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AS Warm-Up

AS Warm-Up. Begin work on “What’s in a Name?” (on demo table). Fish Basics. Kingdom Phylum 3 classes. Agnathans. Lampreys, hagfish Long, cylindrical bodies Round mouth, ring of hooks or teeth. Chondrichthyes. Sharks and rays Skeleton is cartilage Mouth on underside of body

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AS Warm-Up

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  1. AS Warm-Up Begin work on “What’s in a Name?” (on demo table)

  2. Fish Basics • Kingdom • Phylum • 3 classes

  3. Agnathans • Lampreys, hagfish • Long, cylindrical bodies • Round mouth, ring of hooks or teeth

  4. Chondrichthyes • Sharks and rays • Skeleton is cartilage • Mouth on underside of body • Lateral line well-developed

  5. Mouth picture

  6. Dogs kill more people each year than sharks do!

  7. Shark Gills • External gill slits • 5-7 pairs of gills • Don’t pump – water passes over

  8. Sharks have no swim bladder… • Must swim constantly (pelagic), or… • Bottom-dwellers (benthic) • Spiracles

  9. Shark Reproduction • Internal fertilization • Live-bearing – placental and non-placental • Egg-laying • Mermaid’s purse

  10. Rays • Generally benthic • Wide and flat • Enlarged pectoral fins • Some elongated, stinging tails

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