Animal Kingdom Invertebrates Animals without backbones The animal kingdom is divided into invertebrates and vertebrates. Invertebrates Define an invertebrate Animals without backbones Jellyfish and Sea Anemones Annelids Jelly like bodies Live in water Segmented bodies Animals with Shells Animals with Spiny Bodies Shell may be inside body

Body divide into segments 1 or 2 pairs of legs per segment Insects Spiders Exoskeleton Body in 3 sections – head thorax & abdomen 3 pairs of legs Legs (&wings) joined to thorax Exoskeleton Body in 2 sections 4 pairs of legs Crabs and Lobsters Millipedes and Centipedes Exoskeleton Body divide into segments 1 or 2 pairs of legs per segment Exoskeleton 5 pairs of legs Vertebrates Define a vertebrate Animals with backbones The vertebrates are divided into five groups. amphibians, fish, reptiles, birds, mammals Beside each group on the next page list the characteristics associated with it.

Fish Birds Amphibians Reptiles Mammals Feathers Gills Lay hard shelled eggs Parental care Gills Fins Scales Amphibians Reptiles Scale-covered skin Lay soft shelled eggs on land Some parental care Live on land and water Lay eggs in water Moist skin Adults have lungs Mammals Hair Ear pinna Parental care Mammary glands