Which group of nutrients is categorized as macronutrients?

The group of nutrients categorized as macronutrients includes Nitrogen, Potassium, and Phosphorus. These nutrients are essential for plant growth and are required in larger quantities compared to micronutrients. Macronutrients play critical roles in various physiological functions:

• Nitrogen is vital for the synthesis of amino acids, proteins, and nucleic acids, influencing plant growth and development.

• Potassium is involved in many physiological processes, including water regulation, enzyme activation, and the synthesis of proteins and starches.

• Phosphorus is crucial for energy transfer through ATP, root development, and the formation of nucleic acids.

The nutrients listed in the other choices (copper, manganese, zinc, iron, boron, and chlorine) are classified as micronutrients. While essential for plant health, they are required in smaller amounts than macronutrients and primarily function in specific biochemical processes rather than overall growth. Calcium, while a macronutrient, is not included in the correct set of three alongside the other two.