The photosynthetic pigment found in Sargassum is:

Options

A. carotene
B. xanthophyll
C. phycocyanin
D. fucoxanthin

Answer

**Step-by-Step Solution:**

1. **Understanding the Question**: The question asks for the specific photosynthetic pigment found in Sargassum, which is a type of brown algae.

2. **Identifying Photosynthetic Pigments**: Photosynthetic pigments are essential for the process of photosynthesis, as they capture light energy. Common pigments include chlorophyll, carotene, xanthophyll, phycocyanin, and fucoxanthin.

3. **Analyzing the Options**:
- **Carotene**: This pigment is typically found in colorful fruits and vegetables, such as carrots and beets. It is not specific to Sargassum.
- **Xanthophyll**: This pigment is found in young leaves and is not primarily associated with Sargassum.
- **Phycocyanin**: This pigment is found in cyanobacteria and some algae, but it is not the main pigment in Sargassum.
- **Fucoxanthin**: This is a specific pigment found in brown algae, including Sargassum. It plays a significant role in photosynthesis in these organisms.

4. **Conclusion**: Based on the analysis, the correct answer is **fucoxanthin**, as it is the photosynthetic pigment primarily associated with Sargassum.

**Final Answer**: The photosynthetic pigment found in Sargassum is **fucoxanthin**.

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