Which one of the following is a micronutrient for plants?

Step-by-step solution

Nutrients which are required in large amounts and functioning of the plant are known as macronutrients eg. Ca, Mg, N. Nutrients required in trace amounts are known as micronutrients. Manganese is a micronutrient for plants essential for the synthesis of chlorophyll. It is also required for activation of enzymes of respiration and nitrogen metabolism.