VERTEBRATES Mrs. Leary

Shared Characteristics Backbones with spinal cord Backbones with spinal cord Muscular system Muscular system Central nervous system Central nervous system Internal skeleton Internal skeleton Head with sensory organs Head with sensory organs

Kinds of Vertebrates Fish Fish Amphibians Amphibians Reptiles Reptiles Birds Birds Mammals Mammals

Fish Gills Gills Bone or cartilage Bone or cartilage Swim with fins Swim with fins Swim bladder – gas- filled sac to regulate buoyancy Swim bladder – gas- filled sac to regulate buoyancy Cold-blooded Cold-blooded

Fish 4 kinds: 4 kinds: Jawless Jawless Cartilaginous Cartilaginous Bony with lobe fins Bony with lobe fins Bony with ray fins Bony with ray fins

Amphibians At least part of their lives spent in the water At least part of their lives spent in the water Metamorphosis Metamorphosis Skin must be kept moist Skin must be kept moist Gills and lungs Gills and lungs Cold-blooded Cold-blooded

Amphibians Frogs Frogs Toads Toads Salamanders Salamanders Caecilians Caecilians

Reptiles Scales Scales Dry skin Dry skin Lungs Lungs Cold-blooded Cold-blooded

Reptiles Alligators Alligators Crocodiles Crocodiles Snakes Snakes Lizards Lizards Turtles Turtles Tortoises Tortoises

Birds Wings – flight Wings – flight Feathers Feathers Beak Beak Hollow bones Hollow bones Warm-blooded Warm-blooded

Mammals Hair or fur Hair or fur Can regulate their body temperature Can regulate their body temperature Warm-blooded Warm-blooded Give birth to live young Give birth to live young Mammary glands Mammary glands

Mammals 3 kinds: 3 kinds: Placental – carry their offspring in a placenta until born Placental – carry their offspring in a placenta until born Monotremes – lay eggs Monotremes – lay eggs Marsupials – give birth to undeveloped young who then develop in a pouch Marsupials – give birth to undeveloped young who then develop in a pouch