biology cards

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biology cards
2011-04-26 20:25:33
chapter test

10th grade
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  1. Photic zone
    recieves sunlight
  2. aphotic zone
    • no sunlight
    • adaptations: slow metabolism, large jaws, expandable stomachs
  3. neretic zone
    extends from the intertidal zone to the end of the continental shelf
  4. oceanic zone
    • beyond the shelf
    • pelogic zone- open ocean
    • benthic zone- ocean bottom
    • productivity per sq. meter- low
    • total productivity- high
  5. intertidal zone
    • crabs, clams, mussels, oysters, sea star
    • 2 problems: force of crashing waves, dehydration
  6. neritic zone
    • most productive zone in the ocean
    • shallow enough for photosynthesis to occur
  7. estuary
    where fresh water flows into the sea
  8. freshwater ecosystems
    lakes, ponds, rivers, wetlands
  9. oligatrophic vs. eutrophic
    • organic matter: eutrophic rich- oligatrophic little
    • clarity: olligatrophic clearer
    • decay bacteria: eutrophic has more
    • disolved o2- olligatrophic > eutrophic
  10. marshes
    • non woody plants
    • cattails
  11. swamps
    • woody plants
    • trees and shrubs
  12. bog
    dominated by sphagum mosses
  13. freshwater wetlands
    • most productive freshwater ecosystem
    • wide variety of organisms
  14. biodiversity
    variety of forms of life in an area
  15. species richness
    number of unique species
  16. species eveness
    relative number of each species
  17. genetic diversity
    amount of variation in the genetic material within all members of the population
  18. Smog
    water vapor + nitrogen oxides+ ozone (O3)
  19. ozone
    • in the lower atmosphere- harmful
    • stratosphere- not harmful blocks UV rays
  20. acid precipitation
    some air pollutants combine with water in the atmosphere and form acids
  21. biological magnification
    • process in which chemicals become more concentrated in organisms the higher on the food chain its on
    • example: DDT
  22. keystone species
    • affect many species in a community
    • example: sea otter
  23. sustainability
    • ability to meet human needs so the human population can survive indeffinetly
    • approaches:
    • new technology for uses such as energy production, slow or reverse human population growth, reduce our consumption of resources