Which of the following is a brown algae ?

Options

A. Sargassum
B. Volvox
C. Ulothrix
D. Chara

Answer

To determine which of the given options is a brown algae, we can follow these steps:

### Step-by-Step Solution:

1. **Understand the Classification of Algae**: Algae are classified into different groups based on their pigments. The main types are:
- **Green Algae (Chlorophyceae)**: Contain chlorophyll, which gives them a green color.
- **Red Algae (Rhodophyceae)**: Contain red pigments (carotenoids).
- **Brown Algae (Phaeophyceae)**: Contain brown pigments (also carotenoids).

2. **Review the Options Provided**: The options given are:
- Sargassum
- Volvox
- Ulothrix
- Chara

3. **Identify Each Option's Classification**:
- **Sargassum**: This is known to be a brown algae due to its carotenoid pigments.
- **Volvox**: This is a green algae, classified under Chlorophyceae.
- **Ulothrix**: This is also a green algae, classified under Chlorophyceae.
- **Chara**: This is yet another green algae, also classified under Chlorophyceae.

4. **Conclusion**: Among the options, Sargassum is the only one that is classified as a brown algae.

### Final Answer:
The brown algae among the options is **Sargassum**.

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