Which of the following animals sows discontinuous distribution?

Options

A. Green mussels
B. Bats
C. Lung fishes
D. Pacific salmons

Answer

To determine which of the following animals shows discontinuous distribution, we need to understand the concept of discontinuous distribution and analyze the given options: green mussels, bats, lungfishes, and Pacific salmons.

### Step-by-Step Solution:

1. **Define Discontinuous Distribution**:
- Discontinuous distribution occurs when the distribution of a species is interrupted by uninhabited areas, typically large expanses such as oceans or deserts. This results in populations of the same species being separated by significant distances, leading to variations in characteristics.

2. **Analyze the Options**:
- **Green Mussels**: These are generally found in coastal areas and do not exhibit a significant discontinuous distribution as they can inhabit various regions along coastlines.
- **Bats**: Bats are widely distributed and can inhabit various environments, including urban areas, forests, and caves. They do not show a discontinuous distribution.
- **Lungfishes**: There are three genera of lungfishes:
- *Protopterus* found in Africa,
- *Lepidosiren* found in South America,
- *Neoceratodus* found in Australia.
This distribution across three different continents, separated by large oceans, exemplifies discontinuous distribution.
- **Pacific Salmons**: These fish are primarily found in the Pacific Ocean and its tributaries. They have a more continuous distribution along the coastlines and rivers.

3. **Conclusion**:
- Among the given options, lungfishes are the only group that shows discontinuous distribution due to their presence on three separate continents, separated by large oceans.

### Final Answer:
- The animal that shows discontinuous distribution is **lungfishes**.

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