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Which of the following elements is a macronutrient?(a) Cu(b) Mn(c) Cl(d) MgI have been asked this question at a job interview.My doubt stems from Mineral Requirements of a Plant-2 in chapter Mineral Nutrition of Biology – Class 11

Answer»

The correct choice is (d) Mg

For explanation I would say: Mg is a macronutrient. Macronutrients consist of elements which are necessary for plant’s survival and are required in excess of 10 MMOLE Kg^-1. Mg is ABSORBED by plants in DIVALENT form. It is involved in the synthesis of DNA & RNA. Cu, Mn and Cl are micronutrients.



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