Which term describes a group of tissues that work together for a specific function?

The term that describes a group of tissues working together for a specific function is "organ." An organ is made up of different types of tissues that collaborate to perform a particular task or function within an organism. For example, the stomach is an organ that contains muscle tissue, connective tissue, and epithelial tissue, all of which work together to digest food.

In contrast, the other terms refer to different biological structures. "System" refers to a group of organs that work together to perform complex functions, such as the digestive system, which includes organs like the stomach and intestines. "Cell" is the basic unit of life, representing the smallest structural and functional unit of an organism. "Tissue" refers to a group of similar cells that perform a specific function but does not encompass multiple tissue types working together like an organ does.