The pressure that prevails in cell due to number of substances dissolved in cell sap is

Options

A. Wall pressure
B. Turgor pressure
C. Osmotic pressure
D. Diffusion pressure.

Answer

To solve the question regarding the pressure that prevails in a cell due to the number of substances dissolved in cell sap, we can follow these steps:

### Step-by-Step Solution:

1. **Understanding the Concept of Pressure in Cells**:
- In plant cells, various substances are dissolved in the cell sap, which affects the pressure within the cell.

2. **Identifying Types of Pressure**:
- There are several types of pressure that can be present in cells:
- **Wall Pressure**: The pressure exerted by the cell wall against the cell contents.
- **Turgor Pressure**: The pressure of the cell contents against the cell wall, which helps maintain the cell's shape and rigidity.
- **Osmotic Pressure**: The pressure required to prevent the flow of water into a solution via osmosis. It is influenced by the concentration of solutes in the cell sap.
- **Diffusion Pressure**: The tendency of particles to spread out in a medium.

3. **Analyzing the Question**:
- The question specifically asks about the pressure that is a result of the number of substances dissolved in the cell sap. This indicates a relationship with solute concentration.

4. **Identifying the Correct Answer**:
- Among the options provided:
- **Wall Pressure** is not directly related to solute concentration.
- **Turgor Pressure** is influenced by osmotic pressure but is not the direct result of solute concentration.
- **Osmotic Pressure** is directly related to the concentration of solutes in the solution.
- **Diffusion Pressure** does not specifically relate to cell sap concentration.

5. **Conclusion**:
- The pressure that prevails in the cell due to the number of substances dissolved in the cell sap is known as **osmotic pressure**.

### Final Answer:
The correct answer is **C. Osmotic Pressure**.

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