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Classes of Vertebrates


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Classes of Vertebrate: Birds, Mammals, Fishes, Reptiles, Amphibians

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Classes of Vertebrates

  1. 1. 1. Fishes A. Class Osteichtyes (Bony Fishes) largest group of fish have bony skeletons, paired fins, protective overlapping scales found both in fresh and saltwater habitats swim bladder or air bladder floatation device to keep them from sinking
  2. 2. 1. Fishes B. Class Chondrichthyes (Cartilageous Fishes) have flexible skeletons made up of cartilage tissue found in saltwater movable upper and lower jaws with several rows of sharp teeth
  3. 3. 1. Fishes B. Class Chondrichthyes (CartilageousFishes) Skates and rays have flattened winglike bodies with whiplike tails live on the ocean floor and feed on worms, mollusk and crustaceans Stingrays have poison stingers in tails Electric Rays produce large electric charge Sharks meat eaters and active hunter
  4. 4. 2. Class Amphibia (Amphibians) lives in water and part on land have smooth, moist, scale less skins a. tailed amphibians salamanders and newts have long bodies, long tails, 2 pairs of short legs active only at night
  5. 5. 2. Class Amphibia (Amphibians) Frogs have thin, moist skin live near ponds, streams, and swamps during winter, they hibernate by burrowing into the mud eat insects and worms tadpoles eat aquatic plants predators include snakes, birds and turtles
  6. 6. 2. Class Amphibia (Amphibians) a. tailless amphibians frogs and toads short and stout Toads have dry, rough and warty skin feed at night when it is cooler and more humid during winter, they hibernate by burrowing into the sand
  7. 7. HIBERNATE life process slows down and become inactive
  8. 8. 3. Class Reptilia (Reptiles) includes crocodiles, alligators, turtles, tortoises, lizards, snakes do not undergo metamorphosis
  9. 9. 3. Class Reptilia (Reptiles) Crocodiles and Alligators largest living reptiles to more than 7 meters found in lakes, swamps & rivers in tropical region have long snouts, powerful jaws with large teeth and long muscular tails feed on animals that they capture
  10. 10. 3. Class Reptilia (Reptiles) Alligators snout is rounded Crocodiles snout is long more vicious and aggressive feed on animals that they capture
  11. 11. 3. Class Reptilia (Reptiles) Turtles found both on land and in saltwater no teeth but grab and tear their food with the sharp edges of their beak feed on plants and small animals may live to be more 100 yrs. old
  12. 12. 3. Class Reptilia (Reptiles) Land dwelling turtles Tortoise slow moving short legs have claws for digging 180 klgs. Sea turtles ocean dwelling 2 m and weight 500 klgs. lay eggs in holes
  13. 13. 3. Class Reptilia (Reptiles) Snakes feed on mice, rats, frogs, toads, insects, fish & other small animals some swallow their prey alive while some kill their prey before they swallow it.
  14. 14. 3. Class Reptilia (Reptiles)
  15. 15. 3. Class Reptilia (Reptiles) Phytons, boas and king snakes coil their body around their body *Venoms neurotoxins which attack nervous tissues from the pair of specialize teeth called fangs cause muscle paralysis and affect the heart and lungs
  16. 16. 3. Class Reptilia (Reptiles) Lizards & Snake belongs to the same order covered with scales Lizards four legged have movable eyelids and external ear opening found in deserts, forest & in water
  17. 17. 3. Class Reptilia (Reptiles) Lizards small lizards feed on insects, worms, spiders and snails large lizards eat eggs, bird, small lizards and small mammals few lizards feed on plants