NEET BIOLOGY

Detailed explanation-1: -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-2: -For example, lungs, trachea, etc. Several organs in the body come together to perform a common body function and it is known as organ system. For example lungs, bronchi, pharynx, trachea, etc. come together to form the respiratory system in human body.

Detailed explanation-3: -For example, the respiratory and circulatory systems work together to provide the body with oxygen and to rid the body of carbon dioxide. The lungs provide a place where oxygen can reach the blood and carbon dioxide can be removed from it.

Detailed explanation-4: -An organ system is a group of organs that work together to perform various functions. Circulatory system (constituted by heart, blood vessels etc) and digestive system (constituted by organs like oesophagus, stomach etc) are examples of organ systems. So, the correct option is the “Organ system".