Which one of the following is called as partial mineral element?

Options

A. P
B. N
C. S
D. K

Answer

**Step-by-Step Solution:**

1. **Understanding the Question**: The question asks for the identification of a mineral element that is referred to as a "partial mineral element."

2. **Identifying the Options**: The options provided are:
- Potassium
- Nitrogen
- Sulfur
- Phosphorus

3. **Defining Partial Mineral Elements**: Partial mineral elements are those that are essential for plant growth but are not required in large quantities compared to macronutrients. They play significant roles in various physiological processes.

4. **Analyzing Each Option**:
- **Potassium**: A macronutrient essential for various plant functions, including enzyme activation and osmoregulation.
- **Nitrogen**: A crucial component of amino acids, proteins, and nucleic acids. It is often referred to as a partial mineral element because it is needed in moderate amounts (1-3% of the plant's dry weight).
- **Sulfur**: Important for protein synthesis and enzyme function, but it is not typically classified as a partial mineral element.
- **Phosphorus**: Essential for energy transfer (ATP) and nucleic acids, but also considered a macronutrient.

5. **Conclusion**: Based on the analysis, nitrogen is identified as the partial mineral element due to its moderate requirement and significant role in plant metabolism.

6. **Final Answer**: The correct answer is **Nitrogen**.

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