Bacteria reproduce through binary fission. Binary fission is a simpler process than mitosis in plants and animals because bacteria

Bacteria are prokaryotes, meaning they do not have a membrane-bound nucleus. Mitosis is the process of dividing the nucleus, so bacteria do not need to carry out mitosis when they reproduce by binary fission. Being single-celled does not by itself make reproduction simpler, and bacteria do divide their cell contents as part of binary fission.

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