What composes an organ system in an organism?

An organ system in an organism is composed of a group of organs that work together to perform specific functions that are essential for the survival and health of the organism. For instance, the digestive system includes organs such as the stomach, intestines, liver, and pancreas, all of which collaborate to break down food, absorb nutrients, and expel waste. This collaborative effort enhances efficiency and effectiveness, which is vital for maintaining homeostasis within the body.

The other choices do not accurately represent what an organ system is. For example, independent organs do not form a cohesive system, while a group of organ systems would refer to a higher level of biological organization, encompassing the entire organism, not just one system. Lastly, while cells are the building blocks of life, the composition of an organ system specifically pertains to the organs themselves rather than individual cell types.