AP BIOLOGY

Detailed explanation-1: -A group of organs that work together to maintain a stable internal environment and perform a particular function is called an organ system.

Detailed explanation-2: -An organ system is a group of organs that work together to perform one or more functions. Each organ has a specific function in the body and is made up of certain tissues. Examples of organ systems are-The Respiratory System and Circulatory System.

Detailed explanation-3: -The correct option is D Organ system. A group of organs working together to perform a specific function is called an organ system. An example of an organ system is the circulatory system, which includes different organs like the heart, arteries, veins, and capillaries.

Detailed explanation-4: -All living things are composed of cells, and a group of cells form tissues. These tissues combine to form organs, and the organs form an organ system. The tissues perform simpler tasks, whereas the organs perform the complex functions of the body.