Which one of the following is not an essential micronutrient for plants?
- ABoron
- BZinc
- CSodiumCorrect
- DCopper
Explanation
Plants require seventeen essential elements for their growth and development. These are divided into macronutrients and micronutrients based on the quantity required.
Micronutrients are needed in very small amounts and include iron, manganese, copper, molybdenum, zinc, boron, chlorine, and nickel.
Sodium is considered a beneficial element for some specific plants, such as certain halophytes or C4 plants like saltbush, but it is not classified as an essential nutrient for all plants to complete their life cycle. Therefore, among the given options, sodium is not an essential micronutrient.
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