An element must be considered essential,whenI | vedclass

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(D) The criteria for essentiality of an element are as follows:$(i)$ The element must be absolutely necessary for supporting normal growth and reprodu

Vedclass · Accepted Answer

$I, II$ and $III$

Vedclass · Answer

(D) The criteria for essentiality of an element are as follows:$(i)$ The element must be absolutely necessary for supporting normal growth and reproduction. In the absence of the element,the plants do not complete their life cycle or set the seeds.$(ii)$ The requirement of the element must be specific and not replaceable by any other element. In other words,deficiency of any one element cannot be met by supplying some other element.$(iii)$ The element must be directly involved in the metabolism of the plant.Since all three statements ($I, II,$ and $III$) define the criteria for essentiality of mineral elements,the correct answer is $I, II$ and $III$.

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