What are micronutrients?

Micronutrients are indeed essential nutrients required in small quantities for the proper functioning of various biological processes in plants and other organisms. Unlike macronutrients, which are required in larger amounts and include elements such as nitrogen, phosphorus, and potassium, micronutrients such as iron, manganese, zinc, copper, molybdenum, and boron are needed in trace amounts. Despite their smaller quantities, micronutrients play critical roles in processes such as photosynthesis, enzyme function, and hormone production, contributing to overall plant health and growth.

The other choices do not accurately define micronutrients. Some options mention large quantities or specific functions like promoting growth only, which do not apply to the nature of micronutrients. Understanding the significance of micronutrients and their small required quantities is crucial for effective nutrient management and balanced fertilization in agriculture.