KINGDOM ARCHAEBACTERIA
Description: Found in extreme environments such as hot boiling water and thermal vents or highly acid environments.
Divergent Event: Oldest living organism on Earth - more related to the eukaryotes than to the bacteria
Body Plan: Unicellular and prokaryotic
Metabolism: Heterotrophic (harvest energy by converting H2 and CO2 into methane gas)
Digestion: Extracellular
Nervous: None
Circulatory: Diffusion
Respiratory: None
Reproduction: Asexual (binary fission)
Examples:
1. Sulfolobus
2. Haloferax