Which of the following is a flagellated algae?

Options

A. Chlamydomonas
B. Ulothrix
C. Saccharomyces
D. Agaricus

Answer

To determine which of the following is a flagellated algae, we can follow these steps:

### Step 1: Understand Flagellated Algae
Flagellated algae are types of algae that possess flagella, which are whip-like structures that aid in movement. Common groups of flagellated algae include certain green algae and brown algae.

### Step 2: Identify the Options
The options provided in the question need to be analyzed. The options are:
1. Chlamydomonas
2. Eulothrix
3. Saccharomyces
4. Agaricus

### Step 3: Analyze Each Option
- **Chlamydomonas**: This is a type of green algae belonging to the group Chlorophyceae. It is flagellated, meaning it has flagella for movement. Thus, this option is correct.

- **Eulothrix**: This is also a green algae but it is non-flagellated. Therefore, this option is incorrect.

- **Saccharomyces**: This is a genus of fungi, specifically yeast. It does not belong to the algae category, so this option is incorrect.

- **Agaricus**: This is another genus of fungi, commonly known as mushrooms. Like Saccharomyces, it is not an algae, making this option incorrect as well.

### Step 4: Conclusion
Based on the analysis, the only flagellated algae among the given options is **Chlamydomonas**.

### Final Answer
The flagellated algae from the options provided is **Chlamydomonas**.

---