Which statement best describes micronutrients?

• A. Used by plants in relatively large amounts.
• B. Not essential for plant growth.
• C. Used by plants in relatively small amounts.
• D. Only available in organic form.

Answer: (C)

Micronutrients are nutrients used by plants in relatively small amounts, yet they are essential for key processes like enzyme function and metabolism. While plants require these minerals, they do so in trace quantities compared with macronutrients such as nitrogen, phosphorus, and potassium. Examples include iron, manganese, zinc, copper, boron, molybdenum, chlorine, and nickel. Because their need is small, the correct description emphasizes that their role is in tiny amounts, not large ones, and they are not limited to organic forms or nonessential. Deficiencies can occur when soil conditions or pH limit availability, leading to characteristic symptoms that guide management.