Eubacteria kingdom has the unicellular organism that lacks a nucleus.
Eubacteria are the most commonly found organisms in the world.
They are also known as true bacteria, and are present on almost all surfaces.
They are prokaryotic cells, and hence do not have a nucleus.
The eubacteria kingdom is one of the six kingdoms in which the entire living world is classified.
Thus Kendra is study Eubacteria kingdom .
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