Which type of testis is present in ascaris ?

Options

A. Monorchic
B. Diorchic
C. Triorchic
D. Tetraorchic

Answer

To determine the type of testis present in Ascaris, we can follow these steps:

### Step-by-Step Solution:

1. **Identify the Organism**:
- Ascaris is a genus of parasitic nematodes, commonly known as roundworms. The scientific name for the common roundworm is Ascaris lumbricoides.

2. **Understand the Phylum**:
- Ascaris belongs to the phylum Nematoda, which includes various types of roundworms.

3. **Examine Male Reproductive System**:
- The male Ascaris has a specific reproductive structure. It consists of a single testis, which is a key characteristic for identifying the type of testis.

4. **Define Types of Testes**:
- The types of testes can be categorized based on the number of testes present:
- **Monorchic**: 1 testis
- **Diorchic**: 2 testes
- **Triarchic**: 3 testes
- **Tetraarchic**: 4 testes

5. **Conclude the Type of Testis**:
- Since the male Ascaris has only one testis, it is classified as **monorchic**.

### Final Answer:
The type of testis present in Ascaris is **monorchic**.

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