Algin can be obtained from:-

Options

A. Rhodophyceae and chlorophyceae
B. Phaeophyceae & rhodopyceae
C. rhodophyceae only
D. phaeophyceae only

Answer

**Step-by-Step Solution:**

1. **Understanding Algin**: Algin is a hydrocolloid, which is a substance that can hold a large amount of water. It is commonly used in various food products and cosmetics to maintain consistency.

2. **Identifying the Source**: Algin is specifically derived from certain types of algae. To answer the question, we need to identify which group of algae produces algin.

3. **Classification of Algae**: Algae are classified into different groups, including:
- Chlorophyceae (green algae)
- Rhodophyceae (red algae)
- Pheophyceae (brown algae)

4. **Determining the Correct Group**: Among these groups, it is known that algin is obtained from Pheophyceae, which are the brown algae.

5. **Conclusion**: Therefore, the correct answer to the question "Algin can be obtained from:" is Pheophyceae (brown algae).

**Final Answer**: Algin can be obtained from Pheophyceae (brown algae).

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