Which of the following roles is not a criterion for essentiality of an element?
A. In its absence, plants do not set seeds
B. Irreplaceable by another element
C. Indirectly involved in the metabolism of the plant
D. Absolutely necessary for metabolism
Answer:C
Which of the following roles is not a criterion for essentiality of an element?
A. In its absence, plants do not set seeds B. Irreplaceable by another element C. Indirectly involved in the metabolism of the plant D. Absolutely necessary for metabolism