Biology Final Part II

40 Questions | Total Attempts: 117

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Biology Quizzes & Trivia

Questions and Answers
  • 1. 
    Succulents are plants that:
    • A. 

      Excrete salts by way of salt glands

    • B. 

      Lose water and salts

    • C. 

      Accumulate water in their tissues

  • 2. 
    The infauna of mud flats feed mostly on:
    • A. 

      Detritus

    • B. 

      Plankton

    • C. 

      Filter feeders

  • 3. 
    Blood rich in hemglobin is an adaptation to:
    • A. 

      Fluctuating salinities

    • B. 

      Wide variations in temperature

    • C. 

      Low oxygen concentrations

  • 4. 
    Zonation in an estuary is made evident by:
    • A. 

      Large number of worms in the mud

    • B. 

      Presence of different species along different horizontal levels in relation to tides

    • C. 

      Tide pools along mud flats

  • 5. 
    The zonation of plants in marshes is determined mostly by:
    • A. 

      Temperature fluctuations

    • B. 

      Geographical location

    • C. 

      Height of the tide

  • 6. 
    The food web in salt marsh communities is characterized by high primary production. Most of this production is made available to other communities in the form of:
    • A. 

      Plant tissue eaten by grazers

    • B. 

      Detritus

    • C. 

      Plant tissue eaten by filter feeders

  • 7. 
    The goegraphical distribution of mangrove forests is mostly determined by:
    • A. 

      Salinity

    • B. 

      Type of sediment

    • C. 

      Temperature

  • 8. 
    Mangroves belong to one of the following groups:
    • A. 

      Flowering plants

    • B. 

      Green algae

    • C. 

      Brown algae

  • 9. 
    Mangrove forests are considered a stage in the ecological succession between marine and terrestrial communities due to the fact  that they:
    • A. 

      Live mostly above water

    • B. 

      Serve as a nesting place for birds`

    • C. 

      Accumulate sediment in their roots

  • 10. 
    Outwelling in estuaries is most important since it:
    • A. 

      Maintains high primary production

    • B. 

      Provides food and nutrients to other communities

    • C. 

      Releases much oxygen

  • 11. 
    Reef-building corals are cnidarians that are characterized by
    • A. 

      Having both a polyp and medusa stage

    • B. 

      Lacking netocysts

    • C. 

      Having only a polyp stage

  • 12. 
    Hermatypic corals are those that:
    • A. 

      Only live in tropical waters

    • B. 

      Are non reef builders

    • C. 

      Have zooxanthellae

  • 13. 
    Planula is the name given to:
    • A. 

      Coral larvae

    • B. 

      The coral skeleton

    • C. 

      Zooxanthallae

  • 14. 
    Zooxanthallae are essential to reef-building corals because the:
    • A. 

      Provide the coral with carbon dioxide

    • B. 

      Filter out harmful solar raditaion

    • C. 

      Help in the deposition of the skeleton

  • 15. 
    The mesenterial filaments of corals are important because they:
    • A. 

      Help deposit the skeleton

    • B. 

      Secrete digestive enzymes

    • C. 

      Produce mucus

  • 16. 
    Sources of food and other essential nutrients for corals include all of the following except:
    • A. 

      Nutrients released by the zooxanthallae

    • B. 

      Calcium carbonate from shells

    • C. 

      Zooplankton captured by tentacles

  • 17. 
    The most important organisms that help form coral reefs, other than reef-building corals, are:
    • A. 

      Sponges

    • B. 

      Corraline algae

    • C. 

      Molluscs

  • 18. 
    Practically all of the sediment that accumulates in a coral reef is of what type?
    • A. 

      Biogenous

    • B. 

      Monogenous

    • C. 

      Heterogenous

    • D. 

      I don't give a crap

  • 19. 
    Reef building corals grow only in shallow water because:
    • A. 

      Salinity varies less in shallow water

    • B. 

      Zooxanthallae need light for photosynthesis

    • C. 

      Nutrients concentrate in shallow water

  • 20. 
    The expulsion ofzooxanthallae due to unfavorable conditions is called?
    • A. 

      Exflagellation

    • B. 

      Exudation

    • C. 

      Bleaching

    • D. 

      Conditioning

  • 21. 
    Eutophication is very detrimental to the development of coral sice it increases:
    • A. 

      The amount of nutrients in the water, stimulating overgrowth

    • B. 

      Temperature of water, since it kills the coral

    • C. 

      The salinity of water, since it kills zooxanthallae

  • 22. 
    The most common type of coral reefs around the world:
    • A. 

      Barrier

    • B. 

      Fringing

    • C. 

      Oyster reefs

  • 23. 
    In a typical fringing reef, most of the live coral is found on the:
    • A. 

      Reef flat

    • B. 

      Reef slope

    • C. 

      Reef crest

  • 24. 
    Fringing and barrier reefs develop:
    • A. 

      In waters along estuaries

    • B. 

      In the open ocean far from land

    • C. 

      Along a coast

  • 25. 
    Spur and groove formations, or buttresses, appear to be the result of:
    • A. 

      Fish grazing

    • B. 

      Wind and waves

    • C. 

      Accumulation of sand

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