Select the mismatched pair of the organism and its locomotory organ.

Options

A. Pigeon - Wings
B. Snail - Bristles
C. Cockraoch - Legs
D. Fish - Fins

Explanation

To solve the question of selecting the mismatched pair of the organism and its locomotory organ, we can follow these steps:

### Step-by-Step Solution:

1. **Understand the Question**: We need to identify which pair of organism and its locomotory organ does not match correctly.

2. **Analyze Each Option**:
- **Pigeon**: The locomotory organ is the wings. This is correct as pigeons use their wings to fly.
- **Snail**: The locomotory organ is mentioned as bristles. This is incorrect because snails actually use a muscular foot to move, not bristles.
- **Cockroach**: The locomotory organ is the legs. This is correct as cockroaches have three pairs of legs for movement.
- **Fish**: The locomotory organ is the fins. This is correct as fish use their fins to swim.

3. **Identify the Mismatched Pair**: From the analysis, the second option (snails with bristles) is the mismatched pair because snails do not use bristles for locomotion; they use a muscular foot.

4. **Conclusion**: The mismatched pair is the snail with bristles.

### Final Answer:
The mismatched pair of the organism and its locomotory organ is **Snail - Bristles**.

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