Multiple choice Which of the following is not a macronutrient that is present in a plant? Potassium Calcium Magnesium Chlorine Sulphur Reveal answer Fill a bubble to check yourself D Correct answer Explanation This is the correct option. Chlorine is not a macronutrient that is present in a plant. It is a micronutrient that is present in a small quantity in a plant. Sulphur is a macronutrient that is present in a plant. Thus, it is a wrong option.