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Frogs
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Transcript

  • 1. Frog Life Cycle Created by Esther Anguiano
  • 2. Frogs A frog is an amphibian… cold blooded has no scales and generally returns to water to breed
  • 3.
    • Lots of eggs
    • male frog fertilizes eggs
    • single eggs
    • female frog leaves
    Spawn
  • 4. Eggs
    • Found in calm or static waters
    • Slits into 2
    • then into 4 and then 8..etc. .
    • Takes 6-21 days to hatch
  • 5. Tadpole
    • Feeds on remaining
    • yolk
    • Fragile
    • sticks to floating
    • weeds or grass in
    • water
    • 7-10 days-begins to
    • swim
    • (feeds on algae)
  • 6. Tadpole with Legs
    • 6-9 weeks
    • tiny legs sprout
    • head and body are larger
    • eats insects and some plants
    • arms bulge
    • after 9 weeks tiny frog with long tail
  • 7. Froglet
    • A Froglet looks the same, but has a tiny tail...
  • 8. …… .Frog……. “ Now these frogs will start the whole process again…finding mates and creating new froggies.”
  • 9. Let’s Review. . . . . .
  • 10. Works Cited University of Oregon, www.uoregon.edu /.../picturegallery/frogs.jpg April 27, 2007. The Barn Owl Trust, http://www.barnowltrust.org.uk/content_images/desktopBackground/Frog_spawn.jpg , April 27,2007. Tadpole, http://www.aecos.com/CPIE/Tadpole2.jpg , April 23,2007. Frogs, http://www.poison-frogs.nl/e0207.html , April 23, 2007. All About Frogs, http://allaboutfrogs.org/weird/general/whatisfrog.html , April 24, 2007.