Marine Biology Exam III

40 Questions | Total Attempts: 187

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Marine Biology Quizzes & Trivia

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Questions and Answers
  • 1. 
    The most abundant group in zooplankton are:
    • A. 

      Larvaceans

    • B. 

      Copepods

    • C. 

      Nanoplankton

  • 2. 
    Krill are most closely related to:
    • A. 

      Worms

    • B. 

      Crabs

    • C. 

      Copepods

    • D. 

      The dude from "Monk"

  • 3. 
    Larvaceans are:
    • A. 

      Planktonic chordates

    • B. 

      Fish larvae

    • C. 

      Deep water crustaceans

  • 4. 
    One of these groups builds a mucus "house"
    • A. 

      Copepods

    • B. 

      Arrow worms

    • C. 

      Larvaceans

  • 5. 
    Only one of these is part of the meroplankton:
    • A. 

      Copepods

    • B. 

      Arrow worms

    • C. 

      Snail larvae

  • 6. 
    Arrow worms are:
    • A. 

      Detritus feeders

    • B. 

      Carnivores

    • C. 

      Parasites

  • 7. 
    Most nekton feed on:
    • A. 

      Zooplankton

    • B. 

      Phytoplankton

    • C. 

      Plankton and nekton

  • 8. 
    One of the following is an adaptation to the planktonic way of life except one:
    • A. 

      Decrease in drag

    • B. 

      Spines

    • C. 

      Small size

  • 9. 
    The storage of lipids within the body is an adaptation in plankton since lipids:
    • A. 

      Make cells heavier

    • B. 

      Are less dense than water

    • C. 

      Increase body density

  • 10. 
    The neuston consist of animals that:
    • A. 

      Swim against currents

    • B. 

      Do complex math equations

    • C. 

      Float on the surface

    • D. 

      Spend their entire lives as plankton

  • 11. 
    Countershading is a form of:
    • A. 

      Protective coloration

    • B. 

      Defensive spines

    • C. 

      Dorsal fins

  • 12. 
    The rete mirabile found in some fishes is involved in:
    • A. 

      Increasing speed

    • B. 

      Decreasing buoyancy

    • C. 

      Conserving body heat

  • 13. 
    Zooplankton that migrates vertically:
    • A. 

      Hibernate at night and feed during the day

    • B. 

      Stay below the photic zone during the day, and feed at the surface at night.

    • C. 

      Migrate up and down but always below the photic zone

  • 14. 
    Most animals in the epipelagic are omnivores. This means that they eat:
    • A. 

      Producers and consumers

    • B. 

      Detritus

    • C. 

      Neither

  • 15. 
    What is the relationship between dissolved organic matter (DOM) and bacteria in the epipelagic?
    • A. 

      Bacteria feed on DOM, making it available to others in the food chain that feed on bacteria

    • B. 

      Bacteria feed on DOM and thus make it unavailable to other animals

    • C. 

      Bacteria cannot utilize DOM

  • 16. 
    The most common limiting nutrient in the ocean is:
    • A. 

      Silicon

    • B. 

      Oxygen

    • C. 

      Nitrogen

    • D. 

      Awesomegen

  • 17. 
    Where is the primary production the least?
    • A. 

      Coasts

    • B. 

      Gyres

    • C. 

      Upwelling along coasts

  • 18. 
    The fall bloom in temperate waters is caused when:
    • A. 

      Primary production decreases as nutrients increase

    • B. 

      Primary production increases as the number of zooplankton increases

    • C. 

      Primary production increases as nutrients increase

  • 19. 
    Equatorial upwelling occurs as a result of:
    • A. 

      Temperature changes at the equator

    • B. 

      The divergence of equatorial surface currents

    • C. 

      The convergence of equatorial surface currents

  • 20. 
    The southern Oscillation can be described as:
    • A. 

      Relative changes between two pressure systems

    • B. 

      Variation in wind speed over the pacific ocean

    • C. 

      Relationship between surface area and high altitude pressures

  • 21. 
    The mesopelagic zone refers to the ocean depths in which there is:
    • A. 

      Dim light, but not enough for plant growth

    • B. 

      Enough light for primary production for bacteria

    • C. 

      No light at all

  • 22. 
    In addition to food, deep-water animals depend on the surface for:
    • A. 

      Oxygen

    • B. 

      Carbon dioxide

    • C. 

      Swag

  • 23. 
    The mesopolagic zone extends from about 200 m to about
    • A. 

      1,000 m

    • B. 

      5000 m

    • C. 

      10,000 m

  • 24. 
    The main thermocline is located:
    • A. 

      In the mesopelagic

    • B. 

      Above the mesopelagic

    • C. 

      Below the mesopelagic

  • 25. 
    Photophores are:
    • A. 

      Specialized eyes

    • B. 

      Buoyancy-regulating organs

    • C. 

      Light producing organs

  • 26. 
    Common adaptations of mesopelagic fish include all of the following except
    • A. 

      Large mouths

    • B. 

      Large size

    • C. 

      Extensible jaws

  • 27. 
    Non-vertical migrating mesopelagic fish are characterized by:
    • A. 

      Large size

    • B. 

      Large eyes

    • C. 

      Large swim bladders

  • 28. 
    The deep-scattering layers (DSL) is a sound-reflecting layer that consists of:
    • A. 

      Non-migrating fish

    • B. 

      Eipelagic fishes

    • C. 

      Migrating fish

  • 29. 
    The tubular eyes of some mid-water animals are adapted for:
    • A. 

      Increasing field vision

    • B. 

      Producing light

    • C. 

      Seeing in complete absence of light

  • 30. 
    The presence of bioluminescent organs on the underside of mid-water fish is involved in
    • A. 

      Countershading

    • B. 

      Cryptic coloration

    • C. 

      Counterillumination

  • 31. 
    Bioluminescence is used by mid-water animals in all of these except in:
    • A. 

      Communication

    • B. 

      Warning coloration

    • C. 

      Attracting prey

  • 32. 
    The water below the oxygen minimum layer has:
    • A. 

      No oxygen at all

    • B. 

      Only very small traces of oxygen

    • C. 

      Most of the oxygen it had when it left the surface

  • 33. 
    The pelagic animals living in the waters of the ocean trenches is included in one of these zones:
    • A. 

      Bathypelagic

    • B. 

      Abyssopelagic

    • C. 

      Mesopelagic

  • 34. 
    The zone immediately below the bathyal zone is called the:
    • A. 

      Abyssal

    • B. 

      Hadal

    • C. 

      Subtidal

    • D. 

      Bikini bottom

  • 35. 
    Deep sea pelagic fish are characterized by all of the following except:
    • A. 

      Flabby muscles

    • B. 

      Large mouth and teeth

    • C. 

      Color spotted with red

  • 36. 
    An important feeding adaptation among deep sea fish:
    • A. 

      migration to shallower water to feed

    • B. 

      Feeding on males, hence the term, "male pasitism"

    • C. 

      Ability to eat prey bigger than themselves

  • 37. 
    Pheromones are special chemicals that are used to:
    • A. 

      Digest food

    • B. 

      Attract mates

    • C. 

      Catch prey

  • 38. 
    The deep sea benthos consists mostly of:
    • A. 

      Deposit feeders

    • B. 

      Filter feeders

    • C. 

      Herbivores

  • 39. 
    The Deep-sea scavengers include animals that feed on:
    • A. 

      Deep-sea plankton

    • B. 

      Dead animals

    • C. 

      Bottom meiofauna

  • 40. 
    The "experimental lunch" that was left on the Alvin as it rested on the bottom revealed that deep sea bacteria:
    • A. 

      Do not exist at all

    • B. 

      May cause diseases in humans exposed to them

    • C. 

      Grow slower than shallow-water species

    • D. 

      Hate lunch