Articles > System definition – quiz System definition – quiz Quiz Choose the best answer. 1. What is a system? Interdependent components that act as a unit An independent component of a unit Objects that function as separate units 2. Which of the following is not a natural system? Solar system Respiratory system Artificial ecosystem 3. There is an exchange of energy and matter Open system Closed system Isolated system 4. Digestive system Open system Closed system Isolated system 5. Domain consisting of eukaryotes Archaea Eubacteria Eucarya Send Your Results (Optional) Your Name To Email Time is Up!