Fill in the Blanks vertebrate and invertebrateOnline version Vertebrate and invertebrate animals by Ana Gimeno Casanova 1 birds sponges wings reptiles dry Fish crustaceans echinoderms water vertebrate insects Invertebrate worms jellyfish invertebrate Mammals water Amphibians feathers arachnids molluscs cold arthropods backbone lungs The animals are classified into two large groups : animals and animals . Vertebrate animals have and skeleton . There are five groups of vertebrates : Mammals , , fish , and amphibian . have hair in the body , they breath by , they have warm - blooded and mamals mothers nurse their young with milk . Birds have in the body , they have 2 legs and 2 , they can move in the air . have scales in the body and they breath by gills , they have fins and they can move in the . Reptiles have scales in the body , they have skin , they breath by lungs and they have - blooded . have nude skin , they breath by lungs , they can move in the and in the land , they have cold - blooded . animals don't have backbone . There are six groups of invertebrate : Molluscs , echinoderms , , , worms and . The octopus and snails are . Arthropods are divided into three groups : ( ant , bee , butterfly ) , ( spiders ) and ( crabs ) . Starfish and seaurchin are . There are a lot of types of sponges , and jellyfish .
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