Question

Which of the following statements is correct with respect to the criteria for essentiality of an element?

(I) The element must be absolutely necessary for supporting normal growth and reproduction.

(II) Elements cannot be replaced by another element during its deficiency.

(III) The element must be directly involved in the metabolism of the plant.

(IV) Role of essential elements and their deficiency symptoms can be studied.

(V) The requirement of the element must be specific and not replaceable by another element.

• A. (II) (III) (IV)
• B. (I) (II) (V)
• C. (I) (III)
• D. (I) (II) (III) (IV)

Answer 1

The correct option is B (I) (II) (V)

Following statements are correct with respect to the critera for essentiality of element.

(I) The element must be absolutely necessary for supporting normal growth and reproduction.

(II) Elements cannot be replaced by another element during its deficiency.

(V) The requirement of the element must be specific and not replaceable by another element.