Mouth parts of cockroach are 

Options

A. biting and chewing type
B. lapping type
C. piercing and sucking type
D. sponging and sucking

Answer

### Step-by-Step Solution:

1. **Identify the Mouth Parts of Cockroach**: The mouth parts of a cockroach are classified as biting and chewing type. This means they are adapted for biting and grinding food.

2. **List the Specific Mouth Parts**: The specific structures that make up the mouth parts of a cockroach include:
- **Mandibles**: These are the primary mouth parts used for biting and chewing.
- **Maxillae**: These assist in manipulating food and help in the chewing process.
- **Labium**: This acts as a lower lip and helps in holding food.
- **Labrum**: This serves as an upper lip and helps in covering the mouth.

3. **Differentiate from Other Types**:
- **Lapping Type**: This type is not found in cockroaches; it is seen in animals like dogs, which use their tongues to lap up food.
- **Piercing and Sucking Type**: This type is characteristic of insects like mosquitoes, which pierce the skin to suck blood.
- **Sponging and Sucking Type**: This type is found in organisms like leeches, which absorb fluids without piercing.

4. **Conclusion**: Based on the structure and function of the mouth parts, the correct classification for the mouth parts of a cockroach is "biting and chewing type".

### Final Answer:
The mouth parts of a cockroach are of the biting and chewing type.

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