Which of the following is one piece of evidence for the endosymbiotic origin of eukaryotic organelles? A. mitochondria have flagella B. mitochondria have single membranes C. chloroplasts reproduce by binary fission D. existing eukaryote cells have bacterial endosymbionts
The answer is C. chloroplasts reproduce by binary fission. The endosymbiotic theory describes how mitochondria and chloroplasts descended from the same type of bacteria. According to the theory, a host cell ingested symbiotic bacteria, which specialized into chloroplasts. The evidence for this is that chloroplasts reproduce by binary fission similarly to bacteria.
