Agar - Agar is present in the cell wall of

Options

A. Brown algae
B. Red algae
C. Green algae
D. All the above

Answer

**Step-by-Step Solution:**

1. **Understanding Agar-Agar**: Agar-Agar is a jelly-like substance that is primarily composed of polysaccharides. It is derived from certain species of algae.

2. **Identifying the Source**: The specific source of Agar-Agar is red algae. This means that Agar-Agar is extracted from the cell walls of these organisms.

3. **Examining Other Algal Types**: To ensure clarity, we can look at the cell wall compositions of other types of algae:
- **Brown Algae**: The cell walls of brown algae contain cellulose and algin.
- **Green Algae**: The cell walls of green algae primarily consist of cellulose.

4. **Conclusion**: Since Agar-Agar is specifically found in the cell walls of red algae, we can conclude that the correct answer to the question is "red algae".

**Final Answer**: Agar-Agar is present in the cell wall of red algae.

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