2013 science chapter 3 section 2

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Gogoflash
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196214
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2013 science chapter 3 section 2
Updated:
2013-01-29 22:05:30
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Science lesson
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  1. A fish is a
    Vertebrate
  2. A fish uses what what to move
    Fins
  3. Most fishes have  three Characteristics
    • Are Ectotherms,
    • Obtain oxygen through gills,
    • Have scales
  4. How do fishes get their oxygen from water
    5 steps
    • 1. As a fish swims it opens its mouth and take a gulp of water
    • 2. The water moves through the throat to the gills
    • 3. As water flows over gills, oxygen moves from the water into fishieys blood
    • 4. At the same time carbon dioxide moves out of the blood & into the water 
    • 5. Finally, after flowing over the gills, the water flows out of the fish through SLITS BENEATH THE GILLS.
  5. A fish has what kind of circulatory system?
    Closed
  6. A fish has how many chambers to their heart
    2
  7. What helps a fish to swim?
    Fins
  8. Most of the movements of fishes have 2 functions
    • 1. obtaining food
    • 2. Reproduction
  9. 2 things that help fish find food & avoid predators?
    • 1. The nervous system
    • 2. Sense organs
  10. The 3 major groups of fishes are?
    • Jawless fishes
    • cartilaginous fishes
    • bony fishes
  11. True or false
    Fishes have lived on earth longer than any other kind of vertebrae
    True
  12. True or false
    Fishes are organized into three main groups based on the structures of their mouth and the types of skeletons they have
    True
  13. name a skeleton more flexible than bone
    Cartilage
  14. name the 2 kinds of jawless fishes
    • 1. hagfishes
    • 2. Lampreys
  15. Cartilaginous Fishes have 3 things
    they are made of?
    • 1.jaws
    • 2.scales
    • 3.skeletons

    cartilage
  16. Name three kinds of cartilaginous fishes?
    Sharks, rays & skates
  17. What fish cannot pump waster over their gills?
    Sharks
  18. name 2 fish that stay part buried in the sand?
    • Rays
    • skates
  19. True or false cartilaginous fishes are usually carnivores
    True
  20. Name 3 bony fishes
    • Trout
    • tuna
    • goldfishes
  21. name 4 parts of a bony fish
    Jaws

    scales

    • a pocket on each side of the head that holds  the gills
    •  
    • hard bone Skelton
  22. the bony fish Has an organ What is it
    Swim bladder
  23. What regulates the swimbladder
     gas
  24. Bony fish make up about  what percent of all fish species
    95%

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