GS PrelimsScience and TechnologyGeneral Science1996

Which one of the following is not an essential micronutrient for plants?

Boron

Zinc

Sodium

Copper

Correct Answer: Option C

Explanation

1. Essential micronutrients for plants are elements required in small quantities for proper growth and development. 2. Boron (B), Zinc (Zn), and Copper (Cu) are well-established essential micronutrients for higher plants. 3. Sodium (Na), while essential for certain types of plants (like C4 plants) and beneficial for others, is not considered a universally essential micronutrient for all plants in the same way as B, Zn, and Cu are. 4. Therefore, Sodium is the element listed that is generally not considered an essential micronutrient for plants.

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