Question 1

The whale shark is the largest species of shark and eats .

Accepted Answer

A)   seals and other smaller marine mammals
B)   fish, especially tuna
C)   plankton near the surface of the water
D)   benthic crabs

Question 2

Seaweeds are .

Accepted Answer

A)   vascular plants
B)   unicellular algae
C)   multicellular algae
D)   phytoplankton

Question 3

Many populations that interact with one another at a particular location form a .

Accepted Answer

A)   niche
B)   habitat
C)   community
D)   genus C

Question 4

Why are organisms in rocky intertidal zones sorted into horizontal bands?

Accepted Answer

A)   Crashing waves remove weaker ones close to the water line.
B)   Some float and are carried upward at high tide.
C)   Some can better tolerate drying out between high tides.
D)   Some need to stay out of the water to breathe.

Question 5

The pelagic realm is massive and supports a great diversity of living things. Considering zonation in the pelagic realm, where would you expect to find most of the organisms and why?

Accepted Answer

Most organisms will be found in the phot...

Question 6

Coral reefs are typically home to . chemosynthetic microbes

Accepted Answer

A)   a large number of species
B)   mostly one dominant species
C)   autotrophs only
D)   chemosynthetic microbes

Question 7

Organisms that are unable to actively move laterally, instead drifting with ocean currents, are called .

Accepted Answer

A)   plankton
B)   nekton
C)   hadal
D)   benthic

Question 8

Which zone corresponds to the lighted photic zone?

Accepted Answer

A)   epipelagic zone
B)   mesopelagic zone
C)   bathypelagic zone
D)   abyssopelagic zone

Question 9

Because of the harsh contrast in salinity, estuaries are among the last productive of marine habitats.

Accepted Answer

A) True 
 B)False

Question 10

An example of a zooplankton that is very important to many pelagic communities is .

Accepted Answer

A)   krill
B)   squid
C)   coccolithophores
D)   diatoms

Question 11

Kelp forests are an example of a(n)  community.

Accepted Answer

A)   estuary
B)   plankton
C)   pelagic
D)   benthic D

Question 12

Hydrothermal vents that support biological communities exist because of primary productivity in the form of chemosynthesis.

Accepted Answer

A) True 
 B)False

Question 13

A is an organism's "address" within its community, while its is its "occupation."

Accepted Answer

A)   habitat; metabolism
B)   niche; resource
C)   neritic zone; selection
D)   habitat; niche

Question 14

Discuss adaptations in fish that function to reduce drag.

Accepted Answer

A fish's drag is determined by...

Question 15

A massed group of individual fish of a single species and size class packed closely together and moving as a unit is called a .

Accepted Answer

A)   flock
B)   herd
C)   clutch
D)   school

Question 16

Which adaptive characteristic do organisms within the deep pelagic and benthic communities have in common?

Accepted Answer

A)   heavy support structures
B)   gigantism
C)   calcium carbonate exoskeleton
D)   gas-filled internal spaces

Question 17

The root-shaped jumble at the base of a seaweed is called a(n)  .

Accepted Answer

A)   holdfast
B)   blade
C)   stamen
D)   aerenchyma

Question 18

Life in productive tropical reefs is best characterized by .

Accepted Answer

A)   extreme competition for food, living space, and mates
B)   very few species, but large numbers of each species
C)   very little competition due to the abundance of resources
D)   mostly symbiotic relationships A

Question 19

Explain why salt marshes and estuaries are among the most productive of marine habitats.

Accepted Answer

As the water is very shallow, there is p...

Question 20

What factors are necessary for plankton productivity and therefore determine where productivity is high and where it is low?

Accepted Answer

Phytoplankton need light and nutrients l...

Exam 10: Marine Communities

The whale shark is the largest species of shark and eats .

Correct AnswerverifiedShow Answer

Seaweeds are .

Correct AnswerverifiedShow Answer

Many populations that interact with one another at a particular location form a .

Correct AnswerverifiedC

Why are organisms in rocky intertidal zones sorted into horizontal bands?

Correct AnswerverifiedShow Answer

The pelagic realm is massive and supports a great diversity of living things. Considering zonation in the pelagic realm, where would you expect to find most of the organisms and why?

Correct AnswerverifiedMost organisms will be found in the phot...View AnswerShow Answer

Coral reefs are typically home to . chemosynthetic microbes

Correct AnswerverifiedShow Answer

Organisms that are unable to actively move laterally, instead drifting with ocean currents, are called .

Correct AnswerverifiedShow Answer

Which zone corresponds to the lighted photic zone?

Correct AnswerverifiedShow Answer

Because of the harsh contrast in salinity, estuaries are among the last productive of marine habitats.

Correct AnswerverifiedShow Answer

An example of a zooplankton that is very important to many pelagic communities is .

Correct AnswerverifiedShow Answer

Kelp forests are an example of a(n) community.

Correct AnswerverifiedD

Hydrothermal vents that support biological communities exist because of primary productivity in the form of chemosynthesis.

Correct AnswerverifiedShow Answer

A is an organism's "address" within its community, while its is its "occupation."

Correct AnswerverifiedShow Answer

Discuss adaptations in fish that function to reduce drag.

Correct AnswerverifiedA fish's drag is determined by...View AnswerShow Answer

A massed group of individual fish of a single species and size class packed closely together and moving as a unit is called a .

Correct AnswerverifiedShow Answer

Which adaptive characteristic do organisms within the deep pelagic and benthic communities have in common?

Correct AnswerverifiedShow Answer

The root-shaped jumble at the base of a seaweed is called a(n) .

Correct AnswerverifiedShow Answer

Life in productive tropical reefs is best characterized by .

Correct AnswerverifiedA

Explain why salt marshes and estuaries are among the most productive of marine habitats.

Correct AnswerverifiedAs the water is very shallow, there is p...View AnswerShow Answer

What factors are necessary for plankton productivity and therefore determine where productivity is high and where it is low?

Correct AnswerverifiedPhytoplankton need light and nutrients l...View AnswerShow Answer

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Most organisms will be found in the phot...
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D

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A fish's drag is determined by...
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A

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As the water is very shallow, there is p...
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Phytoplankton need light and nutrients l...
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