[Campbell Biology P.859] Which statement accurately differentiates between macronutrients an... | Practice Question
Which statement accurately differentiates between macronutrients and micronutrients in plants?
A: Macronutrients are needed in tiny quantities and function as enzyme cofactors, while micronutrients are required in large amounts for structural components.
B: Carbon, oxygen, and hydrogen are examples of macronutrients, whereas iron, zinc, and molybdenum are micronutrients.
C: Micronutrients, like nitrogen, are the major components of organic compounds, while macronutrients are primarily involved in enzymatic reactions.
D: Macronutrients are typically mobile within the plant, showing symptoms in older leaves first, while micronutrients are immobile.
Explanation
The text states that macronutrients are required in large amounts and lists Carbon, Oxygen, Hydrogen, Nitrogen, Phosphorus, Sulfur, Potassium, Calcium, and Magnesium as examples. Micronutrients are needed in tiny quantities, with examples including Chlorine, Iron, Manganese, Boron, Zinc, Copper, Nickel, Molybdenum, and Sodium. Option B correctly categorizes these examples.