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, we need to understand the behavior of cells when they are placed in solutions of different concentrations. The key terms to focus on are hypotonic, isotonic, and hypertonic solutions.

### Step-by-Step Solution:

1. **Understanding Solution Types**:
- **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, causing it to swell.
- **Isotonic Solution**: This solution has the same concentration of solutes as the inside of the cell. In this case, there is no net movement of water, and the cell remains the same size.
- **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.

2. **Analyzing the Question**:
- The question asks when a cell swells and when it shrinks.
- From our understanding of the types of solutions:
- A cell swells in a **hypotonic solution** (water enters the cell).
- A cell shrinks in a **hypertonic solution** (water exits the cell).

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

### Answer:
The cell swells in **hypotonic solution** and shrinks in **hypertonic solution** respectively.

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