The organisms of this kingdom have a true vertebral column and the internal skeleton structure.
Classification of Vertebrata
· Vertebrates are further classified as −
· Let’s discuss each of them in brief −
· The organisms of this group are typically different types of fishes.
· Fishes can live only in water.
· The skin fish is covered with scales/plates.
· Fish use oxygen dissolved in water by using gills
· The tail of fish helps in their movements.
· Fishes are cold-blooded organisms and their hearts have only two chambers.
· Fishes lay eggs.
· The organisms of amphibia have mucus glands in the skin, and they have three-chambered heart.
· Amphibian can live in water as well as on land.
· The organisms of amphibian respire through either gills or lungs.
· The organisms of amphibia lay eggs.
· The organisms of this group are cold bolded.
· The organisms of reptilia lay eggs with tough coverings.
· The organisms of Aves group are warm-blooded.
· The organisms of Aves group lay eggs except a few, such as bat.
· Most of the Aves have feathers.
· The organisms of Mammalia group are warm-blooded and they have four-chambered hearts.
· Mammalia are typically characterized for their mammary glands.
· Mammary glands produce milk to nourish the young one.
· Most of the mammals produce live baby; however, a few of mammals, such as, the platypus and the echidna lay eggs.
· Mammals’ skin has hairs along with sweat and oil glands.