Multiple choice

All the following are macronutrients, except

  1. calcium

  2. phosphorus

  3. iron

  4. sulphur
Reveal answer Fill a bubble to check yourself
C Correct answer
Explanation

Calcium, phosphorus, and sulfur are all macronutrients required by plants in relatively large amounts. Iron is a micronutrient, needed in much smaller quantities, making it the correct answer as the exception.

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