Which one is not a trace element/micronutrient

Options

A. Mn
B. Cu
C. Mo
D. K

Answer

To determine which element is not a trace element or micronutrient, we can follow these steps:

1. **Understand the Categories of Nutrients**:
- There are 17 essential elements for plants, which are divided into two categories: macronutrients and micronutrients (or trace elements).
- Macronutrients are required in larger quantities, while micronutrients are needed in smaller amounts.

2. **Identify the Macronutrients**:
- The macronutrients include:
- Carbon (C)
- Hydrogen (H)
- Oxygen (O)
- Nitrogen (N)
- Phosphorus (P)
- Potassium (K)
- Calcium (Ca)
- Magnesium (Mg)
- Sulfur (S)

3. **Identify the Micronutrients**:
- The micronutrients (or trace elements) include:
- Iron (Fe)
- Manganese (Mn)
- Copper (Cu)
- Zinc (Zn)
- Boron (B)
- Molybdenum (Mo)
- Chlorine (Cl)
- Nickel (Ni)

4. **Analyze the Options Given**:
- From the question, we need to identify which of the provided options is a macronutrient.
- Among the options, if Potassium (K) is listed, we recognize it as a macronutrient.

5. **Conclusion**:
- Since Potassium is a macronutrient, it is not a trace element or micronutrient. Therefore, the answer to the question is Potassium.

**Final Answer**: Potassium is not a trace element/micronutrient.

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