Question

Which one of the following elements is not an essential micronutrient for plant growth?

• A. Ca
• B. Mn
• C. Zn
• D. Cu

Answer 1

The correct option is A Ca

Plants require seventeen essential mineral elements which can be grouped into two classes based on the amount required-

Macronutrients (required in large amount) and micronutrient (required in small amounts).

The essential macronutrients are carbon, hydrogen, oxygen, nitrogen, phosphorous, potassium, sulphur, magnesium, calcium and essential micronutrients are iron, molybdenum, boron, chlorine, copper, zinc, nickel and manganese.