The brood pouch in female cockroach is formed by

Options

A. 7th, 8th and 9th sterna
B. 9th sternum, 9th and 10th terga
C. 6th, 8th and 9th sterna
D. 9th tergum, 8th and 9th sterna

Answer

To determine the formation of the brood pouch in female cockroaches, we can follow these steps:

### Step-by-Step Solution:

1. **Understanding the Brood Pouch**: The brood pouch in female cockroaches serves as an egg storage organ. It is crucial for the reproductive process as it holds the fertilized eggs until they are ready to be laid.

2. **Identifying the Body Segments**: The cockroach body is segmented, and the brood pouch is formed from specific segments of the female's body. In cockroaches, the body is divided into three main parts: the head, thorax, and abdomen, which is further divided into segments.

3. **Locating the Relevant Segments**: The brood pouch is specifically formed by the 7th, 8th, and 9th segments of the female cockroach. These segments are part of the abdomen and are referred to as the sternum when discussing the ventral side of the body.

4. **Understanding Terminology**: The term "sternum" refers to the ventral (lower) part of the body, while "tergum" refers to the dorsal (upper) part. Therefore, the brood pouch is located on the ventral side of the cockroach's abdomen.

5. **Conclusion**: Based on the segments involved, the correct answer to the question is that the brood pouch in female cockroaches is formed by the 7th, 8th, and 9th sternum.

### Final Answer:
The brood pouch in female cockroach is formed by the 7th, 8th, and 9th sternum.

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