Which of the following types of organs are supposed to be functional in ancestral species rather than in present-day species?
Correct answer: A. Vestigial organs
- A. Vestigial organs
- B. Homologous organs
- C. Analogous organs
- D. Embryonic organs
Explanation
The type of organs that are supposed to be functional in ancestral species rather than in present-day species are Vestigial organs.Vestigial organs are body parts that have lost their original function over time and are considered remnants of a species' evolutionary history. Examples in humans include the appendix, wisdom teeth, and tailbone, which are believed to have had more significant functions in our ancestors but are now reduced or non-functional. Studying these structures provides evidence for evolution, as they indicate shared ancestry and how a species adapts to its environment.
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About Evolution
Evolution describes heritable change in populations over generations through variation, natural selection and adaptation. Lamarckism explains inheritance of acquired characteristics, while Darwinism explains selection of favourable inherited variations; these historical explanations must not be confused with the modern genetic account of evolutionary change.
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