What is the common chamber where the alimentary canal, urinary and reproductive tracts open in amphibians?

Step-by-step solution

The alimentary canal, urinary and reproductive tracts open into a common chamber called cloaca which opens to the exterior in amphibians. Respiration is by gills, lungs and through skin in amphibians.Reptiles are mostly terrestrial animals and their body is covered by dry and cornified skin. Heart is usually three-chambered in reptiles, but four-chambered in crocodiles.Reptiles are poikilotherms..Reptiles are poikilotherms. Fertilisation is internal. Reptiles are oviparous and development is direct.The main charact