Swarm spores' are produced by

Options

A. Penicillium
B. Rhizopus
C. Rock weed
D. Chlamydomonas

Answer

To determine which organism produces "swarm spores," we need to analyze the options provided and their respective reproductive methods.

### Step-by-Step Solution:

1. **Understanding Swarm Spores**:
- Swarm spores are also known as zoospores. They are motile spores that possess flagella, which aid in their movement. This movement is crucial for reproduction in certain organisms.

2. **Analyzing the Options**:
- **Option 1: Penicillium**:
- Penicillium reproduces asexually through the formation of conidia, not swarm spores.
- **Option 2: Rhizopus**:
- Rhizopus reproduces through the formation of sporangia, which do not produce swarm spores.
- **Option 3: Rockweed**:
- Rockweed (a type of algae) produces heterogametes but is not specifically known for producing swarm spores.
- **Option 4: Chlamydomonas**:
- Chlamydomonas is a green alga that can reproduce both asexually and sexually. During sexual reproduction, it produces zoospores, which are referred to as swarm spores.

3. **Conclusion**:
- After analyzing the reproductive methods of each organism, we find that Chlamydomonas is the only one that produces swarm spores (zoospores) during its sexual reproduction phase.

### Final Answer:
- **Swarm spores are produced by Chlamydomonas.**

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