Green alga which can be used as an article of food due to its very high nutrient value is

Options

A. Chlamydomonas
B. Chlorella
C. Ulothrix
D. Volvox.

Answer

**Step-by-Step Solution:**

1. **Identify the Question**: The question asks for a green alga that can be used as food due to its high nutrient value.

2. **Analyze the Options**: The options provided are:
- Chlamydomonas
- Chlorella
- Eulothrix
- Volvox

3. **Evaluate Each Option**:
- **Chlamydomonas**: This is a unicellular green alga often used as a model organism in molecular biology but not primarily known for its nutritional value.
- **Chlorella**: This is a unicellular green alga that is highly nutritious and is known for its high protein content. It is used as a food supplement, even by space travelers.
- **Eulothrix**: This alga is used in aquaculture to cover rice and fish but is not primarily recognized for its nutrient value as food.
- **Volvox**: This is a colonial green alga that can cause algal blooms but is not used as a food source.

4. **Select the Correct Answer**: Based on the analysis, **Chlorella** is the green alga that is recognized for its very high nutrient value and is used as an article of food.

5. **Conclusion**: The green alga which can be used as an article of food due to its very high nutrient value is **Chlorella**.

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