Which is absent in Leech

Options

A. Parapodia
B. Ocelli
C. Clitellum
D. Salivary glands

Answer

### Step-by-Step Solution:

1. **Identify the Organism**: The question pertains to leeches, which are members of the phylum Annelida.

2. **Understand the Structures**: The options provided are:
- Parapodia
- Ocelli
- Clitellum
- Salivary Gland

3. **Analyze Each Structure**:
- **Parapodia**: These are lateral extensions found in many annelids that aid in locomotion. However, leeches do not possess parapodia.
- **Ocelli**: These are simple eyes or light-sensitive organs that can be present in leeches.
- **Clitellum**: This is a thickened, glandular section of the body wall in certain annelids, including leeches, and is involved in reproduction.
- **Salivary Gland**: These glands are present in leeches and secrete substances that help in feeding.

4. **Determine the Absence**: From the analysis, it is clear that the structure that is absent in leeches is **parapodia**.

5. **Conclusion**: Therefore, the correct answer to the question "Which is absent in leech?" is **Parapodia**.