Question

Select all that apply. Which vertebrates are endothermic?

-birds
-reptiles
-amphibians
-mammals
-bony fish

Answer 1

Birds, mammals, bony fish

Answer 2

Vertebrates that are endothermic are birds and mammals. Endothermic organisms are able to regulate their own body temperature while ectothermic organisms depend on the temperature of the environment. Birds and mammals are endothermic organisms. Fish, amphibians, and reptiles are ectothermic organisms.