Flagella might have arisen through the ingestion of which of the following?
Correct answer: D. Spirochetes
- A. Cyanobacteria
- B. Chlamydomonas
- C. Paramecium
- D. Spirochetes
Explanation
The flagella might have arisen through the ingestion of spirochetes, which are spiral-shaped bacteria. Spirochetes are motile, meaning that they can move around, and they have flagella that help them to do this. Cyanobacteria, Chlamydomonas, and Paramecium are all eukaryotes (organisms with a nucleus). Eukaryotes did not evolve from prokaryotes.
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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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