Question

Which of the following is not an essential micronutrient?

• A. Boron
• B. Sodium
• C. Manganese
• D. Molybdenum

Answer 1

The correct option is B Sodium

Correct answer-No any given option is correct.

Micronutrients are those essential elements which are required by plants in small amounts, less than 10 m mole/kg of dry matter. They are mostly involved in the functioning of enzymes. Since, micronutrients are required in traces; they are also called trace elements. Micronutrients are eight in number - iron, manganese, copper, molybdenum, zinc, boron, chlorine and nickel. All these eight micronutrients are essential.