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Choose correct options w.r.t. Essential...

Choose correct options w.r.t. Essential elements for plant nutrition. (a) absolutely necessary for normal growth and reproduction. (b) Indirectly involved in plant metabolism. (c) All the essential elements are components of biomolecules. (d) The requirment of element is specific and cannot be replaceable by another element.

A

a & c

B

b & c

C

a & d

D

b & d

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