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Evaluation · Q4

Q.Match the correct combination. Minerals
A. Molybdenum
B. Zinc
C. Magnesium
D. Sulphur Role
  1. Chlorophyll
  2. Methionine
  3. Auxin
  4. Nitrogenase

(a) A-1, B-3, C-4, D-2
(b) A-2, B-1, C-3, D-4
(c) A-4, B-3, C-1, D-2
(d) A-4, B-2, C-1, D-3
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Step 1. Molybdenum (A) is the essential cofactor for the nitrogenase enzyme, which reduces atmospheric nitrogen to ammonia during nitrogen fixation, so A pairs with role 4, Nitrogenase.

Step 2. Zinc (B) is essential for the synthesis of the auxin indole acetic acid, so B pairs with role 3, Auxin.

Step 3. Magnesium (C) is a direct structural constituent of the chlorophyll molecule, so C pairs with role 1, Chlorophyll.

Step 4. Sulphur (D) is an essential component of the amino acid methionine (along with cystine and cysteine), so D pairs with role 2, Methionine. …

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