In male cockroach, mushroom gland, acting as an accessory reproductive gland, is situated in the abdominal segments -

Options

A. `4^(th)- 5^(th)`
B. `6^(th)- 7^(th)`
C. `7^(th)- 8^(th)`
D. `8^(th)-10^(th)`

Explanation

To answer the question regarding the location of the mushroom gland in male cockroaches, we can break down the information as follows:

### Step-by-Step Solution:

1. **Understanding the Mushroom Gland**:
- The mushroom gland is an accessory reproductive gland found in male cockroaches. Accessory reproductive glands are those that assist in reproduction but do not directly participate in the reproductive process.

2. **Identifying the Location**:
- The question specifically asks for the abdominal segments where the mushroom gland is located. In male cockroaches, these glands are situated in the sixth and seventh abdominal segments.

3. **Function of the Mushroom Gland**:
- The mushroom gland has two types of tubules:
- **Utriculus majoris**: This type forms the inner layer of the spermatophore, which is a structure that contains sperm.
- **Utriculus bravior**: This type nourishes the sperm, ensuring that they remain viable.

4. **Conclusion**:
- Therefore, the correct answer to the question is that the mushroom gland is located in the sixth and seventh abdominal segments of the male cockroach.

### Final Answer:
The mushroom gland in male cockroaches is situated in the sixth and seventh abdominal segments.

---