Marine Bio Ch 2

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Marine Bio Ch 2
2012-01-18 17:31:19
Marine Bio

Marine Bio Ch 2
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  1. What an organism does in its environment
  2. specific place in environment where an organism is found
  3. The more complex the habitat, the more ______ there will be
  4. group of the same species that occupies a specific area
  5. a population of different species that occupy one habitat at the same time
  6. relatively stable systems that result from the interaction of biological communities and the physical environment
  7. What is homeostasis?
    internal balance relative to external change
  8. When environmental factors are within optimal range what two results are at its best?
    survival and reproduction
  9. What provides energy to all forms of life directly or indirectly. How?
    Sunlight through photosynthesis
  10. ectotherm
    organisms that body temperature depends on the surrounding temperature.
  11. endotherms
    organisms that body temperature depends on its metabolic heat production.
  12. animals that tolerate to wide variation in salt concentrations in which they live.
  13. Stenohaline
    animals that have a limited tolerance to variations in salt concentrations in which they live.
  14. Isosmotic
    having body fluids with same osmotic pressure as the medium in which the animal lives.
  15. Having body fluids that are more concentrated than the surrounding medium.
  16. Hyposmotic
    Having body fluids that are less concentrated than the surrounding medium.
  17. Osmoconformer
    organisms whose body fluids conforms with that of the surrounding medium
  18. organisms who regulate or maintain its osmotic concentration in spite of external concentration changes
  19. What are autotrophs?
    organisms that produce their own food; primary producers
  20. Heterotrophs are?
    organisms that rely on other orgniams for food; consumers
  21. Herbivores
    eat grass, primary consumers
  22. carnivores
    • feed on herbivores (secondary consumers)
    • feed on other consumers (tertiary consumer)
  23. Omnivores
    feed on both producers and other consumers
  24. detritivores
    Feed on poop and dead remains
  25. Decomposers
    break down the tissues of dead organisms
  26. The average amount of energy that is transferred to the trophic levels is ____?
  27. List producer pyramid
  28. Difference between K and r select.
    Development/death rate/adult size/reproductive tempo
    • K:
    • slow, low, generally large, few/year

    • r:
    • rapid, high, generally large, many/year
  29. What are the 3 symbiosis types and explain:
    Parasitism: host has negative benefit; symbiont has positive benefit

    Commensalism: host has no effect and symbiont has positive

    Mutualism: both host and symbiont benefit
  30. Pelagic Division -
    The division of the marine environment composed of the ocean's water.
  31. Benthic Division -
    The division of the ocean environment composed of the ocean bottom.