Multiple choice

Among the following plant nutrients, which is a macro-nutrient?

  1. Manganese

  2. Calcium

  3. Chlorine

  4. Copper

Reveal answer Fill a bubble to check yourself
B Correct answer
Explanation

Macronutrients are elements plants need in large amounts. Primary macronutrients are N, P, K. Secondary macronutrients include Ca (calcium), Mg, and S. Manganese, chlorine, and copper are all micronutrients needed in trace amounts.