Which of the following is mismatched ?

Options

A. Clam -Gills
B. Lobster -Gills
C. Grasshopper-Book lungs
D. Polychaete -Parapodia

Explanation

To determine which of the following options is mismatched, we will analyze each option one by one:

1. **Clams have gills**:
- Clams are bivalve mollusks that possess a pair of large gills. These gills are used for respiration as they filter water and extract oxygen from it.
- **Conclusion**: This statement is correct.

2. **Lobsters have gills**:
- Lobsters are crustaceans that also possess gills. They can breathe underwater as long as their gills remain moist.
- **Conclusion**: This statement is correct.

3. **Grasshoppers have book lungs**:
- Grasshoppers do not have book lungs. Instead, they have a respiratory system that consists of tracheae (thin tubes) that transport air directly to their body parts. They have small openings called spiracles on their body surface for air intake.
- **Conclusion**: This statement is incorrect.

4. **Polychaetes have parapodia for respiration**:
- Polychaetes, which are a class of annelids, possess parapodia. These are paired, fleshy appendages that assist in locomotion and respiration.
- **Conclusion**: This statement is correct.

**Final Answer**: The mismatched statement is "Grasshoppers have book lungs."