Sperm of Ascaris is

Options

A. Biflagellate
B. Amoeboid
C. Spindle shaped
D. Ciliated

Answer

**Step-by-Step Solution:**

1. **Understanding Ascaris**: Ascaris is a genus of parasitic roundworms, commonly known as intestinal roundworms. They exhibit sexual dimorphism, meaning there are distinct male and female organisms.

2. **Sperm Characteristics**: The sperm of Ascaris is notable for its ability to move. Unlike many other sperm types that are typically flagellated, Ascaris sperm exhibits a unique mode of movement.

3. **Movement Mechanism**: Ascaris sperm can crawl and extend in a manner similar to amoebas, which use pseudopodia (false feet) for movement. This crawling ability allows the sperm to navigate through the reproductive tract.

4. **Amoeboid Nature**: The sperm of Ascaris is described as "amoeboid," meaning it can change shape and extend its body to facilitate movement, much like amoeba does when it encounters food.

5. **Major Sperm Protein**: A unique feature of Ascaris sperm is the presence of Major Sperm Protein (MSP), which is specific to Ascaris and contributes to its amoeboid movement.

6. **Conclusion**: Based on the characteristics discussed, the correct description of Ascaris sperm is that they are amoeboid in nature.

**Final Answer**: The sperm of Ascaris is amoeboid.

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