This theory says that "mitochondria and chloroplasts are, in effect, ancient bacteria which now live inside the larger cells":
Correct answer: D. Endosymbiont theory
- A. Darwin's theory of evolution
- B. Lamarckism
- C. Neo - darwinism
- D. Endosymbiont theory
Explanation
The endosymbiotic theory states that some of the organelles in today's eukaryotic cells were once prokaryotic microbes. They eventually lost their cell wall and much of their DNA because they were not of benefit within the host cell. Mitochondria and chloroplasts cannot grow outside their host cell. The illustration of the prokaryotic microbes penetrating into the now called eukaryotes is presented below:
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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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