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Biology Chapter 39 Pg 779 Vertebrates -Fish

Biology Chapter 39 Pg 779 Vertebrates -Fish. Classes : 1. Jawless – hagfish, 783, detritivores lamprey, 784, some parasites external fertilization 2. Chondrichthyes – cartilage, internal fertilization, sharks, rays

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Biology Chapter 39 Pg 779 Vertebrates -Fish

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  1. Biology Chapter 39Pg 779Vertebrates -Fish • Classes: 1. Jawless – hagfish, 783, detritivores lamprey, 784, some parasites external fertilization 2. Chondrichthyes – cartilage, internal fertilization, sharks, rays 3. Osteichthyes – bony fish, external fertilization, fins 788, swim bladder and two chambered heart 790

  2. Fish Homeostasis Pg 782 • Freshwater fish – hypertonic, more salt in body than water, gain water, lose ions • Saltwater fish – hypotonic, less salt in body than water, lose water, gain ions Pg 795 #5,6

  3. Sensory FunctionPg 783 Olfactory Sacs – smell Lateral Line – sense vibrations in water

  4. Down feathers for warmth Countour feathers for flying Pg 859 Rigid hollow bones for lightweight strength Large keel sternum & pectoral muscles for flying Pg 845 Endothermic – warmblooded, controlled steady body temp, requires more energy/oxygen Air Sacs that store oxygen Pg 847 Ornithology - Birds Chapter 42 Pg 841

  5. Lightweight due to one ovary and no rectum Crop in esophagus that stores & moistens food Gizzard in stomach to grind food Pg 846 Four chambered heart to supply required energy and oxygen Pg 865 Precocial – can walk and swim after hatching, ducks, chickens Altricial – hatched blind and helpless, tree nesters Pg 849

  6. Mammals Pg 861 • Endothermic • Hair and mammary glands • 4 chambered heart Pg 865 • Single jawbone Pg 882 #25 • Specialized teeth Pg 883 #6

  7. Types of Mammals Pg 863 • Monotremes – oviparous, platypus, echidna, Australia, Pg 869 • Marsupials – viviparous, kangaroo, opossum, pouch • Placental – viviparous in uterus w/ placenta

  8. Types of PLACENTAL Mammals Pg 870 1. Toothless – anteaters, armadillos, sloths 2. Rodent-like – rabbits 3. Rodents – squirrels, mice, porcupine 4. Flying – bats 5. Insectivores – shrew, hedgehog, mole 6. Carnivores – dogs, cats, seals, sea lions

  9. 7. Even-toed hoof – deer, giraffe, pig 8. Odd-toed hoof – horse, rhino 9. Swimming – whales and dolphins 10. Manatees 11. Trunk nosed – elephants 12. Primates – monkeys, humans KNOW PRIMATE CHARACTERISTICS PG 875!!!

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