1.

Differentiate between Macro-nutrients and  Micro-nutrients.

Answer»
Macro-nutrientsMicro-nutrients
(i) Macro-nutrients are present in plant tissues in concentrations of 1 to 10 mg per gram of dry matter.Micro-nutrients are needed in very low  amounts : 0.1 mg per gram of dry matter.
(ii) C, H, O, N, P, K, S, Ca, Mg.Fe, Mn, Cu, Mo, Zn, B, Cl, Si.



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