The lips of Ascaris are

Options

A. denticulate
B. cartilaginous
C. smooth
D. bony

Answer

To answer the question regarding the lips of Ascaris, we can follow these steps:

### Step-by-Step Solution:

1. **Understanding Ascaris**: Ascaris is a genus of parasitic roundworms, commonly known as intestinal roundworms. They are known for their elongated, cylindrical bodies.

2. **Location of the Mouth**: The mouth of Ascaris is located at the anterior end of its body. It is described as a triradiate aperture, meaning it has three distinct openings or lobes.

3. **Structure of the Lips**: The mouth of Ascaris is guarded by three lips. Specifically, there is one dorsal lip and two ventro-ventral lips.

4. **Characteristics of the Lips**: The lips of Ascaris are not smooth; instead, they have numerous small teeth present on them. This feature is significant in identifying the nature of the lips.

5. **Terminology**: The presence of these small teeth on the lips is referred to as a "denticulate condition." This term indicates that the lips are not smooth but have a serrated or tooth-like structure.

6. **Conclusion**: Based on the characteristics described, the correct answer to the question is that the lips of Ascaris are "denticulate."

### Final Answer:
The lips of Ascaris are denticulate (Option A).

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