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    Question

    Given below are two statements, one is labelled as

    Assertion A and the other is labelled as Reason R Assertion A: Nickel is essential for the function of urease enzyme. Reason R: Nickel helps in breaking down urea into NH; and CO ₂ . In light of the above statements, choose the most appropriate answer from the options given below
    A Both A and R are correct and R is the correct explanation of A Correct Answer Incorrect Answer
    B Both A and R are correct but R is NOT the correct explanation of A Correct Answer Incorrect Answer
    C A is correct but R is not correct Correct Answer Incorrect Answer
    D A is not correct but R is correct Correct Answer Incorrect Answer

    Solution

    Ni is the latest nutrient to be established as an essential nutrient to higher plants (1987). It is the metal component of urease that catalyzes the reaction CO (NH2)2 + H2O ⇔ 2NH 3 + CO 2

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