5
Most members of class Amphibia are ectothermic , Class itself can't be ectothhermic .
There are five main classes of vertebrates, but one of these classes is divided into three classes, giving a total of seven classes altogether.Mammals (Mammalia)Birds (Aves)Reptiles (Reptilia)Amphibians (Amphibia)Fish - which in turn are subdivided into:Agnatha (jawless fish without scales, e.g. lampreys and hagfish);Chondrichthyes (sharks and rays, which have skeletons of cartilage rather than bone)Osteichthyes (all the bony fish e.g. tuna, trout, whiting, etc.)
Glucose is taken from food.Oxygen is taken through air
There are seven classes of vertebrates.The five main classes of vertebrates are:Mammals (Mammalia)Birds (Aves)Reptiles (Reptilia)Amphibians (Amphibia)Fish - which in turn are subdivided into Agnatha (jawless fish without scales, e.g. lampreys and hagfish); Chondrichthyes (sharks and rays, which have skeletons of cartilage rather than bone); and Osteichthyes (all the bony fish e.g. tuna, trout, whiting, etc.)
Vertebrates.
The vertebrates are further divided into five groups or classes.
There are 5 main classes: Mammals Birds Reptiles Amphibians Fish
Yes, they are one of the classes of vertebrate.
There are seven classes of vertebrates. They are the jawless fish, the cartilaginous fish, the bony fish, the amphibians, the reptiles, the mammals, and the birds. Within each group there are many species.
reptiles amphibians and fish
what two classes of vertebrates use external fertilisation
birds mammals fish(also ectotherms)
Fish, Amphibians, Reptiles, Birds, Mammals
Vertebrates can be classified into mammals, aves(birds), reptiles, amphibians and pisces(fishes).
the fossil record
yeah buddy
fishes amphibians reptiles birds mammals