The number of segments in Hirudinaria is
(a) 105
(b) 53
(c) 33
(d) 23

Options

A. 105
B. 53
C. 33
D. 23

Answer

To determine the number of segments in Hirudinaria, we can follow these steps:

### Step-by-Step Solution:

1. **Identify the Organism**: Recognize that Hirudinaria is commonly known as the Indian leech.

2. **Understand the Body Structure**: Note that Hirudinaria has a segmented body, which is characteristic of members of the phylum Annelida.

3. **Define Segments**: In annelids, the segments are referred to as 'metamers'. Each segment plays a role in the overall structure and function of the organism.

4. **Research the Number of Segments**: Based on biological studies and literature, it is established that Hirudinaria has a total of 33 segments (metamers).

5. **Select the Correct Option**: Given the options:
- (a) 105
- (b) 53
- (c) 33
- (d) 23
The correct answer is (c) 33.

### Final Answer:
The number of segments in Hirudinaria is **33** (Option C).

---