According to endosymbiosis theory, flagella may have been derived by the ingestion of prokaryotes similar to:
Correct answer: C. Spirochete
- A. Amoeboid prokaryote
- B. Aerobic bacterium
- C. Spirochete
- D. Spirillum
Explanation
In the context of the endosymbiotic theory, spirochetes are interesting because some scientists hypothesize that certain spirochetes may have played a role in the evolution of eukaryotic cells. This theory suggests that early eukaryotic ancestors may have engulfed spirochete-like bacteria, leading to the development of complex cellular structures. This relationship could have contributed to the evolution of unique cellular processes seen in modern eukaryotes, illustrating the potential impact of these prokaryotic organisms on the evolution of life.
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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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