Tongue of cockroach is :

Options

A. labrum
B. hypopharynx
C. labium
D. mandibles

Answer

To answer the question "Tongue of cockroach is:", we will analyze each of the given options step by step.

### Step 1: Understand the Options
The options provided are:
1. Labrum
2. Hypopharynx
3. Labium
4. Mandibles

### Step 2: Analyze Each Option
- **Labrum**: This is the upper lip of the cockroach. Its primary function is to hold food particles during feeding. It does not serve as the tongue.

- **Hypopharynx**: This structure is also known as the "lingae" and is specifically referred to as the tongue of the cockroach. It plays a crucial role in the feeding process.

- **Labium**: This is the lower lip of the cockroach. It has sensory functions but is not considered the tongue.

- **Mandibles**: These are the true jaws of the cockroach, used for chewing food. They are not related to the tongue.

### Step 3: Identify the Correct Answer
From the analysis, it is clear that the **hypopharynx** is the structure that corresponds to the tongue of the cockroach.

### Conclusion
The tongue of the cockroach is called the **hypopharynx**.

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