Why are bacteria placed in a kingdom by themselves?

Archaebacteria and Eubacteria. Previously they had been categorizedas one kingdom Monera, but has since been split. The Six Kingdoms: Plants, Animals, Protists, Fungi, Archae…bacteria, Eubacteria. Like archaebacteria, eubacteria are complex and single celled. Mostbacteria are in the EUBACTERIA kingdom. read more

They aren’t placed in a kingdom by themselves, they have their own domain (thing above kingdom) to themselves. They have they’re own domain, because they are different from the other two domains and all bacteria share a common ancestor, that isn’t in one of the other two domains. read more

Bacteria are prokaryotes, whose cells have no nuclei, and they are much more like other bacteria than like any other organisms. read more