21.Mitochondria are present in organisms in the following kingdoms except: A. Plantae B. Fungi C. Protista D. Archaea E. Animalia 22.Which of the following is not an example of a member of Archaea? A. Purple bacteria B. Methanogens C. Thermophiles D. Halophiles 23.Mitochondria are descendents of __________, and chloroplasts are descendents of _________. A. purple bacteria; cyanobacteria B. methanogens; protists C. cyanobacteria; fungi D. orange bacteria; purple bacteria 24.Why are mitochondria and chloroplasts believed to have entered early eukaryotic cells by endosymbiosis of bacteria? A. They are the same size as bacteria. B. They contain DNA. C. They are not derived from the endomembrane system as other organelles are. D. All of the choices are correct. 25.Which of the following is correct about the evolutionary relationships among the three domains? A. Archaea and bacteria are more closely related to each other than to eukaryotes. B. Eukaryotes and bacteria are more closely related to each other than to archaea. C. Archaea and eukaryotes are more closely related to each other than to bacteria. D. They are equally distant from each other. Â Â