Motile zoospores are produced by

Options

A. Chlamydomonas
B. Penicillium
C. Bacillus
D. Amoeba

Answer

To solve the question "Motile zoospores are produced by," we will analyze the given options one by one.

### Step-by-Step Solution:

1. **Identify the Options**: The options provided are:
- A) Chlamydomonas
- B) Penicillium
- C) Bacillus
- D) Amoeba

2. **Analyze Chlamydomonas**:
- Chlamydomonas is a type of green algae that belongs to the Chlorophyceae class.
- It is known to produce motile zoospores that are biflagellated, meaning they have two flagella, which allow them to move.

3. **Analyze Penicillium**:
- Penicillium is a genus of fungi that reproduces asexually by producing non-motile spores called conidia.
- Since these spores are non-motile, Penicillium does not produce motile zoospores.

4. **Analyze Bacillus**:
- Bacillus is a genus of bacteria that forms spores.
- The spores produced by Bacillus are covered by a thick and tough outer layer, making them resistant to extreme environmental conditions.
- These spores are not motile and do not qualify as zoospores.

5. **Analyze Amoeba**:
- Amoeba reproduces asexually through processes like binary fission or multiple fission.
- It does not produce zoospores; instead, it divides to form new individuals.

6. **Conclusion**:
- After analyzing all the options, we find that the only organism that produces motile zoospores is **Chlamydomonas**.

### Final Answer:
The correct answer is **A) Chlamydomonas**.

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