Which list correctly names the five vertebrate groups?

Which list correctly names the five vertebrate groups?

• A. Mammals, Birds, Reptiles, Fish
• B. Mammals, Birds, Reptiles, Amphibians
• C. Mammals, Birds, Fish, Insects
• D. Mammals, Birds, Reptiles, Fish, Amphibians

Answer: (D)

Vertebrates are animals with backbones, and they’re grouped into five major categories: mammals, birds, reptiles, amphibians, and fish. The list that includes all five of these groups is the best choice because it reflects the full set of vertebrate categories students typically learn. The other options leave out at least one group or include an animal that isn’t a vertebrate (insects, for example), which would not fit the five-vertebrate framework. Examples help make it concrete: mammals like humans and dogs; birds like robins; reptiles like snakes; amphibians like frogs; and fish like salmon.

Vertebrates are animals with backbones, and they’re grouped into five major categories: mammals, birds, reptiles, amphibians, and fish. The list that includes all five of these groups is the best choice because it reflects the full set of vertebrate categories students typically learn. The other options leave out at least one group or include an animal that isn’t a vertebrate (insects, for example), which would not fit the five-vertebrate framework. Examples help make it concrete: mammals like humans and dogs; birds like robins; reptiles like snakes; amphibians like frogs; and fish like salmon.