Who proposed the criteria for the essentialit | vedclass

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(D) The criteria for the essentiality of mineral elements were proposed by $D.L. Arnon$ in $1939$.According to these criteria,an element is considered

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$D$.$L$. Arnon

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(D) The criteria for the essentiality of mineral elements were proposed by $D.L. Arnon$ in $1939$.According to these criteria,an element is considered essential if:$1$. The plant is unable to complete its life cycle in the absence of the element.$2$. The element is specific and cannot be replaced by another element.$3$. The element is directly involved in the metabolism of the plant.

Who proposed the criteria for the essentiality of mineral elements?

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