Question

In plant nutrition elements are classified as major or minor depending on

• A. Their availability in the soil.
• B. Their relative production in the ash obtained after burning the plants.
• C. Their relative amounts required by the plants.
• D. Their relative importance in plant growth.

Answer 1

Answer: (C)

Their relative amounts required by the plants.

The essential mineral nutrients required by plants can be macronutrients, which are required in large quantity in excess of 10 millimoles per kg dry matter of plant. Micronutrients are required in small quantity i.e., less than 10 millimoles per kg dry matter of plant. Thus, the correct answer is option C.