Kingdom Animalia Phylum Chordata

1. Kingdom AnimaliaPhylum Chordata • Most are classified as VERTEBRATES – organisms with a backbone

2. Supraclass PiscesFish • Ectothermic - cold-blooded • Gills for gas exchange • Water habitat • Scavengers, carnivores, predators, parasites • Swim with fins • External fertilization (bony fish) • Separate sexes • Bilateral symmetry

3. Class AgnathaJawless Fish – lampreys & hagfish • Lampreys: live in salt and freshwater • Parasitic- round mouth lined with teeth • Slimy skin, no scales

4. Hagfish: scavengers • Use 6 short tentacles surrounding the mouth to find its food • Blind

5. Sharks paired fins streamlined bodies predators - rely on sense of smell and movement Rays and Skates flat, wide bodies with long thin tails for life on ocean bottom large pectoral fins (look like wings) Class ChondrichthyesCartilaginous Fish – shark, ray, & skates

7. Class OsteichthyesBony Fish – ex. Perch, trout, bass • scales covering the body • skeleton made of bone • swim with the aid of fins • have swim bladder that works like a balloon

9. Class Amphibia –frogs, toads, salamanders, & newts Characteristics • “Double Life” -lives part of its life in water and part on land • ectothermic • no scales or claws • Have thin, moist skin

10. larvae are herbivores, adults carnivores • larva have tails to move in water • external fertilization with no parental care • lay eggs without shells in water

11. Body Plan • Bilateral symmetry • 3 chambered heart • Larvae breathe through gills; adults breathe through lungs • Breathe through thin, moist skin (produces mucus) • Changes from larva to adult through the process of metamorphosis

12. Class Reptilia –snakes, lizards, turtles, alligators • Characteristics • First vertebrate to live and reproduce entirely on land • Ectothermic • Carnivores or omnivores • Have scales and claws • Internal fertilization with no parental care • Lay amniotic eggs with leathery shells

13. Body Plan • Bilateral symmetry • 3 chambered heart • Breathe through lungs • Dry, scaly skin prevents water loss

15. Class AvesBirds • Characteristics • Endothermic • Has feathers and two legs covered with scales • Front limbs are wings • Beaks, claws and good vision help birds get food • Carnivores, herbivores, insectivores • Internal fertilization • Amniotic eggs with hard outer shell

16. Body Plan • Wings • 4-chambered heart • Lungs • Hollow bones • Strong breast muscles

20. Class Mammalia • Characteristics • Hair or fur at some stage of development • Give birth to live young (except Monotremes) • Endotherms • Herbivores, carnivores and omnivores • Walk, swim, or fly • Sexual (egg and sperm) with separate sexes • Internal fertilization

21. Body Plan • Internal skeleton • Complex organ systems • Mammary glands (for milk) • Four-chambered heart • Lungs

22. Monotremes (lay eggs) • Duckbill platypus • Marsupials (live young develop in a pouch) • Kangaroos, koalas • Placental (young develops internally) 12 Orders with examples such as • Primates • Bats • Whales & dolphins • Walrus & seals • Hoofed livestock • Rodents • Bears • Elephants

23. Monotreme Marsupials