Study

Marine Biology mod 8

  •   0%
  •  0     0     0

      Back   Restart
  • What do intra and inter mean?
    Intra: within, inter:between: intraspecific, within a species, interspecific between species.
  • Is there an aphotic zone on the continental shelf?
    Yes the outer shelf.
  • How are the boundaries of various zones in the ocean defined?
    Physical characteristics like temperature, depth and light penetration
  • What is Carrying capacity?
    The largest population size that can be supported by a specific area with its available resources
  • Can one habitat be affected by another habitat? Give an example?
    River delta is affected by rain in the mountains. Sunlight blocked by a highrise building will affect the coral growth near the shore.
  • How does gaseous nitrogen get changed into the more usable form Nitrate?
    nitrogen fixers like Cyanobateria change gaseous nitrogen to nitrates (and a few other bacteria)
  • Do all mutualism forms of symbiosis need each other to survive? give an example.
    No, cleaner shrimp remove parasites from other fish but the cleaner fish can find food elsewhere.
  • What is the main source of carbon for living organisms?
    Gaseous CO2. Primary producers use CO2 to produce sugars. Unlike N fixation, where bacteria change N2 into nitrates. (the bacteria is not a primary producer.
  • List and describe the habitat regions of the ocean discussed in this module. (6 zones)
    Splash zone-never under water,intertidal zone,inner shelf(photic),outer shelf,bathyal zone(aphotic),abbysal,hadal always under water.
  • Can one habitat be affected by another habitat? Give an example?
    River delta is affected by rain in the mountains. Sunlight blocked by a high rise building will affect the coral growth near the shore.
  • define commensalism and give an example.
    Long spined black sea urchin and urchin crab. (protection for the crab, no benefit or harm to the sea urchin
  • What is a Limiting resource?
    a factor required for a population to grow but present in small quantities in an ecosystem
  • What type of symbiosis is seen with an isopod attached to a fish?
    Parasitism. (isopod: a crustacean that is several centimeters long ans attaches itself to a fish and feeds off the tissue)
  • How does photosynthesis participate in Carbon fixing?
    It uses CO2 and creates sugars.
  • What is Ecology?
    the study of relationship between an organism and its environment
  • Does a parasite always live inside the host?
    No, the isopod attaches to the outside of a fish
  • What is aphotic?
    area where no light reaches, therefor no photosynthesis can occur.
  • What is Productivity?
    the rate of photosynthesis carried on in an ecosystem, minus the rate of respiration of the photosynthetic organisms
  • Why are decomposers important?
    They breakdown organic matter bound up in the dead bodies so the material is available again in the ecosystem
  • What is Benthic?
    describing organisms that live on the bottom of the ocean
  • What is Detritus?
    dead organic matter and the decomposing "organisms" that live among it (p252)
  • What does the root “troph” mean?
    Nourishment or food.
  • What is Nekton?
    able to swim against ocean currents
  • What is Pelagic?
    an organism that lives in the water column
  • How does gaseous nitrogen get changed into the more usable form Nitrate?
    Cyanobateria changes are nitrogen fixers (and a few other bacteria)
  • define mutualism and give two examples of it from the chapter.
    Zooxanthellae and coral, cleaner shrimp and many fish, clown fish and sea anemone.
  • What does eco (oikos) mean?
    house or home
  • What does "ology" (logos) mean?
    word, or the study of
  • Identify producers, primary consumers, and secondary consumers, and tertiary consumers.
    primary producer- ice algae, phytoplankton. primary consumer - zooplankton. secondary consumers-Bowhead whale
  • What happens if there is not enough of the kind of bacteria that do denitrification in a fish tank?
    This kind of bacteria converts ammonia into gaseous nitrogen, so the ammonia levels will rise.
  • Do all primary producers. photosynthesize at the same rate?
    no, some are more productive than others
  • The population of a certain fish is noted to decrease even though the birth rate appears to be the same.  What abiotic factors might cause this?  What biotic factors might cause this?
    A- salinity, dissolved CO2 (affecting food source)water temperature, B-parasites, predators,
    • Your experience on this site will be improved by allowing cookies.