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

Options

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

Explanation

To answer the question about the wings of a bird and an insect, we can follow these steps:

### Step-by-Step Solution:

1. **Identify the Structures**:
- The wings of a bird and the wings of an insect are the structures in question.

2. **Understand Their Functions**:
- Both the wings of birds and insects serve the same primary function: flight.

3. **Examine Their Anatomy**:
- Despite having the same function, the anatomical structure of a bird's wing (which is a modified forelimb) is very different from that of an insect's wing (which is an extension of the exoskeleton).

4. **Consider Their Evolutionary Background**:
- Birds are vertebrates and belong to a different evolutionary lineage compared to insects, which are arthropods. This indicates that they do not share a recent common ancestor.

5. **Define the Type of Evolution**:
- The similarity in function but difference in anatomical structure suggests that these wings evolved independently. This phenomenon is known as convergent evolution.

6. **Classify the Structures**:
- Since the wings of birds and insects have similar functions but different origins, they are classified as analogous structures.

7. **Conclusion**:
- Therefore, the wings of a bird and the wings of an insect are analogous structures that represent convergent evolution.

### Final Answer:
The wings of a bird and the wings of an insect are analogous structures, representing convergent evolution.

---