to unripe fruits. As fruit ripens, some demethylation and hydrolysis occur  which make them softer. 
    A Protopectin Correct Answer Incorrect Answer
    B Lignin Correct Answer Incorrect Answer
    C Cellulose Correct Answer Incorrect Answer
    D Pectin Correct Answer Incorrect Answer
    E Gums Correct Answer Incorrect Answer

    Solution

    Protopectin is the water-insoluble form of pectin substances occurring in immature fruits  and to a less extent in vegetables.

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