Question

Which of the following elements is a macronutrient?

• A. Cu
• B. Mn
• C. Cl
• D. Mg

Answer 1

Answer:

D. Mg

• 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.