The Short Answer is Microbes. If you thought that Bacteria are Ancient you are Correct, however Archaea are more Ancient!
they both are single cells without nuclei
Archaea
archaea
The domain that consists of prokaryotic cells are bacteria and archaea.
all plants have bacteria
Arche bacteria are much closer to eukaryotes.Bacteria also have some similarities. NO. Archaea, Bacteria and Eukaryota. Bacteria are more closely related to the more complex organisms (Eukaryotes). Archaea are now considered in their own domain. The Archaea in plankton are the most abundant organism on the planet.
Archaea are older that bacteria.
The domains Bacteria and Archaea are composed of only unicellular organisms. These organisms are prokaryotic and lack a true membrane-bound nucleus in their cells.
Bacteria and Archaea
A cell that is not in the domain Bacteria or Archaea is in Eukarya.
Archaea
archaea
The domain that consists of prokaryotic cells are bacteria and archaea.
bacteria and archaea bacteria and archaea bacteria and archaea
Unicellular prokaryotic organisms are actually broken up into the Bacteria and Archaea domains. The Bacteria domain has several shapes, and the Archaea domain generally resembles the bacteria domain.
like bacteria members of the domain archaea are unicellular prokaryotes
all plants have bacteria
Archaea and Bacteria split up right after having an argument about cheese. :)