In the mouth parts of a cockroach, the labium forms (i) ________ while (ii) _______ acts as a tongue.

Options

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

Answer

To answer the question regarding the mouth parts of a cockroach, we can break it down into the following steps:

### Step-by-Step Solution:

1. **Understanding the Mouth Parts of a Cockroach**:
- The mouth parts of a cockroach are adapted for biting and chewing. They consist of several components including the labrum, mandibles, maxillae, labium, and hypopharynx.

2. **Identifying the Labium**:
- The labium is specifically known as the lower lip of the cockroach. It plays a crucial role in the mouth structure by helping to manipulate food.

3. **Identifying the Tongue**:
- The structure that acts as the tongue in a cockroach is the hypopharynx. It assists in the movement of food and helps in the swallowing process.

4. **Filling in the Blanks**:
- Now, we can fill in the blanks in the question:
- (i) The labium forms **lower lip**.
- (ii) The **hypopharynx** acts as a tongue.

5. **Final Answer**:
- Therefore, the complete answer is: In the mouth parts of a cockroach, the labium forms (i) **lower lip** while (ii) **hypopharynx** acts as a tongue.