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How many given matches are correct?
(a) Mg – Association of ribosomal sub-units.
(b) S – Constituent of biotin and thiamine.
(c) Fe – Activates catalase.
(d) N – Mineral elements required by plants in the greatest amount.

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Three

One

Two

Four

answer is C.

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Detailed Solution

Iron activates catalase enzyme.

Sulphur is the main constituent of several coenzymes, vitamins (thiamine, biotin, Coenzyme A) and ferredoxin.

Magnesium is a constituent of the ring structure of chlorophyll and helps to maintain the ribosome structure.

Nitrogen is the essential nutrient element required by plants in the greatest amount.

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