The given statement is true because the definition of an organism is a life form that meets the criteria of a living thing (there are 6 main criteria for it to be considered a living thing )
It responds to the environment.
It grows and develops.
It produces offspring.
It maintains homeostasis.
It has complex chemistry.
It consists of cells
Number 6 says that it needs to consist of cells, so if thing organism meets all the other criteria and consists of one or more cells, it is considered living.
So, organisms do range in composition from unicellular microorganisms to multicellular organisms.
