Ecosystems Lesson 3

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Ecosystems Lesson 3

  1. 1. Organisms and Species Ecosystems
  2. 2. ORGANISMS <ul><li>An organism is any living thing —plant or animal. </li></ul>
  3. 3. SPECIES <ul><li>A species is a group of very similar organisms that can reproduce. </li></ul>
  4. 4. <ul><li>For example; </li></ul><ul><li>A fish is NOT a species, but an Atlantic Salmon IS a species. </li></ul>
  5. 5. How many species and how many organisms?
  6. 6. <ul><li>How many species and organisms? </li></ul>
  7. 7. Two types of Organisms <ul><li>Macro-organisms </li></ul><ul><li>These are organisms that you can see with your naked eye. </li></ul>
  8. 8. Two types of Organisms <ul><li>Micro-organisms </li></ul><ul><li>These are organisms that are too small to see with your naked eye. </li></ul>
  9. 9. LAB RULES <ul><li>Tomorrow we will be looking for micro-organisms </li></ul><ul><li>We will be counting organisms and species. </li></ul>
  10. 10. LAB RULES <ul><li>Listen to ALL instructions carefully </li></ul><ul><li>Handle equipment with care </li></ul><ul><li>No joking around or fooling around </li></ul><ul><li>Be respectful (to everyone) </li></ul>
  11. 11. Cyclops is a copepod <ul><li>These tiny crustaceans make up most of the protein in the ocean. </li></ul>
  12. 12. Daphnia- “water flea” <ul><li>Tiny crustacean </li></ul><ul><li>Eats algae </li></ul><ul><li>Swims in quick, “jerking” movements. </li></ul><ul><li>Not a real flea </li></ul>
  13. 13. Seed Shrimp--Cypris <ul><li>Body is between two shells that can open (like a seed) </li></ul><ul><li>7 pairs of “legs”: (swim, walk, feeding) </li></ul><ul><li>Poor swimmers (only some “legs” used to swim and shell is heavy). Often sink to the bottom </li></ul><ul><li>Filter feeders (bacteria, algae…) </li></ul>
  14. 14. Water Mite <ul><li>Small and usually red, related to spiders. </li></ul><ul><li>Predators that feed on blood. </li></ul><ul><li>Females have egg sacs on their back and appear “swollen” </li></ul>
  15. 15. Roundworms <ul><li>May be as many as one million different species of roundworms! </li></ul><ul><li>Possibly the most numerous animal on earth! </li></ul>
  16. 16. Paramecium <ul><li>Unicellular Protist </li></ul><ul><li>Eats bacteria </li></ul><ul><li>Has cilia for movement and feeding. </li></ul>
  17. 17. Caddisfly larvae
  18. 18. Pond Snail

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