Question 1

Salinity refers to _______  .

Accepted Answer

A)   ocean thermal gradient
B)   amount of sea life
C)   salt content
D)   all solid dissolved minerals

Question 2

_______ refers to the mass of all living organisms on Earth.

Accepted Answer

A)   Food web
B)   Biomass
C)   Benthos
D)   Trophic level

Question 3

Consider the below image of a bather easily floating in the Dead Sea, exerting no effort to do so.  Why is it so easy for the sunbather to stay afloat?

Accepted Answer

A)   The thermocline is right near the surface and the temperature differential near her helps her to float.
B)   The low water density in this region helps buoyancy.
C)   The high biological activity produces gases to buoy her.
D)   The high salinity in that body of water buoys her.

Question 4

The open ocean, regardless of depth, where animals swim or float freely is called the_______  zone.

Accepted Answer

A)   pelagic zone
B)   oceanic zone
C)   intertidal zone
D)   photic zone

Question 5

_______ include all organisms that drift with ocean currents.

Accepted Answer

A)   Nekton
B)   Nerithos
C)   Plankton
D)   Benthos

Question 6

Examine the words and/or phrases below and determine the relationship among the majority of words/phrases. Choose the option that does not fit the pattern.

Accepted Answer

A)   plankton
B)   neritic
C)   benthos
D)   nekton

Question 7

Large Blue whales that are up to 30 meters long live primarily on _______ that is/are only about 6 cm long.

Accepted Answer

A)   lobsters
B)   fish
C)   krill
D)   squid

Question 8

The pycnocline is a rapid change in _______ with depth in the ocean.

Accepted Answer

A)   salinity
B)   density
C)   temperature
D)   biomass

Question 9

Why is productivity low in tropical regions?

Accepted Answer

A)   because the low density of the water makes it hard for plankton to float near the surface
B)   because there is too much sunlight
C)   because the deep waters are too warm to maintain a healthy biomass
D)   because the thermocline acts as a barrier to the mixing of surface and deep waters
E)   All of the above are problems.

Question 10

_______ organisms live on or in the ocean bottom.

Accepted Answer

A)   Scavenging
B)   Benthonic
C)   Planktonic
D)   Nektonic
E)   none of these

Question 11

Density in seawater is determined by_______  .

Accepted Answer

A)   salinity
B)   temperature
C)   both temperature and salinity
D)   none of these

Question 12

Organisms, such as algae and bacteria, that drift with ocean currents are known as_______  .

Accepted Answer

A)   nekton
B)   benthos organisms
C)   biomass
D)   plankton
E)   none of these

Question 13

Productivity in the oceans is highest in_______  regions.

Accepted Answer

A)   equatorial
B)   middle latitude
C)   polar
D)   aphotic

Question 14

Feeding stages in the food chain are known as _______ levels.

Accepted Answer

A)   pelagic
B)   photic
C)   trophic
D)   epipelagic

Exam 14: Ocean Water and Ocean Life

Density in seawater is determined by_______ .

Correct Answer
verified

Salinity refers to _______ .

Correct Answer
verified

Consider the below image of a bather easily floating in the Dead Sea, exerting no effort to do so. Why is it so easy for the sunbather to stay afloat?

Correct Answer
verified

Feeding stages in the food chain are known as _______ levels.

Correct Answer
verified

Why is productivity low in tropical regions?

Correct Answer
verified

_______ refers to the mass of all living organisms on Earth.

Correct Answer
verified

Examine the words and/or phrases below and determine the relationship among the majority of words/phrases. Choose the option that does not fit the pattern.

Correct Answer
verified

Organisms, such as algae and bacteria, that drift with ocean currents are known as_______ .

Correct Answer
verified

The pycnocline is a rapid change in _______ with depth in the ocean.

Correct Answer
verified

Large Blue whales that are up to 30 meters long live primarily on _______ that is/are only about 6 cm long.

Correct Answer
verified

Productivity in the oceans is highest in_______ regions.

Correct Answer
verified

The open ocean, regardless of depth, where animals swim or float freely is called the_______ zone.

Correct Answer
verified

_______ include all organisms that drift with ocean currents.

Correct Answer
verified

_______ organisms live on or in the ocean bottom.

Correct Answer
verified

Exam 14: Ocean Water and Ocean Life

Density in seawater is determined by_______ .

Correct AnswerverifiedShow Answer

Salinity refers to _______ .

Correct AnswerverifiedShow Answer

Consider the below image of a bather easily floating in the Dead Sea, exerting no effort to do so. Why is it so easy for the sunbather to stay afloat?

Correct AnswerverifiedShow Answer

Feeding stages in the food chain are known as _______ levels.

Correct AnswerverifiedShow Answer

Why is productivity low in tropical regions?

Correct AnswerverifiedShow Answer

_______ refers to the mass of all living organisms on Earth.

Correct AnswerverifiedShow Answer

Examine the words and/or phrases below and determine the relationship among the majority of words/phrases. Choose the option that does not fit the pattern.

Correct AnswerverifiedShow Answer

Organisms, such as algae and bacteria, that drift with ocean currents are known as_______ .

Correct AnswerverifiedShow Answer

The pycnocline is a rapid change in _______ with depth in the ocean.

Correct AnswerverifiedShow Answer

Large Blue whales that are up to 30 meters long live primarily on _______ that is/are only about 6 cm long.

Correct AnswerverifiedShow Answer

Productivity in the oceans is highest in_______ regions.

Correct AnswerverifiedShow Answer

The open ocean, regardless of depth, where animals swim or float freely is called the_______ zone.

Correct AnswerverifiedShow Answer

_______ include all organisms that drift with ocean currents.

Correct AnswerverifiedShow Answer

_______ organisms live on or in the ocean bottom.

Correct AnswerverifiedShow Answer

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