Mouth parts of different insects are the example of :

Options

A. Homologous structure
B. Analogous structure
C. Atavism
D. Vestigeal organs

Answer

**Step-by-Step Text Solution:**

1. **Understanding the Question**: The question asks about the classification of mouth parts of different insects. We need to determine whether they are homologous structures, analogous structures, examples of atavism, or vestigial organs.

2. **Defining Key Terms**:
- **Homologous Structures**: These are organs that have the same origin and structure but perform different functions in different species.
- **Analogous Structures**: These are organs that have different origins and structures but perform the same function.
- **Atavism**: This refers to the reappearance of ancestral traits in a descendant.
- **Vestigial Organs**: These are organs that have lost their original function through evolution.

3. **Analyzing Mouth Parts of Insects**:
- The mouth parts of different insects, such as a cockroach and a mosquito, have similar structural origins but serve different functions. For example, a cockroach's mouth parts are adapted for biting and chewing, while a mosquito's mouth parts are adapted for piercing and sucking.

4. **Conclusion**: Since the mouth parts of different insects share the same structural origin but perform different functions, they are classified as **homologous structures**.

5. **Final Answer**: The mouth parts of different insects are an example of **homologous structures**.

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