Which of the following is NOT a macronutrient?

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Prepare for the Agriscience Foundation CFE Exam. Study effectively with multiple choice questions, each enriched with hints and explanations to boost your knowledge. Ace your exam with confidence!

Multiple Choice

Which of the following is NOT a macronutrient?

Explanation:
In plant nutrition, macronutrients are elements the plant needs in large amounts to support growth and metabolic processes, while micronutrients are required only in trace amounts but are still essential. The primary macronutrients—needed in the biggest quantities—are nitrogen, phosphorus, and potassium. Calcium, magnesium, and sulfur are also considered macronutrients in the broader sense. Iron, on the other hand, is a micronutrient; it’s essential for processes like chlorophyll synthesis and electron transport but is required in much smaller amounts. So the element that is not a macronutrient is iron.

In plant nutrition, macronutrients are elements the plant needs in large amounts to support growth and metabolic processes, while micronutrients are required only in trace amounts but are still essential. The primary macronutrients—needed in the biggest quantities—are nitrogen, phosphorus, and potassium. Calcium, magnesium, and sulfur are also considered macronutrients in the broader sense. Iron, on the other hand, is a micronutrient; it’s essential for processes like chlorophyll synthesis and electron transport but is required in much smaller amounts.

So the element that is not a macronutrient is iron.

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