alleryStart learning →Which element is classed as a micronutrient?
ACalcium
BSulfur
CMagnesium
DManganese
Answer & Solution
Correct answer: D. Manganese
1. Micronutrients, also called trace elements, are needed only in very small quantities.
2. They include boron, chlorine, manganese, iron, zinc, copper, molybdenum, nickel, silicon and sodium.
3. Manganese appears on that list, so it is the micronutrient here.
4. Calcium, sulfur and magnesium are all macronutrients, needed in larger amounts.
_Source: OpenStax Biology (1st ed., CC BY 4.0), Ch 31 "Soil and Plant Nutrition", section 31.1 Nutritional Requirements of Plants_
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