The vacuole is lined by a membrane called

Options

A. tonoplast
B. jacket
C. cell membrane
D. tonoplasm

Answer

**Step-by-Step Solution:**

1. **Understanding Vacuoles**: Vacuoles are fluid-filled organelles found in cells. They can vary in size and are essential for various cellular functions.

2. **Membrane Structure**: Vacuoles are characterized by being enclosed by a membrane. This membrane is crucial for maintaining the internal environment of the vacuole.

3. **Identifying the Membrane**: The specific membrane that lines the vacuole is known as the tonoplast. It is a single-layered membrane that surrounds the vacuole.

4. **Function of the Tonoplast**: The tonoplast plays a significant role in osmoregulation, which is the process of maintaining the proper balance of water and solutes within the vacuole and the cell.

5. **Conclusion**: Therefore, the correct answer to the question "The vacuole is lined by a membrane called" is **tonoplast**.

---