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An Introduction to the World's Oceans, 10/e
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Multiple Choice Quiz
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The Plankton: Drifters of the Open Ocean
Multiple Choice Quiz
1
Which of the following are not members of the phytoplankton?
A)
diatoms
B)
coccolithophores
C)
silicoflagellates
D)
radiolarians
E)
none of the above
2
The dominant phytoplankton from the polar zone to the temperate zone are the:
A)
diatoms.
B)
coccolithophores.
C)
foraminiferans.
D)
radiolarians.
E)
dinoflagellates.
3
Dinoflagellates obtain their nourishment by:
A)
photosynthesis.
B)
the direct ingestion of organic material.
C)
chemosynthesis.
D)
A and B
E)
all of the above
4
Zooplankton are:
A)
herbivores.
B)
carnivores.
C)
omnivores.
D)
A and B
E)
A, B, or C
5
Baleen whales feed mainly on:
A)
copepods.
B)
krill.
C)
chaetognaths.
D)
radiolarians.
E)
foraminiferans.
6
Plankton cells are autotrophic. This means they:
A)
are self-feeding.
B)
move independently of each other.
C)
reproduce asexually.
D)
require normal salinity.
E)
require sunlight.
7
The smallest plankton are the:
A)
nannoplankton.
B)
microplankton.
C)
ultraplankton.
D)
net plankton.
E)
meroplankton.
8
A rapid increase in phytoplankton population that can discolor the water is called a:
A)
growth spurt.
B)
bloom.
C)
explosion.
D)
expansion.
E)
inundation.
9
Zooplankton are:
A)
herbivores.
B)
carnivores.
C)
omnivores.
D)
all of the above
E)
none of the above
10
Some phytoplankton have whip-like appendages called ______ that are used for limited mobility.
A)
tails
B)
wings
C)
swooshes
D)
limbs
E)
flagella
11
Baleen whales feed on:
A)
krill.
B)
euphausids.
C)
coccolithophores.
D)
diatoms.
E)
A and B above
12
Copepods and euphausids double their populations ______ each year.
A)
once
B)
ten to fifteen times
C)
three to four times
D)
six to eight times
E)
about ten times
13
Jellyfish are members of a group of animals called:
A)
Coelenterata or Cnidaria.
B)
Tintinnids.
C)
Ctenophores.
D)
Chaetognaths.
E)
Euphausia.
14
Zooplankton that spend only a portion of their lives as plankton are called:
A)
holoplankton.
B)
meroplankton.
C)
benthoplankton.
D)
auxoplankton.
E)
ctenoplankton.
15
Which of the following organisms spend a portion of their lives as plankton?
A)
snails
B)
barnacles
C)
starfish
D)
crabs
E)
All of the above are correct.
16
The most numerous organisms in the oceans are the:
A)
nekton.
B)
phytoplankton.
C)
benthos.
D)
zooplankton.
E)
bacteria.
17
Organisms that thrive under conditions that would be fatal to most other lifeforms are called:
A)
auxophiles.
B)
dangerphiles.
C)
hazardoids.
D)
extremophiles.
E)
none of the above
18
Viruses:
A)
are highly successful parasites.
B)
are unable to carry on metabolic processes by themselves.
C)
can only replicate inside of a host cell.
D)
may infect planktonic bacteria.
E)
can do all of the above.
19
Toxic blooms of single-celled organisms that discolor the water are often called:
A)
green floods.
B)
red tides.
C)
brown pools.
D)
blue slicks.
E)
yellow stains.
20
A concentration of zooplankton in a thin layer along a pycnocline or at a preferred light intensity:
A)
can reflect sound.
B)
is called a deep scattering layer.
C)
can provide a rich food source for carnivorous phytoplankton.
D)
can do A and B above.
E)
can do none of the above.
21
A significant food source for planktonic larvae and single celled protozoa is _________.
A)
sinking particles
B)
veliger
C)
larvae for oysters and clams
D)
marine bacteria plankton
22
A jellyfish is an example of:
A)
phytoplankton.
B)
bacterioplankton.
C)
zooplankton.
D)
viroplankton.
23
Which of the following is not an example of a marine phytoplankton?
A)
cyanobacteria
B)
diatom
C)
green algae
D)
radiolarian
24
Marine phytoplankton are responsible for what percentage of primary productivity globally?
A)
5
B)
10
C)
25
D)
50
25
All zooplankton are:
A)
heterotrophs.
B)
autotrophs.
C)
meroplankton.
D)
holoplankton.
26
Which of the following is an example of meroplankton?
A)
Portuguese-man-of-war
B)
Pteropod
C)
Crab larvae
D)
Copepod
27
Which type of phytoplankton cause paralytic shellfish poisoning?
A)
dinflagellates
B)
diatoms
C)
radiolarians
D)
cyanobacteria
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