Fishes, Amphibians, and Reptiles

Fish reproduce using external fertilization. External fertilization is when the female’s eggs are meeting with the male’s sperm outside of the female’s body. Three major groups are the jawless fish, cartilaginous fish, and bony fish. An amphibian is a vertebrate that is ectothermic. Most amphibians live the beginning of their lives in the water. A reptile is a vertebrate that is ectothermic and has scaly skin and a pair of lungs. Lizards, snakes, turtles, tortoises, and crocodiles are all examples of reptiles. Read More...