Name the animals that respire through gills, lung and skin.
- Gills are the respiratory organs in aquatic organisms such as fishes. Gills help in the exchange of respiratory gases by absorbing dissolved oxygen from the water and releasing carbon dioxide in the water.
- Lungs are the respiratory organs of many land animals such as lizards, dogs, frogs etc. The exchange of respiratory gases take place in the alveoli of lungs.
- Skin is the respiratory organ in earthworm and amphibians such as frog. The respiratory gases diffuse through the surface of skin in such animals. Frog can respire by both through lungs and skin.