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2 1energyflowinecosystems-090521150136-phpapp02

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Transcript

  • 1. Energy Flow in Ecosystems Mr. Schumaier
  • 2. What energy roles do organisms play in an ecosystem? 1
  • 3. Organism's play one of three roles: Producer Consumer Decomposer 1
  • 4. What is a PRODUCER? 2
  • 5. An organism that can make its own food such as grass and trees. 2
  • 6.  
  • 7. What is a CONSUMER? 3
  • 8. An organism that gets its energy by feeding on other organisms 3
  • 9.  
  • 10.  
  • 11.  
  • 12. Describe HERBIVORES, CARNIVORES, OMNIVORES, & SCAVENGERS. 4
  • 13. Herbivores Eat only plants such as caterpillars, cattle, and deer. 4
  • 14. Carnivores Eats only animals such as lions, spiders, and snakes. 4
  • 15. Omnivore Eats both plants and animals such as Crows, goats, and most humans. 4
  • 16.  
  • 17. Scavenger A carnivore that eats the bodies of dead organisms such at catfish and vultures. 4
  • 18. What do herbivores and carnivores have in common? 5
  • 19. Herbivores and carnivores are similar in that both are consumers; they cannot make their own food but must obtain food by eating other organisms. 5
  • 20.  
  • 21. What are DECOMPOSERS? 6
  • 22. An organism that breaks down wastes and dead organisms and returns raw material to the environment Bacteria, fungi, molds, mushrooms 6
  • 23.  
  • 24.  
  • 25. What is the FOOD CHAIN? 7
  • 26. A series of events in which one organism eat another and obtains energy. 7
  • 27.  
  • 28.  
  • 29. What is a FOOD WEB? 8
  • 30. Many overlapping food chains in an ecosystem. 8
  • 31.  
  • 32. What can be shown through the use of food chain and food web diagrams? 9
  • 33. Food Chain shows one possible path that energy moves through an ecosystem. Food web is a more realistic way to show the flow of energy through an ecosystem 9
  • 34. What is an ENERGY PYRAMID? 10
  • 35. A diagram that shows the amount of energy that moves from one feeding level to another in a food web. 10
  • 36.  
  • 37. How much energy is available at each level of an energy pyramid? 11
  • 38. Third-level consumers = 1kcal Second-level consumers = 10 kcal First-level consumers = 100 kcal Producers = 1,000 kcal 11
  • 39. The most energy is available at the producer level. At each level in the pyramid, there is less available energy than at the previous level. 11
  • 40. Why are food webs a more realistic way of portraying ecosystems than food chains? 13
  • 41. Most producers and consumers are part of many overlapping food chains. 13
  • 42. http://www.youtube.com/watch?v=sbWyrcY5i3s
  • 43. The End

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