If the concentration of external solution is more than the cytoplasm, the solution is known as :

Options

A. Hypertonic
B. Isotomic
C. Hypotonic
D. None

Answer

To solve the question, "If the concentration of external solution is more than the cytoplasm, the solution is known as:", we can follow these steps:

### Step-by-Step Solution:

1. **Understand the Terms**:
- **Hypertonic**: A solution with a higher concentration of solutes compared to another solution.
- **Hypotonic**: A solution with a lower concentration of solutes compared to another solution.
- **Isotonic**: A solution with an equal concentration of solutes compared to another solution.

2. **Identify the Given Condition**:
- The question states that the concentration of the external solution is more than that of the cytoplasm. This means that there are more solutes in the external solution compared to the cytoplasm of the cell.

3. **Apply the Definition**:
- Since the external solution has a higher concentration of solutes, it is classified as a **hypertonic solution**. In this scenario, water will move out of the cell towards the external solution, leading to the cell losing water.

4. **Consequences of a Hypertonic Solution**:
- When a cell is placed in a hypertonic solution, it will undergo a process called **plasmolysis**, where the cell shrinks as water exits the cell.

5. **Conclusion**:
- Therefore, the correct answer to the question is that the external solution is known as **hypertonic**.

### Final Answer:
The solution is known as **hypertonic**.

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