Cell wall is present in :-

Options

A. Plant cells
B. Prokaryotic cell
C. Algal cell
D. All the above

Answer

### Step-by-Step Solution:

1. **Understanding the Cell Wall**:
- The cell wall is a rigid layer that surrounds the cell membrane. It provides structural support and protection to the cell.

2. **Location of the Cell Wall**:
- The cell wall is located outside the plasma membrane, which is the innermost layer of the cell envelope.

3. **Identifying Organisms with Cell Walls**:
- **Plant Cells**: Plant cells have a cell wall made primarily of cellulose, which provides rigidity and strength.
- **Prokaryotic Cells**: Prokaryotic cells, such as bacteria, also possess a cell wall. The composition of the cell wall in bacteria is mainly peptidoglycan.
- **Fungi**: Fungal cells have a cell wall composed of chitin, which is different from that of plants and bacteria.
- **Algae**: Many types of algae also have cell walls, which can be made of various substances, including cellulose or silica.

4. **Evaluating the Options**:
- **Option 1: Plant Cell** - Correct, as plant cells have a cell wall.
- **Option 2: Prokaryotic Cell** - Correct, as prokaryotic cells (like bacteria) have a cell wall.
- **Option 3: Fungi** - Correct, as fungal cells have a cell wall.
- **Option 4: Algae** - Correct, as many algae have cell walls.

5. **Conclusion**:
- The cell wall is present in plant cells, prokaryotic cells (like bacteria), fungal cells, and many algal cells. Therefore, all the options provided in the question are correct.