Ch. 33 bio 3

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patterson911
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51702
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Ch. 33 bio 3
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2010-11-25 20:02:33
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Deuterostomes
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Ch. 33 bio 3
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  1. What are some characteristics of Metatherians?
    • · Viviparous
    • · Lack a placenta
    • · Short gestational period – immature young nourished in a marsupium (pouch)
  2. Examples of Metatherians?
    marsupials (pouch-bearing) [Koala, Tasmanian devil, Virginia opossum, kangaroo)
  3. Examples of Therian mammals?
    (marsupials and eutherians)
  4. Examples of Prototherian mammals?
    Duck-billed platypus, Echidna (spiny ant eater)
  5. What are some characteristics of Prototherian mammals?
    • · Oviparous
    • · Lack a placenta
    • · Have a cloaca
  6. Therians (most) do what?
    give birth to live young
  7. Prototherians do what?
    lay eggs
  8. What are two major groups of mammals?
    • Prototherians
    • Therians
  9. What is some characteristics of
    Mammals?
    • · Mammary glands that produce milk
    • · Hair or fur
    • · Sweat glands
    • · 4-chambered heart
    • · Teeth specialized for diverse diets
    • · Lungs with diaphragm for ventilation
    • · Internal fertilization
  10. Examples of Neognath birds?
    (Mandarin duck, Frigate bird, Barn owl, Brown thrasher, Flamingo, King penguin)
  11. Examples of Paleognath birds?
    (rhea, ostrich, emu, kiwi, cassowary)
  12. Oldest known fossil is?
    Archaeopteryx
  13. Birds are living representatives of what lineage?
    dinosaur
  14. Birds?
    • · Feathers – allow flight; provide insulation
    • · Forelimbs modified as wings
    • · Light weight bones filled with air spaces
    • · Endothermic (maintain body temperature via metabolism)
    • · Lungs with air sacs – permit unidirectional flow of air through lungs
    • · Major agents of see dispersal
    • · Some exhibit elaborate courtship displays
  15. What are some characteristics of Crocodilians?
    • · Carnivorous (eat vertebrates)
    • · Female guards eggs until hatching occurs
  16. Snakes?
    carnivorous; many inject venom into prey; some have vestigial pelvic and limb bones (Ringneck snake, Indian cobra, Beaked sea snake, Coral snake, Milk snake, Inland taipan)Black Mamba – Jaws can unhinge to consume large prey
  17. Lizards?
    most are insectivores, but some are herbivores or predators (Horned lizard, Gila monster, Mexican beaded lizard, Komodo dragon, Blue-tonged lizard)
  18. Tuataras?
    lizard-like in appearance; native to New Zealand
  19. Lepidosaurs are?
    • Tuataras
    • Lizards
    • Snakes
  20. Lepidosaurs include?
    tuataras and squamates (lizards and snakes)
  21. What are the characteristics of Turtles?
    • · Dorsal and ventral bony plates form a shell
    • · Dorsal shell fused to ribs
    • · Aquatic (most) or terrestrial
    • · Omnivores (most)
  22. Four groups of Reptiles are?
    • Turtles
    • Lepidosaurs
    • Crocodilians (crocodiles and alligators)
    • Birds
  23. What are the characteristics of Reptiles?
    • · Body covered with keratin scales or feathers
    • · Respire via lungs
    • · 3-chambered heart with partially divided ventricle (all except crocodiles, alligators and birds à 4-chambered)
    • · Most are oviparous (leathery or calcium carbonate shell)
    • · Internal fertilization
  24. Terrestrial adaptations?
    • · Amniote egg- allows embryo to develop in a contained aqueous environment
    • · Tough, impermeable skin (scales, feathers, hair, skin) – reduces water loss
    • · Kidneys modified to excrete concentrated urine (conserves water)
  25. What is the characteristic of Apoda?
    · Burrowing worm-like amphibians
  26. Examples of Apoda?
    caecilians
  27. Examples of Urdoela?
    salamanders (newts)
  28. What are the characteristics of Anura?
    · Hind legs modified for jumping
  29. Examples of Anura are?
    frogs and toads
  30. Apoda means?
    “legless ones”
  31. Urdoela means?
    “tailed ones”
  32. Anura means?
    “tail-less ones”
  33. Three orders of Amphibians are?
    • Anura
    • Urdoela
    • Apoda
  34. Amphibians characteristics?
    • · Aquatic or terrestrial
    • · Larvae respire via gills
    • · Adults obtain most O2 via moist skin though they have lungs
    • · 3-chambered heart
    • · External fertilization (most)
    • · Oviparous (most)
    • · Most restricted to moist environments (skin and eggs lose water in dry air)
    • · Must return to water to reproduce

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