Biology t2

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Author:
ryan13yates
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137624
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Biology t2
Updated:
2012-02-25 20:10:20
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Biology 104
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Biology 104 test 2
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  1. How are chordates types of skeletons different than invertebrates?
    They skeleton is internal and the muscle is attached to the outter surface.
  2. What is a notochord?
    A dorsal supporting rod.
  3. Which part of the dorsal tubular nerve cord becomes the brain?
    Anterior
  4. What becomes functioning gills for nonvertebrate chordates?
    Pharyngeal pouches
  5. What is the name of the tail that extends beyond the anus?
    Postanal tail
  6. Chordates are divided into what two groups?
    Cephalochordates and urochordates.
  7. Lancets are _________chordates.
    cephalo
  8. Sea squirts are ________chordates.
    uro
  9. What are the four main characteristics of invertebrate chordates?
    Notochord

    Dorsal tubular nerve cord

    Pharyngeal pouches

    Postanal tail
  10. What are the four main characteristics of vertebrate chordates?
    Vertebral column

    Skull

    Endoskeleton

    Internal organs
  11. Jawed fishes and all other vertebrates are called _______.
    gnathostomes
  12. Gnathostomes means _______________.
    animals with jaws
  13. What were the first vertebrates to have have limbs?
    Amphibians
  14. Terrestrial vertebrates are ___________. (four limbs)
    tetrapods
  15. Producing an amniotic egg means that ________ are fully adapted to living on land.
    reptiles
  16. What is the largest group of vertebrates?
    Fish
  17. Todays jawless fish are called _________.
    agnathans
  18. What are the four characteristics of jawed fish?
    Ectothermy

    Gills

    Cartilaginous or bony endoskeleton

    Scales
  19. Embryo's of amniotes have _______________.
    extracellular membranes
  20. Some reptiles are called diapsids because they have ________________________.
    a skull with two openings behing the eyes
  21. Echino means ______.
    spiny
  22. An echinoderm (spiny skin) is a ________.
    Sea star
  23. Stalked sea lillies and feather stars fall into the class _______.
    crinoidea
  24. Pinnules are _____.
    arms
  25. Sea cucumbers fall into the class _______________.
    holothuroidea
  26. Sea urchins and sand dollars belong to class ________.
    echinoidea
  27. The gonads in sea stars are located in the ______.
    arms
  28. Sharks, skates and rays are in the class _____________.
    chondrichthyes
  29. Ray-finned bony fish are in the class ___________.
    osteichthyes
  30. Unlike most fish, the lung fish and coelocanth have _______.
    fleshy fins
  31. Lungfish are mostly located around which three continents?
    Australia

    Africa

    South America
  32. The habitat for coelocanth is in ____________.
    deep water
  33. mt DNA suggests that lobe finned fish are more closely related to ________ than other fish.
    amphibians
  34. The habitat of tiktaalik was in a ______________.
    swampy environment
  35. Tiktaalik is more closely related to ________ than it is to _______.
    • tetrapods
    • fish
  36. Girdles are ______________________________.
    bones in the upper chest and hips where limbs connect
  37. What are some characteristics of amphibians?
    • Limbs with girdles for walking
    • Tounge
    • Ears
    • Larynx
    • Smooth, thin & moist skin
    • Lungs supplement skin gas exchange
  38. What is the exception to amphibians having an afixed upper jaw?
    Gerrothorax pulcherrimus(toilet seat mouth)
  39. What is a spiracle?
    An opening in the skull, usually associted with ears.
  40. Frogs reproduce by amplexus, which is ____________________.
    dumping sperm onto eggs in water
  41. The larvae of frogs is called ______.
    tadpoles
  42. A female salamander picks up the spermataphore with her _______.
    vent
  43. Ectothermic means _________________________.
    to have the same temperature as your surrounding environment
  44. Cauda means _______.
    tails
  45. The amnion is a ____________.
    protective membrane
  46. The function of the chorion is to ___________________________.
    help exchange gases with the outside environment
  47. The function of the yolk sac is to ___________________.
    provide nutrients for the embryo
  48. The allantois serves as a ___________________________.
    receptor for nitrogen waste products
  49. Class reptilia has diverse habitats, however the requirement is that they are all ________.
    warm
  50. Reptilia has keratinized scaly skin, which means _____________________.
    it is filled with a protein called keratin
  51. The order from oldest to newest vertebrate life is:
    • fish
    • amphibians
    • reptiles
    • birds/mamals
  52. Reptiles evolved from ____________.
    select amphibians
  53. ____ out of _____ endemic species found in Alabama are poisonous.
    • 6
    • 40
  54. The eastern coral snake is found in ______________ and usually lives ________.
    • southern teir counties
    • underground
  55. Coral snakes can be identified by _______________.
    red touching yellow.
  56. The coral snake gets the venom into it's enemy by __________________.
    biting them, then twisting it's head to open the skin and allow venom to seep in.
  57. The defense mechanism of a coral snake is to _________________________.
    turn it's tail into a ball and swing it at the enemy
  58. Another name for the cotton mouth snake is ___________.
    water mocason

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