Identify the mineral nutrients on the basis of given feature.
A. Involved in the synthesis of DNA and RNA
B. Its deficiency causes grey spots of oats
C. Constituents of amino acids, methionine and cysteine
D. Activates various enzymes, especially carboxylases
A B C D
1) K Mn Ca Zn
2) Mn Mg Ca Mo
3) Mg Mn S Zn
4) Mo Mg S Fe

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answer is C.

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Detailed Solution

Magnesium is involved in the synthesis of DNA and RNA. Manganese deficiency causes grey spots of oats. Sulphur is one of the constituents of amino acids, methionine and cysteine. Zinc activates various enzymes, especially carboxylases.

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