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Haryana PMT Haryana PMT Solved Paper-1999

  • question_answer
    In the middle lamella of plant cell walls one of the main elements is :

    A)              iron                                          

    B)  calcium

    C)              magnesium                          

    D)  potassium

    Correct Answer: B

    Solution :

    The middle lamella of cell wall is mainly composed of 'calcium pectate' and have  'magnesium pectate' in small amount.


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