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An Introduction to the World's Oceans, 10/e
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The Nekton: Free Swimmers of the Sea
Multiple Choice Quiz
1
Marine mammals are:
A)
ectotherms.
B)
air breathers.
C)
endotherms.
D)
A and B
E)
B and C
2
Which of the following is a toothed whale?
A)
blue whale
B)
sperm whale
C)
sei whale
D)
right whale
E)
humpback whale
3
Dolphins and porpoises:
A)
are toothed whales.
B)
are cetaceans.
C)
populate both tropical and temperate waters.
D)
can swim at speeds in excess of 30 knots.
E)
all of the above
4
Sea otters differ from both seals and whales in that they:
A)
are not mammals.
B)
are not pinnipeds.
C)
do not have a layer of blubber.
D)
are air breathing.
E)
all of the above
5
About ____ percent of the estimated 8600 species of birds are marine species.
A)
3
B)
8
C)
12
D)
15
E)
20
F)
25
6
Whales belong to the mammal group called:
A)
ctenophores.
B)
pinnipeds.
C)
cetaceans.
D)
ciguatera.
E)
none of the above
7
Which of the following are baleen whales?
A)
blue whales
B)
finback whales
C)
right whales
D)
humpback whales
E)
all of the above
8
Which of the following whales migrate seasonally over thousands of miles?
A)
California gray whale
B)
bowhead whale
C)
beluga whale
D)
humpback whale
E)
A and D above
9
The California gray whale's calving grounds are in:
A)
Baja Califonia.
B)
coastal Oregon.
C)
the Gulf of Mexico.
D)
the Arctic.
E)
the Antarctic.
10
The most northerly whale is the:
A)
sei whale.
B)
minke whale.
C)
narwhale.
D)
right whale.
E)
killer whale.
11
Which of the following whale populations is not considered depleted?
A)
right whale
B)
minke whale
C)
finback whale
D)
bowhead whale
E)
humpback whale
12
Seals and sea lions are:
A)
cetaceans.
B)
pinnipeds.
C)
marine reptiles.
D)
meroplankton.
E)
benthos.
13
Which of the following are also known as sea cows?
A)
manatees
B)
dugongs
C)
walrus
D)
sea otters
E)
Both A and B above are correct.
14
The Marine Mammal Protection Act was enacted in:
A)
1953.
B)
1977.
C)
1972.
D)
1981.
E)
1983.
15
The top predator of the Arctic's marine food chain is the:
A)
sea lion.
B)
polar bear.
C)
walrus.
D)
penguin.
E)
porpoise.
16
The most truly oceanic marine bird is the:
A)
penguin.
B)
pelican.
C)
tern.
D)
sea gull.
E)
albatross.
17
There are ____ species of sea turtle.
A)
8
B)
12
C)
3
D)
5
E)
10
18
The largest marine reptile is the:
A)
marine iguana.
B)
leatherback turtle.
C)
gavial.
D)
sea snake.
E)
manatee.
19
Which of the following is considered a cartilagenous fish?
A)
sharks
B)
tuna
C)
cod
D)
swordfish
E)
herring
20
Fish that live on or near the bottom are called ______ fish.
A)
pelagic
B)
mud
C)
substrate
D)
demersal
E)
boundary
21
Which of the following baleen whales is largest on average?
A)
sei whale
B)
blue whale
C)
right whale
D)
humpback whale
22
Dolphins and porpoises are known as:
A)
fish.
B)
pinnepeds.
C)
cetaceans.
D)
sirens.
23
Which of the following marine mallas is herbivorous?
A)
manatee
B)
walrus
C)
otter
D)
harbor seal
24
Which of the following is NOT an adaptation of marine birds?
A)
waterproof feathers
B)
webbed feet
C)
highly developed eyesight
D)
highly developed sense of taste
25
Which of the following is a threat to sea turtle populations?
A)
suffocation in fishing nets
B)
habitat degradation
C)
commercial trade of turtle products
D)
All of the above threaten turtle populations.
26
Which is NOT true about sharks?
A)
Sharks predate mammals.
B)
Sharks are fish.
C)
Sharks bear live young.
D)
All sharks are predators.
27
Which of the following is NOT an adaptation of fish that live in the bathypelagic zone?
A)
bioluminescent organs
B)
expandable stomachs
C)
exceptionally large size
D)
mostly black in color
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