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Vertebrate Animals. Phylum Chordate. Invertebrates. Dorsal Nerve Cord Gill Slits Tail Structures Closed Circulatory System Multi chambered Heart Warm Blooded- Body Temp. remains constant. Cold Blooded- Body Temp. changes with external conditions. Fish. Amphibians. Reptiles.
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Phylum Chordate Invertebrates • Dorsal Nerve Cord • Gill Slits • Tail Structures • Closed Circulatory System • Multi chambered Heart • Warm Blooded- Body Temp. remains constant. • Cold Blooded- Body Temp. changes with external conditions. Fish Amphibians Reptiles Mammals Birds
Fish • Scales- reduce friction • Swim Bladder- allows for pressure change in deep waters • Fins- swim direction • External Fertilization- except sharks and rays • Salt Water- kidneys to prevent dehydration • Freshwater- Absorb water • Jawless • Cartilage • Bony
Amphibians • Adapted to Water and Land • Youth- Gills, Tail, 2 Chambered Heart Adult • Powerful Legs • Lungs • Double Loop Circulation • 3 Chambered Heart • External Fertilization • Salamanders • Frogs and Toads
Birds • Eggs, Beaks, Migrate • Reasons a Bird can Fly- • Feathers- reduce friction • Hollow Bones- light • Wings- reduced air pressure Perching Prey Flightless Aquatic
Reptiles • Dry Scales • Carnivore/ Flexible Jaw • Egg • Cold Blooded Turtles and Tortoises Dinosaurs Alligator & Crocodile Lizard Snakes
Mammals • Warm Blooded • Females produce milk • Hair/ Specialized Teeth • Developed Brains Monotreme– Egg Laying Marsupial- Pouched Placental
Placental Mammal Gestation Period Gestation Period- time from fertilization to birth. • Human- 9 months • Horse- 11 months • Cat- 2 months • Dog- 2 months • Elephant- 20.5 months • Rhino- 15 months