A cell wall material present only in blue green algea and bacteria is

Options

A. Muramic acid Cellulose
B. Cellulose
C. Chitin
D. Pectin

Answer

To answer the question about the cell wall material present only in blue-green algae and bacteria, we can follow these steps:

### Step-by-Step Solution:

1. **Identify the Organisms**: Recognize that blue-green algae are also known as cyanobacteria, and they share similarities with bacteria in terms of cellular structure.

2. **Understand Cell Wall Composition**: Both blue-green algae and bacteria have cell walls that are distinct from those of plants and fungi.

3. **Analyze the Options**:
- **Muramic Acid**: This is a unique component found in the cell walls of bacteria and cyanobacteria. It is part of the peptidoglycan layer, which is characteristic of these organisms.
- **Cellulose**: This is a polysaccharide found in the cell walls of plants and some algae, but not in bacteria or cyanobacteria.
- **Chitin**: This is found in the exoskeletons of arthropods and in the cell walls of fungi, not in bacteria or cyanobacteria.
- **Pectin**: This is primarily found in the cell walls of terrestrial plants, particularly in the middle lamella, and is not present in bacteria or cyanobacteria.

4. **Conclusion**: Based on the analysis, muramic acid is the only cell wall material that is present in both blue-green algae and bacteria.

5. **Final Answer**: The correct answer is **Muramic Acid**.