Mineral Nutrition Question 22

22. Which one of the following is a micronutrient for plants?

[1996]

(a) Calcium

(b) Magnesium

(c) Manganese

(d) Nitrogen

Show Answer

Answer : c

Hints & Solution

(c) Nutrients which are required in large amounts in functioning of 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 synthesis of chlorophyll. It is also required for activation of enzymes of respiration and nitrogen metabolism.