The mouth parts of cockroach consist of __________(i) , which forms the upper lip and __________(ii), which acts as the lower lip.

Options

A. i-labrum, ii-labium
B. i-labrum, ii-maxilla
C. i-maxilla, ii-mandible
D. i-mandible, ii-labrum

Answer

To answer the question about the mouth parts of a cockroach, we need to identify the structures that form the upper and lower lips.

1. **Identify the Upper Lip**: The upper lip of the cockroach is known as the **labrum**. It is an unpaired structure that forms the front part of the mouth.

2. **Identify the Lower Lip**: The lower lip of the cockroach is called the **labium**. Similar to the labrum, it is also an unpaired structure and forms the lower part of the mouth.

Thus, the complete answer to the question is:
The mouth parts of cockroach consist of **labrum** (i), which forms the upper lip and **labium** (ii), which acts as the lower lip.