Which of the following is an example for link species?

Options

A. Lobe fish
B. Dodo bird
C. Sea weed
D. Tyrannosaurus rex

Answer

To determine which of the following is an example of a link species, we need to analyze the options provided: lobefish, dodo bird, seabeed, and Tyrannosaurus rex.

### Step-by-Step Solution:

1. **Understanding Link Species**:
- Link species are organisms that exhibit characteristics of two different groups. They serve as a connection or transition between these groups in the evolutionary tree.

2. **Analyzing the Options**:
- **Lobefish**: This species has features of both finned fishes and amphibians. It possesses fins that have structures resembling the limbs of tetrapods (four-limbed animals), making it a transitional form between aquatic animals and land-dwelling vertebrates.
- **Dodo Bird**: This is an extinct bird that does not serve as a link between two groups; it is simply a representative of its own lineage.
- **Seabeed**: This term is not commonly associated with a specific organism that would be considered a link species.
- **Tyrannosaurus rex**: This is a well-known dinosaur and does not exhibit characteristics of two different groups in the way that a link species would.

3. **Conclusion**:
- The lobefish is the correct answer as it shows characteristics of both aquatic animals and amphibians, making it a link species.

### Final Answer:
- The lobefish is an example of a link species.