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Microorganisms

Microorganisms. Diana Grier Spring Garden Middle School 2010. Yeasts. Yeasts are unicellular fungi whose colonies resemble those of bacteria. Yeasts are best known as the microorganisms that make bread rise. Fungi reproduce asexually by forming buds that pinch off to produce new cells.

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Microorganisms

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  1. Microorganisms Diana Grier Spring Garden Middle School 2010

  2. Yeasts • Yeasts are unicellular fungi whose colonies resemble those of bacteria. • Yeasts are best known as the microorganisms that make bread rise. • Fungi reproduce asexually by forming buds that pinch off to produce new cells.

  3. Euglena • Euglena are both plantlike and animal-like protists. • Many are autotrophic. • The are abundant in fresh water. • Eyespots help sense light. • Contain chloroplasts like a plant. • Move like an animal. • They are propelled by a long flagellum. • Euglena are unicellular and have no cell wall. • Cilia flagella video • http://www.youtube.com/watch?v=QGAm6hMysTA&NR=1

  4. Paramecium • http://www.youtube.com/watch?v=l9ymaSzcsdY • http://101science.com/paramecium.htm

  5. Daphnia • relatives of the fresh water shrimp Use modified antennae to swim • They produce eggs without mating by a process called parthenogenesis • feed on particles found floating in the water such as algae, bacteria, small crustaceans, and fungi.

  6. Rotifer • Multicellular organism • Beating cilia bring food particles to the mouth and help them move • Can survive long periods in dried or frozen state • Have a nervous, digestive, and excretory system, but no circulatory system

  7. Hydra HydraHydra is another fresh water animal that is most commonly found in pond water. This animal belongs to the class hydrozoa the members of which live mostly in marine water. Hydra is a predatory animal that hunts its prey with the help of specialized stinging cells called cnidocytes. These stinging cells are present in the tentacles that surround the mouth. On the other end of the tubular body of the hydra is a basal disc or foot with which the hydra attaches itself to the substratum.

  8. Amoeba • Single celled organism • Moves by continually changing its body shape • The cell membrane allows Oxygen and carbon dioxide to pass through • Water flows in by osmosis and when too much accumulates it is squirted back out by a contractile vacuole • Reproduces asexually by splitting in two (called binary fission)

  9. Cyclops • Cyclops are crustaceans and related to lobsters, crabs and shrimp.   They are invertebrates with a hard outer shell.  They swim freely about. •   The Cyclops is very small about 2-3mm long with one black or red eye in the middle of its head. The cyclops is named after the one-eyed monster of Greek legend.  It is greenish, straw yellow, or grayish in color.  It goes jerking through the water usually in very large numbers. The females carry the eggs in little side sacs and they multiply rapidly. The cyclops is often seen near water fleas or Daphnia.  Many water animals feed upon the cyclops.  It has a very important role in the food chain. 

  10. Bibliography • http://lhsfoss.org/fossweb/teachers/materials/plantanimal/daphnia.html • http://101science.com/paramecium.htm • http://www.microscope-microscope.org/applications/pond-critters/animals/cyclops.htm • http://www.micrographia.com/specbiol/rotife/homebdel/bdel0100.htm • http://www.buzzle.com/articles/microorganisms-in-pond-water.html • http://www.scienceclarified.com/Al-As/Amoeba.htmlhttp://www.youtube.com/watch?v=QGAm6hMysTA&NR=1

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