Wings of insects and birds are

Options

A. Analogous
B. Homologous
C. Vestigial
D. Atavism

Explanation

**Step-by-Step Solution:**

1. **Understanding the Question**: The question asks about the relationship between the wings of insects and birds. We need to categorize these wings based on their evolutionary significance.

2. **Identifying the Options**: The options provided are:
- A) Analogous
- B) Homologous
- C) Vestigial
- D) Atavism

3. **Defining Key Terms**:
- **Homologous Structures**: These are structures that share a common origin but may serve different functions in different organisms. They arise from a common ancestor and have similar embryonic development.
- **Analogous Structures**: These are structures that serve similar functions but do not share a common origin. They arise independently in different organisms due to similar environmental pressures.
- **Vestigial Structures**: These are remnants of organs that had a function in ancestral species but are no longer functional in the current organism.
- **Atavism**: This refers to the reappearance of traits from distant ancestors that are not present in the immediate ancestors.

4. **Analyzing the Wings of Insects and Birds**:
- The wings of insects (like butterflies) and birds (like sparrows) serve the same function of flight but are structurally different. Insects have wings made of membranes, while birds have wings that are modified forelimbs with bones.

5. **Conclusion**: Since the wings of insects and birds perform the same function (flight) but have different structural origins, they are classified as **analogous structures**.

6. **Final Answer**: The wings of insects and birds are **A) Analogous**.

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