Partial mineral element is

Options

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

Answer

**Step-by-Step Solution:**

1. **Understanding the Question**: The question asks about the "partial mineral element." This term refers to a specific mineral element that is essential for plant growth and development but is not required in large quantities.

2. **Analyzing the Options**:
- **Option 1: Nitrogen (N)**: Nitrogen is a crucial element found in proteins and nucleic acids. It is present in plants in amounts ranging from 1-3% and plays a vital role in various metabolic processes. It is often considered a partial mineral element due to its essential role in plant nutrition.

- **Option 2: Phosphorus (P)**: Phosphorus is important for the formation of bones and teeth and is involved in energy transfer and the synthesis of nucleic acids. While it is essential, it is not typically classified as a "partial mineral element."

- **Option 3: Potassium (K)**: Potassium is an electrolyte that helps in muscle function and is essential for various physiological processes. Like phosphorus, it is essential but not primarily classified as a "partial mineral element."

- **Option 4: Sulfur (S)**: Sulfur is a nonmetal that is important for certain amino acids and proteins. It has low toxicity but is not typically referred to as a "partial mineral element."

3. **Identifying the Correct Answer**: After analyzing all the options, it is clear that nitrogen (N) is the mineral element that fits the definition of a "partial mineral element" due to its essential role in plant metabolism and its presence in smaller amounts compared to other minerals.

4. **Final Answer**: The partial mineral element is nitrogen (N).

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