A cavity present in between the mouth parts of Cockroach is

Options

A. Buccal cavity
B. Preoral cavity
C. Buccopharyngeal cavity
D. Proventriculus

Answer

To solve the question regarding the cavity present in between the mouth parts of a cockroach, we can follow these steps:

### Step-by-Step Solution:

1. **Understanding the Options**: The question provides four options: buccal cavity, preoral cavity, buccopharyngeal cavity, and proventriculus. We need to identify which of these is specifically located between the mouth parts of a cockroach.

2. **Analyzing Each Option**:
- **Buccal Cavity**: This term generally refers to the cavity in the mouth where food is chewed and mixed with saliva. In humans, it is the space between the cheeks and gums. However, in the context of a cockroach, this term is not specific to the cavity between the mouth parts.
- **Preoral Cavity**: This is the cavity located in front of the mouth, where the pharynx is located. It is divided into two parts: the anterior salivarium and the posterior salivarium. This cavity is directly related to the mouth parts of the cockroach.
- **Buccopharyngeal Cavity**: This cavity pertains to structures related to the cheeks and pharynx. It is more relevant to higher organisms, including humans, and does not specifically refer to the cockroach's mouth parts.
- **Proventriculus**: This is a part of the digestive system in birds, specifically a glandular region of the stomach. It is not related to the mouth parts of a cockroach.

3. **Identifying the Correct Answer**: After analyzing the options, the preoral cavity is the cavity that is specifically located between the mouth parts of a cockroach. Therefore, the correct answer is **preoral cavity**.

### Final Answer:
The cavity present in between the mouth parts of a cockroach is the **preoral cavity**.