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5 Written questions

5 Matching questions

  1. transitional aquatic ecosystems
  2. headwater
  3. low-tide zone
  4. corals
  5. aphotic zone
  1. a aquatic environments that are a combination of two or more different environments;
  2. b water in rivers and streams flows in one direction, beginning at a source called
  3. c organisms that depend on light cannot live in this zone
  4. d covered wth water unless the tide is unusually ow
  5. e soft-bodied invertebrates that live in the stonelike structures

5 Multiple choice questions

  1. On the seafloor along the boundaries of the Earth's plates, hydrothermal vents spew large amounts of hot water, hydrogen sulfide and other minerals in this zone
  2. free-floating photosynthetic autotrophs that live in freshwater or marine ecosystems
  3. area to a depth of about 200M of the pelagic zone
  4. areas of land such as marshes, swamps and bogs that are saturated with water and that suport aquatic plants
  5. area of intertidal zone that is dry most of the time

5 True/False questions

  1. 2.5 percent of Earth's waterfreshwater

          

  2. benthic zonemany species of fishes, octopuses and squids live in this zone

          

  3. sedimentmaterial that is deposited by water, wind or glaciers

          

  4. coral reef animalswidely distributed in warm shallow marine waters

          

  5. major freshwater ecosystemsinclude ponds, lakes, streams, rivers and wetlands