Which of the following is NOT a criterion for | vedclass

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(C) According to Arnon and Stout $(1939)$,the criteria for essentiality of an element are:$1$. The plant must be unable to complete its life cycle or

Vedclass · Accepted Answer

The requirement of the element must be specific and replaceable by another element.

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(C) According to Arnon and Stout $(1939)$,the criteria for essentiality of an element are:$1$. The plant must be unable to complete its life cycle or set the seeds in the absence of the element.$2$. The requirement of the element must be specific and not replaceable by another element. In other words,deficiency of any one element cannot be met by supplying some other element.$3$. The element must be directly involved in the metabolism of the plant.Option $C$ states that the requirement is 'replaceable',which contradicts the second criterion. Therefore,it is not a criterion for essential elements.

Which of the following is $NOT$ a criterion for essential elements?

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