Cell wall shows
(a) impermeability
(b) semipermeability
(c) complete permeability
(d) differential permeability

Options

A. impermeability
B. semipermeability
C. complete permeability
D. differential permeability

Answer

To solve the question regarding the properties of the cell wall, we can follow these steps:

### Step-by-Step Solution:

1. **Understanding the Structure of the Cell Wall**:
- The cell wall is a rigid layer that surrounds the cell membrane. It is primarily found in plants, algae, and many prokaryotes like bacteria.

2. **Function of the Cell Wall**:
- The main function of the cell wall is to provide structural support and protection to the cell. It helps maintain the shape of the cell and prevents it from bursting in hypotonic environments.

3. **Permeability Characteristics**:
- The permeability of a cell wall is different from that of a cell membrane. The cell membrane is selectively permeable, meaning it allows certain substances to pass while blocking others.

4. **Types of Permeability**:
- **Impermeability**: This means that nothing can pass through, which is not true for the cell wall.
- **Semipermeability**: This allows some substances to pass while blocking others, which describes the cell membrane, not the cell wall.
- **Complete Permeability**: This means that all substances can pass freely through the structure.
- **Differential Permeability**: This allows certain substances to pass while others cannot, similar to semipermeability.

5. **Conclusion**:
- The cell wall is best described as having complete permeability because it allows the passage of all types of molecules, including water and other solutes, without restriction. Therefore, the correct answer is option (c) complete permeability.

### Final Answer:
(c) complete permeability