Testes of cockroach are present in abdomen at 

Options

A. dorsal side of 4th to 6th segment
B. ventral side of 4-6th segments
C. lateral sides of 4th to 6th abdominal segments
D. all the above

Answer

To answer the question regarding the location of the testes in a cockroach, we can follow these steps:

### Step-by-Step Solution:

1. **Understand the Anatomy of Cockroach**:
- Cockroaches are dioecious, meaning they have separate male and female individuals. This is important as it indicates that male cockroaches possess specific reproductive organs.

2. **Identify the Location of Testes**:
- The testes in male cockroaches are located in the abdomen. Specifically, they are situated in segments 4 to 6 of the cockroach's body.

3. **Determine the Orientation**:
- The testes are found on the dorsal side of the cockroach. The dorsal side refers to the back side of the organism, which is opposite to the ventral side (the belly).

4. **Evaluate the Options**:
- The question provides four options regarding the location of the testes:
- Dorsal side of 4th to 6th segment
- Ventral side of 4th to 6th segment
- Lateral side of 4th to 6th segment
- All of the above
- Based on the anatomical knowledge, the correct answer is that the testes are located on the dorsal side of the 4th to 6th segments.

5. **Conclusion**:
- Therefore, the correct answer to the question is: **Dorsal side of 4th to 6th segment**.