Which among the following is not a characteristic feature of Ascaris?

Options

A. Endoparasite
B. Monogenic
C. Free living
D. Dioecious

Answer

To determine which among the following is not a characteristic feature of Ascaris, we will analyze each option provided:

1. **Ando Parasite**: Ascaris is indeed a parasite that resides in the small intestine of humans. It is classified as an endoparasite because it lives inside the host's body. This statement is true.

2. **Monogenic**: Ascaris does not require an intermediate host to complete its life cycle. It can complete its life cycle within a single host organism, which makes this statement true as well.

3. **Free Living**: Ascaris is not free-living; it is a parasitic organism that depends on its host for survival. This statement is false and is the characteristic that does not apply to Ascaris.

4. **Dioecious**: Ascaris exhibits sexual dimorphism, meaning that male and female individuals can be differentiated. This is a true characteristic of Ascaris.

Based on the analysis, the option that is not a characteristic feature of Ascaris is **option 3: Free Living**.

### Summary of Steps:
1. Identify the characteristics of Ascaris.
2. Analyze each option to determine if it is a feature of Ascaris.
3. Conclude which option is not a characteristic feature.