Which one of the following elements is not an essential micronutrient for plant growth?

Which one of the following elements is not an essential micro-nutrient for plant growth?

Options

(a) Zn
(b) Cu
(c) Ca
(d) Mn

Correct Answer:

Ca

Explanation:

Essential micro elements are Fe, Mn, Zn, B, Cu, Mo and essential macro nutrients are C,H,N,P,S,Ca,K,Mg.

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