The layer of vacuole is

Options

A. plasmalemma
B. tonoplast
C. sarcolemma
D. cytoplasmic membrane

Answer

**Step-by-Step Solution:**

1. **Understanding the Question**: The question asks for the name of the layer that surrounds the vacuole in a cell.

2. **Identifying the Options**: The options provided are:
- Plasmalemma
- Tonoplast
- Sarcolemma
- Cytoplasmic membrane

3. **Analyzing Each Option**:
- **Plasmalemma**: This is another term for the cell membrane, which surrounds the entire cell, not just the vacuole. Thus, it cannot be the answer.
- **Tonoplast**: This is specifically the membrane that surrounds the vacuole and separates it from the cytoplasm. This is a strong candidate for the correct answer.
- **Sarcolemma**: This is the membrane that surrounds muscle fibers and is specialized for muscle cells. It does not relate to vacuoles, so it is not the answer.
- **Cytoplasmic Membrane**: This term is synonymous with plasmalemma and refers to the cell membrane. Therefore, it is not the answer.

4. **Conclusion**: After analyzing all the options, the only correct answer is **Tonoplast**, as it is the membrane that specifically surrounds the vacuole.

**Final Answer**: The layer of the vacuole is known as **Tonoplast**.

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