The wings of a bird and the wings of an insect are

Options

A. homologous structures and represent divergent evolution
B. analogous structures and represent convergent evolution
C. phylogenetic structures and represent divergent evolution
D. homologous structures and represent convergent evolution

Answer

**Step-by-Step Solution:**

1. **Understanding the Structures**:
- The wings of birds and the wings of insects are both used for flying, which is their primary function.

2. **Defining Homologous Structures**:
- Homologous structures are those that have a similar structure but may serve different functions. They arise from a common ancestor.

3. **Defining Analogous Structures**:
- Analogous structures are those that serve the same function but have different structural origins. They do not share a common ancestor.

4. **Comparing Bird and Insect Wings**:
- The wings of birds are derived from their forelimbs, while the wings of insects develop from the outer surface of their bodies. This indicates that their structures are different.

5. **Conclusion**:
- Since the wings of birds and insects have different structures but perform the same function (flying), they are classified as analogous structures. This is an example of convergent evolution, where unrelated species evolve similar traits due to similar environmental pressures.

**Final Answer**: The wings of a bird and the wings of an insect are analogous structures.

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