Most abundant cation in plant vacuole is

Options

A. Zn
B. Cu
C. Ca
D. K

Answer

**Step-by-Step Solution:**

1. **Understanding the Question**: The question asks for the most abundant cation found in plant vacuoles. A cation is a positively charged ion.

2. **Reviewing the Options**: The options provided are Zinc, Copper, Calcium, and Potassium. We need to evaluate which of these is most prevalent in plant vacuoles.

3. **Analyzing Each Option**:
- **Zinc (Zn)**: While zinc is an essential micronutrient for plants, it is not the most abundant cation in vacuoles.
- **Copper (Cu)**: Copper is also a micronutrient and is important for various plant functions, but it is not abundant in vacuoles.
- **Calcium (Ca)**: Calcium plays a crucial role in plant structure and signaling but is not the most abundant cation in vacuoles.
- **Potassium (K)**: Potassium is known to be a major cation in plant cells, particularly in vacuoles, where it helps maintain osmotic balance and is involved in various physiological processes.

4. **Conclusion**: Based on the analysis, potassium is identified as the most abundant cation in plant vacuoles. It plays critical roles in plant growth, including the regulation of stomatal opening and closing, and maintaining ionic balance.

5. **Final Answer**: The correct answer is Potassium (Option D).

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