unicellulars
Unicellular organisms are life forms composed of a single cell. This single cell carries out all essential life functions, including metabolism, reproduction, and response to stimuli. Despite their simple structure, unicellular organisms exhibit remarkable diversity and inhabit virtually every environment on Earth, from soil and water to the bodies of other organisms.
These organisms can be prokaryotic or eukaryotic. Prokaryotes, such as bacteria and archaea, lack a true nucleus
Reproduction in unicellular organisms is typically asexual, most commonly through binary fission, where one cell divides