Name the cavity in which the lungs are enclosed? What is its function? [2 MARKS]
Each point: 1 Mark 1. The lungs are enclosed in thoracic cavity. 2. Its function is to protect lungs from external impacts.
Name the muscular sheet which separates the abdomen from the chest cavity. What is its function? [2 MARKS]
What are gills? What are its functions? If it’s present along with lungs such organisms are called as? [3 MARKS]