Gas vacuoles are found in

Options

A. Blue green algae
B. Green and purple bacteria
C. Bacillus
D. More than one option is correct

Answer

**Step-by-Step Solution:**

1. **Understanding Gas Vacuoles:**
- Gas vacuoles are specialized structures found in certain microorganisms. They are aggregates of gas vesicles that help the organism maintain buoyancy in aquatic environments.

2. **Analyzing the Options:**
- **Option A: Blue Green Algae (Cyanobacteria)**
- Blue green algae, also known as cyanobacteria, are capable of photosynthesis and possess gas vacuoles that help them float in water. Thus, they do contain gas vacuoles.

- **Option B: Green and Purple Bacteria**
- Green and purple bacteria are also known to have gas vacuoles. These vacuoles assist them in floating and positioning themselves in optimal light conditions for photosynthesis. Therefore, they also contain gas vacuoles.

- **Option C: Bacillus**
- Bacillus is a genus of bacteria that can form endospores and some species have gas vacuoles. These gas vacuoles help them maintain buoyancy in their environment. Hence, Bacillus also contains gas vacuoles.

3. **Conclusion:**
- Since gas vacuoles are present in blue green algae, green and purple bacteria, and Bacillus, the correct answer is **Option D: More than one option is correct**.

**Final Answer: Option D - More than one option is correct.**

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