Barrier Islands #2 Ocean Beach And Organisms

21 Questions | Total Attempts: 133

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Barrier Islands #2 Ocean Beach And Organisms - Quiz

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Questions and Answers
  • 1. 
    What is a berm and where is it found?
    • A. 

      The back dune end of the supratidal zone

    • B. 

      The movement of sand offshore during a storm

    • C. 

      The supratidal ledge of sand at the high tide line

    • D. 

      The edge of the swash (shoreface where waves break) zone

  • 2. 
    What is the average salinity of the ocean?
    • A. 

      35 ppt

    • B. 

      55 ppt

    • C. 

      15 ppt

    • D. 

      25 ppt

  • 3. 
    Identify a key adaptation of the mole crab and coquina clam for living in the in the ocean beach intertidal zone:
    • A. 

      Both organisms burrow rapidly into the sand. The coquina clam burrows as a wave recedes. The mole card burrows backward each time a wave advances.

    • B. 

      Both organisms ride the surf to avoid the receding or advancing waves.

    • C. 

      Both organisms hibernate to avoid the receding or advancing waves.

    • D. 

      Though born on the ocean side of the barrier island, both organisms move to the sound to avoid the receding or advancing waves.

  • 4. 
    Ocean beach habitats have three distinct zones:
    • A. 

      The subtidal zone of crashing breakers with swirling sand and shallow water; the intertidal zone, alternately covered and exposed by tidal waters; and the dry, sandy supratidal zone extending to the base of the sand dunes.

    • B. 

      The ocean zone of crashing breakers with swirling sand and shallow water; the salt marsh zone, alternately covered and exposed by tidal waters; and the dry, sandy sand dune zone extending to the base of the sand dunes.

    • C. 

      The shoreface zone of crashing breakers with swirling sand and shallow water; the intertidal zone, alternately covered and exposed by tidal waters; and the dry, sandy subtidal zone extending to the base of the sand dunes.

    • D. 

      The supratidal zone of crashing breakers with swirling sand and shallow water; the intertidal zone, alternately covered and exposed by tidal waters; and the dry, sandy subtidal zone extending to the base of the sand dunes.

  • 5. 
    Oxygen is plentiful in the ocean beach habitat because of which three factors:
    • A. 

      Wind coming off the ocean, the presence of water coming in with the tides and in the space between the sand sediment.

    • B. 

      The presence of water coming in with the tides, salt spray and plants.

    • C. 

      The wind coming off the ocean, salt spray and plants.

    • D. 

      The wind coming off the ocean, the presence of water coming in with the tides and plants.

  • 6. 
    Debris and detritus are deposited ___________________
    • A. 

      At the high tide line.

    • B. 

      At the shoreline.

    • C. 

      Along the shoreface.

    • D. 

      In the intertidal zone.

  • 7. 
    Phytoplankton are_______________________
    • A. 

      Free floating microscopic plants that are the basis of the marine food chain.

    • B. 

      Free floating microscopic animals that are the basis of the marine food chain.

    • C. 

      Free floating microscopic scavengers that support the marine food chain.

    • D. 

      Diatoms that cause red tide and are toxic to the marine food chain.

  • 8. 
    Intertidal beach life is nourished largely by _______________ brought in by ____________.
    • A. 

      Plankton, tides.

    • B. 

      Zooplankton, waves.

    • C. 

      Phytoplankton, waves.

    • D. 

      Plankton, waves.

  • 9. 
    Most supratidal animals are ____________ that feed on debris and detritus along the strand line.
    • A. 

      Scavengers

    • B. 

      Decomposers

    • C. 

      Producers

    • D. 

      Herbivores

  • 10. 
    The action of ____________________ sweeps larger shell particles and sand across the substrate surface, sometimes causing abrasions or burying plants and animals.
    • A. 

      Waves

    • B. 

      Tides

    • C. 

      Longshore current

    • D. 

      Winds

  • 11. 
    Which organism causes "red tide" ?
    • A. 

      Dinoflagellates

    • B. 

      Diatoms

    • C. 

      Gastropods

    • D. 

      Pelecypods

  • 12. 
    Most supratidal animals are______________ that feed on debris along ____________________
    • A. 

      Most supratidal animals are scavengers that feed on debris along the strand line

    • B. 

      Most supratidal animals are herbivores that feed on debris along the high tide line

    • C. 

      Most supratidal animals are carnivores that feed on debris along the low tide line

    • D. 

      Most supratidal animals are omnivores that feed on debris along the surf zone

  • 13. 
    What is a mollusk?
    • A. 

      An organism with a hard shell that encases a soft muscle body

    • B. 

      An organism with a soft shell and a hard interior skeleton

    • C. 

      A bottom dwelling organism that breathes water and uses siphons to feed

    • D. 

      A bottom dwelling organism that uses a muscular foot to dig and capture its prey

  • 14. 
    What is a pelecypod?
    • A. 

      A bivalve, two-shelled mollusk

    • B. 

      A univalve, one shelled mollusk

    • C. 

      A phytoplankton producer

    • D. 

      A zooplankton producer

  • 15. 
    What is a gastropod?
    • A. 

      A univalve, one-shelled marine snail mollusk

    • B. 

      A bivalve, two-shelled marine mollusk

    • C. 

      A phytoplankton producer

    • D. 

      A zooplankton consumer

  • 16. 
    What serves as the primary plant material for the ocean beach intertidal zone?
    • A. 

      Phytoplankton

    • B. 

      Phytoplankton and zooplankton

    • C. 

      Detritus and debris

    • D. 

      Detritus

  • 17. 
    Some gastropods have a radula to assist with feeding.  What is a radula and what does it do?
    • A. 

      A radula is mouth device that looks like spiked tooth-like strap used to drill into a pelecypod (bivalve) which is its prey.

    • B. 

      A radula is a large muscular foot used to pry open the shell of a pelecypod (bivalve) which is its prey.

    • C. 

      A radula is a spiked foot like belt that wedges into a pelecypod (bivalve) which is its prey.

    • D. 

      A radula is a chemosensitive mouth device that is used to poison a pelecypod (bivalve) which is its prey.

  • 18. 
    What is the difference between phytoplankton and zooplankton? 
    • A. 

      Phytoplankton are plant wanderers, producers, made up of single-celled algae. Zooplanktons are animal wanderers made up of tiny animals that are consumers.

    • B. 

      Phytoplankton are animal wanderers, consumers made up of single-celled organisms. Zooplankton are producers, plant wanderers.

    • C. 

      Phytoplankton are consumers, plant wanderers. Zooplankton are animal wanderers.

    • D. 

      Phytoplankton are one celled plant like wanderers. Zooplankton are scavengers.

  • 19. 
    Identify letter  "a" in this beach profile diagram.
    • A. 

      High tide line

    • B. 

      Low tide line

    • C. 

      Shore face

    • D. 

      Swash zone

  • 20. 
    Identify  letter "b" in this beach profile diagram.
    • A. 

      Low tide line

    • B. 

      High tide line

    • C. 

      Shore face

    • D. 

      Near shore sand bar

  • 21. 
    Identify letter "c" in this beach profile diagram.
    • A. 

      Berm

    • B. 

      Wrack line

    • C. 

      Swash zone

    • D. 

      Fore dune

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