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  4. Which one of the following is not a micronutrient for plants?

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Q. Which one of the following is not a micronutrient for plants?

J & K CETJ & K CET 2015Mineral Nutrition

Solution:

Magnesium is a macro nutrient. Micro nutrients are essential elements that are needed by plants in small amount. They include $Fe,\, Cu,\, B,\, Mo,\, Mn,\,Cl,$ and $Ni$. Macro nutrients, on the other hand, are those essential elements that are required by plants in larger amount. The examples include $C,\,H,\, O,\, N,\,S,\, P,\,K,\, Ca$ and $Mg$.