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Question

Which one is an essential mineral, not constituent of any enzyme but stimulates the activity of many enzymes?

A
Zn
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B
Mn
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C
K
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D
Mg
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Solution

The correct option is C K
Potassium is a macronutrient absorbed by the plant as potassium ion (K+). It helps in maintaining an anion-cation balance in cells and is involved in the protein synthesis, opening and closing of stomata, activation of many enzymes and in the maintenance of the turgidity of the cells.
So the correct answer is 'K'.

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