A cell will become fully turgid if it is placed in

Options

A. Hypotonic solution
B. Isotonic solution
C. Hypertonic solution
D. All the above

Answer

To determine the condition under which a cell becomes fully turgid, we need to understand the concepts of different types of solutions: hypotonic, isotonic, and hypertonic.

### Step-by-Step Solution:

1. **Understanding Turgidity**: Turgidity refers to the state of a cell when it is swollen and firm due to the pressure of the fluid inside the vacuole against the cell wall. This occurs when a cell takes in water.

2. **Types of Solutions**:
- **Hypotonic Solution**: This is a solution that has a lower concentration of solutes compared to the inside of the cell. When a cell is placed in a hypotonic solution, water moves into the cell through osmosis, causing it to swell and become turgid.
- **Isotonic Solution**: In this case, the concentration of solutes is equal inside and outside the cell. There is no net movement of water, so the cell remains in its normal state but does not become turgid.
- **Hypertonic Solution**: This solution has a higher concentration of solutes compared to the inside of the cell. When a cell is placed in a hypertonic solution, water moves out of the cell, causing it to shrink and lose turgidity.

3. **Conclusion**: A cell will become fully turgid if it is placed in a hypotonic solution, as this allows water to enter the cell, increasing its volume and pressure against the cell wall.

4. **Final Answer**: Therefore, the correct answer is **hypotonic solution**.