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Earthworms

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Science extra credit project.

Science extra credit project.


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Transcript

  • 1. Ryan Kollmann and Michael Seehusen present Earthworms
  • 2. Specific Classification
    • Kingdom: Animilia
    • 3. Phylum: Annelida
    • 4. Class: Clitellata
    • 5. Family: Lumbricadae
    • 6. Order: Haplotaxida
    • 7. Genus: Lumbricus
    • 8. Species: L. terrestris
  • 9. Physical Characteristics
    • Can measure up to 6 meters
    • 10. Look like a tube inside of a tube
    • 11. The outer layer is made up of a series of circles wrapped around the body
    • 12. The inner layer of muscle runs along the length of the body
    • 13. Food enters in the mouth and exits out the anus
  • 14. Habitat
    • Main habitat is soil
    • 15. Decaying plant matter or manure
    • 16. Decaying conifer logs
    • 17. Mud near streams
  • 18. What it Eats
    • They don't eat dirt, like many people believe
    • 19. Earthworms eat decaying plant and animal matter and they usually swallow some soil with it
    • 20. The soil passes right through and exits as castings
    • 21. The decaying matter is what earthworms actually need for nutrients and energy
  • 22. Reproductive Information
    • Hermaphrodites, cannot fertilize themselves
    • 23. Mating pair overlap front ends
    • 24. Earthworms are hatched in cocoons for 30 to 60 days
    • 25. Babies are born fully grown except for lack of sex structures
    • 26. Average life span is 4-8 years
  • 27. Enemies
    • Snakes, birds, moles, toads and even foxes are known to eat earthworms
    • 28. Beetles, centipedes, leeches, slugs and flatworms also feed on earthworms
    • 29. Some types of mites parasitize earthworm cocoons or the worms themselves
  • 30. Earthworms and Humans
    • Converting organic matter into rich humus
    • 31. Keeps soil structure open by burrowing
    • 32. Humans often kill them for recreational activities such as fishing
    • 33. Many worms are killed either accidentally or for no real purpose
    • 34. While this may happen frequently, the
    • 35. species is not endangered
  • 36. Interesting Facts
    • Have been kept alive for 6 years, but in the wild probably live two years at the most
    • 37. Do not have lungs, breathe through their skin, and can live under water for a while;
    • 38. Do not come to the surface during rain to escape drowning, but rather to find a mate since their mobility is much better on wet ground
    • 39. Lack eyes but are light sensitive
  • 40. Facts cont.
    • Can detect the motion of a robin (that can hear the earthworm in its burrow)
    • 41. May survive being frozen if the freeze is not too rapid
  • 42. Pictures
  • 43. THE END

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