Anus is absent in

Options

A. Unio
B. Pheretima
C. Periplaneta
D. Fasciola

Answer

### Step-by-Step Solution:

1. **Understanding the Question**: The question asks which organism does not have an anus. This means we need to identify organisms from the given options that lack this structure.

2. **Analyzing the Options**:
- **Juno**: This is not a commonly recognized organism in the context of non-chordates.
- **Ferentima**: This is known as the earthworm, which has a complete digestive system with both a mouth and an anus.
- **Heliplanetum**: This is likely a misspelling or misinterpretation; however, if it refers to a mollusk or similar organism, it would also have both openings.
- **Fasciola**: This is known as the liver fluke, a type of trematode belonging to the phylum Platyhelminthes.

3. **Identifying the Correct Answer**:
- **Fasciola** (liver fluke) is a flatworm that has a single opening for its digestive system, which serves as both mouth and anus. Therefore, it does not have a separate anus.

4. **Conclusion**: The organism that lacks an anus from the given options is **Fasciola**.

### Final Answer:
**Fasciola** is the organism that does not have an anus.

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