When a cell is placed in the solution of different concentration then , the cell swells in.... and shrink in .... respectively.

Options

A. hypotonic solution and isotonic solution
B. hypotonic solution and hypertonic solution
C. isotonic solution and hypertonic solution hypertonic solution and hypotonic solution
D. hypertonic solution and hypotonic solution

Answer

To solve the question regarding the behavior of a cell when placed in solutions of different concentrations, we can break it down into the following steps:

### Step-by-Step Solution:

1. **Understanding Solution Types**:
- There are three types of solutions based on solute concentration: hypotonic, hypertonic, and isotonic.
- A **hypotonic solution** has a lower concentration of solutes compared to the cell's interior.
- A **hypertonic solution** has a higher concentration of solutes compared to the cell's interior.
- An **isotonic solution** has an equal concentration of solutes compared to the cell's interior.

2. **Effect of Hypotonic Solution**:
- When a cell is placed in a hypotonic solution, water moves into the cell due to osmosis (the movement of water from an area of lower solute concentration to an area of higher solute concentration).
- This influx of water causes the cell to swell.

3. **Effect of Hypertonic Solution**:
- When a cell is placed in a hypertonic solution, water moves out of the cell into the surrounding solution.
- This occurs because the surrounding solution has a higher solute concentration, leading to the movement of water from the area of higher water concentration (inside the cell) to the area of lower water concentration (outside the cell).
- As a result, the cell shrinks.

4. **Final Answer**:
- Therefore, the cell swells in a **hypotonic solution** and shrinks in a **hypertonic solution**.

### Summary of the Answer:
- The cell swells in **hypotonic solution** and shrinks in **hypertonic solution**.