Ecosystem

Card Set Information

Author:
Anonymous
ID:
42194
Filename:
Ecosystem
Updated:
2010-10-14 14:53:40
Tags:
Biology
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Description:
Energy in Ecosystem
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  1. Levels of organization in order
    atoms and molecules - cells - tissues - organ - organ system - organism - population - community - ecosystem - biome - biosphere
  2. mass of all living organisms in an area "living weight"
    biomass
  3. ability to do work
    energy
  4. what kind of energy do we use
    • movement
    • digestion
    • breathing
    • homeostasis
    • metabolism
  5. all living things need ________ to function
    energy
  6. organisms that create their own energy
    autotroph
  7. making energy using sun
    photosynthesis
  8. formation of energy through chemicals
    chemosynthesis
  9. auto = ?
    troph = ?
    self, feeder
  10. organisms that get their energy from another organism
    heterotroph
  11. plant eater
    herbivore
  12. meat eater
    carnivore
  13. meat AND plant eaters
    omnivore
  14. dead organism eaters
    detritovore
  15. hetero = ?
    other
  16. each step in a food chain is called a ________
    trophic level
  17. a representation of the flow of energy
    trophic level
  18. ecological models used to show the flow of energy (2)
    food webs, and food chains
  19. Each level of a food web or food chain gets it energy how?
    from the previous level
  20. a simple model that shows how energy flowd through an ecosystem
    food chain
  21. more complex feeding relationships
    food web
  22. why are food webs more complex than food chains?
    each organism feed on more than one species

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