What are macro-nutrients, and why are they called macronutrients?

Ans:

Macro-nutrients are the fundamental elements that are used by plants in more quantity. Macro-nutrients needed by the plants are

• Macro-nutrients as the constituent of protoplasm.
• Phosphorus, Nitrogen, and Sulphur are present in proteins.
• Calcium exists in the cell wall.
• Magnesium is a significant component of chlorophyll.