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Vertebrates

Vertebrates. Mr. Skirbst Life Science Topic 17. Phylum Chordata. Phylum Chordata. Includes all vertebrates. Phylum Chordata. Includes all vertebrates Vertebrate – animal that has a backbone (vertebral column). 3 Characteristics. (at some point in their development).

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Vertebrates

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  1. Vertebrates Mr. Skirbst Life Science Topic 17

  2. Phylum Chordata

  3. Phylum Chordata • Includes all vertebrates

  4. Phylum Chordata • Includes all vertebrates • Vertebrate – animal that has a backbone (vertebral column)

  5. 3 Characteristics • (at some point in their development)

  6. 3 Characteristics • (at some point in their development)

  7. 3 Characteristics 1- Nerve cord – hollow tube near back

  8. 3 Characteristics 1- Nerve cord – hollow tube near back 2- Notochord – long, flexible support rod (vertebral column)

  9. 3 Characteristics 1- Nerve cord – hollow tube near back 2- Notochord – long, flexible support rod (vertebral column) 3- Throat with gill slits (debatable)

  10. 8 Groups of Chordates

  11. 8 Groups of Chordates 6 Groups of Ectotherms “coldblooded” body temp. = outside temp.

  12. 8 Groups of Chordates 2 Groups of Endotherms “warmblooded” body temp. = constant

  13. Fish Water-dwelling vertebrates that have: 1- scales 2- fins 3- gills

  14. 3 main groups of fish 1- jawless – primitive, lack jaws (ex. Lamprey + hagfish)

  15. 3 main groups of fish 2- cartilaginous – no “bones” Skeletons made of cartilage (ex. Sharks & rays)

  16. 3 main groups of fish 2- cartilaginous – no “bones” Skeletons made of cartilage (ex. Sharks & rays) Sharks reproduce internally and must move gill slits to breathe

  17. 3 main groups of fish 3- bony – skeletons of bone (ex. Trout & perch) * also have swim bladders

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