Which term describes structures with a similar function across species but different origins?

Which term describes structures with a similar function across species but different origins?

• A. Homologous Structures
• B. Analogous Structures
• C. Vestigial Structures
• D. Epithelial Tissue

Answer: (B)

Analogous structures are features in different species that perform similar functions but do not derive from a common ancestral structure. This happens through convergent evolution, where distant lineages face similar environmental pressures and end up with similar adaptations. A classic example is the wings of insects and birds, which both enable flight but have different evolutionary origins and internal bone structures. By contrast, homologous structures come from a shared ancestor and may serve different functions, vestigial structures are leftovers of once-functional traits, and epithelial tissue is a basic tissue type rather than a cross-species structural comparison. So the term that describes structures with a similar function across species but different origins is analogous structures.

Analogous structures are features in different species that perform similar functions but do not derive from a common ancestral structure. This happens through convergent evolution, where distant lineages face similar environmental pressures and end up with similar adaptations. A classic example is the wings of insects and birds, which both enable flight but have different evolutionary origins and internal bone structures. By contrast, homologous structures come from a shared ancestor and may serve different functions, vestigial structures are leftovers of once-functional traits, and epithelial tissue is a basic tissue type rather than a cross-species structural comparison. So the term that describes structures with a similar function across species but different origins is analogous structures.