Non pathogenic, bisexual nematode is

Options

A. Caenorhabditis elegans
B. Loa loa
C. Enterobius vermicularis
D. Ancylostoma duodenale

Answer

To solve the question of identifying the non-pathogenic, bisexual nematode from the given options, we can follow these steps:

### Step-by-Step Solution:

1. **Understand the Question**: We need to identify a nematode that is both non-pathogenic and bisexual from the options provided.

2. **Analyze the Options**:
- **Option A: Synorhabditis elegans**: This is a well-known model organism in molecular genetics and developmental biology. It is free-living, non-pathogenic, and bisexual.
- **Option B: Loa loa**: This is a parasitic nematode known as the eye worm, which causes Loiasis (African eye worm disease). It is pathogenic.
- **Option C: Enterobius vermicularis**: Known as the pinworm, this is also a parasitic worm that infects the intestines and is pathogenic.
- **Option D: Ancylostoma duodenale**: This is a hookworm that lives in the small intestine and is also pathogenic.

3. **Identify the Correct Answer**: From the analysis, Synorhabditis elegans is the only option that is non-pathogenic and bisexual. The other three options are all pathogenic nematodes.

4. **Conclusion**: Therefore, the correct answer to the question is **Synorhabditis elegans**.

### Final Answer:
The non-pathogenic, bisexual nematode is **Synorhabditis elegans**.

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