As there is a cellular level of life (like in amoeba),an organ system level of life (like in humans), does an organ level of life exist? If it does, please mention any organism that has an organ level of life and how they do all the living processes.

As there is a cellular level of life (like in amoeba),an organ system

1.	As there is a cellular level of life (like in amoeba),an organ system level of life (like in humans), does an organ level of life exist? If it does, please mention any organism that has an organ level of life and how they do all the living processes.
Answer» As there is a cellular level of life (like in amoeba),an organ system level of life (like in humans), does an organ level of life exist? If it does, please mention any organism that has an organ level of life and how they do all the living processes.