In the mouth parts of a cockroach, the labium forms `ul("I")` while`ul("II")` acts as a tongue.

Options

A. (i) - upper lip , (ii) - maxilla
B. (i) - upper lip , (ii) - hypopharynx
C. (i) - upper lip , (ii) - maxilla
D. (i) - lower lip , (ii) - hypopharynx

Explanation

To answer the question regarding the mouth parts of a cockroach, we need to identify which structures correspond to the labium and the tongue.

### Step-by-Step Solution:

1. **Understand the Mouth Parts of a Cockroach**:
- Cockroaches have several mouth parts, including the labrum, labium, maxilla, mandible, and hypopharynx.

2. **Identify the Function of Each Part**:
- The **labrum** acts as the upper lip.
- The **labium** acts as the lower lip.
- The **maxillae** function similarly to cheeks.
- The **mandibles** serve as the jaws.
- The **hypopharynx** functions as the tongue.

3. **Analyze the Question**:
- The question states that the labium forms one part and the second part acts as a tongue.
- From our identification, the labium corresponds to the lower lip, and the hypopharynx corresponds to the tongue.

4. **Choose the Correct Option**:
- Based on the analysis, the correct match is:
- Labium = Lower Lip
- Hypopharynx = Tongue
- Therefore, the correct answer is the fourth option: "lower lip and hypopharynx".

### Final Answer:
The labium forms the lower lip while the hypopharynx acts as the tongue.

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