The anterior and posterior chambers of gei pouch respectively are 

Options

A. gynatrium & vestribulum
B. vas efferens & gynatrium
C. genital chamber & oothecal chamber
D. both 1 & 3

Answer

To solve the question regarding the anterior and posterior chambers of the genital pouch in cockroaches, we can follow these steps:

### Step-by-Step Solution:

1. **Understand the Structure**:
- The female reproductive system of cockroaches consists of a pair of ovaries connected by oviducts, which lead to the vagina and finally to the genital pouch.

2. **Identify the Chambers**:
- The genital pouch contains two main chambers: the genital chamber and the utical chamber.

3. **Define the Chambers**:
- The **genital chamber** is also known as the **guinatrium** and is located in the anterior position of the genital pouch.
- The **utical chamber** is also referred to as the **vestibulum** and is located in the posterior position of the genital pouch.

4. **Match the Options**:
- The question provides options that include these terms.
- The anterior chamber (guinatrium) corresponds to the genital chamber, and the posterior chamber (vestibulum) corresponds to the utical chamber.

5. **Conclusion**:
- Therefore, the anterior and posterior chambers of the genital pouch are the **guinatrium** and the **vestibulum**, respectively.
- Both options one (guinatrium and vestibulum) and three (genital chamber and utical chamber) are correct.

### Final Answer:
The anterior and posterior chambers of the genital pouch are **guinatrium** and **vestibulum**, respectively. Hence, both options one and three are correct.

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