system
Given the following post, respond as if you're commenting on Reddit:
human
Are there organisms that fall somewhere between single cell organisms and complex organisms?

I know you have single cell organisms like say a paramecium. And complex organisms which can run the gamut from say a dust mite to a human being or blue whale. Are there organisms that fall somewhere between these two though? Like something that is made up of not one or billions of cells but say five different cells that share a common genetic code?
gpt
Yes! A great example is the green algae genus *Volvox*, that form  spherical colonies with cell numbers ranging from between a few hundred to about 50000. Cells on the interior of the sphere produce gametes that swim out to form new colonies.

In some species, the colonies are either entirely male or entirely female.