Marine Biology Exam III
LET'S GET IT ON
- 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
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