Question 1

One conservation method used to protect turtles from trawl nets uses

Accepted Answer

A)   sonar.
B)   turtle excluder devices (TEDs) .
C)   gill nets.
D)   acoustic tagging devices.E) A) and C)
F) None of the above

Question 2

Fish of the bathyal and abyssal zones are generally

Accepted Answer

A)   small bodied, large mouthed, and bioluminescent.
B)   large bodied, large mouthed, and bioluminescent.
C)   small bodied, small mouthed, and dark colored.
D)   large bodied, small mouthed, and dark colored.
E)   small bodied, small mouthed, and bioluminescent.F) C) and E)
G) B) and E)

Question 3

Most fish in the bathypelagic are

Accepted Answer

A)   black.
B)   silver.
C)   red.
D)   white.
E)   colorless.F) A) and B)
G) All of the above

Question 4

Which of the following increased humans' abilities to harvest the great whales?

Accepted Answer

A)   the explosive harpoon
B)   motorized hunting vessels and factory ships
C)   sonar
D)   the explosive harpoon and motorized hunting vessels and factory ships
E)   All of these are correct.F) A) and D)
G) D) and E)

Question 5

Because whales are homeotherms, individuals of a single species can migrate between and survive in waters of very different temperatures.

Accepted Answer

A) True 
 B)False

Question 6

Seabirds have a very well developed sense of taste.

Accepted Answer

A) True 
 B)False

Question 7

Dolphins and porpoises are small toothed whales.

Accepted Answer

A) True 
 B)False  True

Question 8

Dolphins and porpoises are small toothed whales.

Accepted Answer

A) True 
 B)False

Question 9

A keystone species is an organism that

Accepted Answer

A)   is endangered.
B)   plays a crucial role in an ecosystem.
C)   is very abundant.
D)   lives in coastal regions.E) A) and B)
F) None of the above B

Question 10

A shark is an example of a bony fish.

Accepted Answer

A) True 
 B)False

Question 11

The large tusks of the male walrus are used exclusively for fighting off other males during the mating season.

Accepted Answer

A) True 
 B)False

Question 12

The Marine Mammal Protection Act (MMPA) protects all nekton in U.S. waters.

Accepted Answer

A) True 
 B)False  False

Question 13

TEDs are devices to keep seals away from fishnets.

Accepted Answer

A) True 
 B)False

Question 14

All eight species of sea turtles are threatened or endangered.

Accepted Answer

A) True 
 B)False

Question 15

Whales and seals increase their flotation by

Accepted Answer

A)   filling their swim bladders with large quantities of gas.
B)   storing large quantities of low-density fat.
C)   blowing bubbles while swimming.
D)   storing nitrogen in their blood.
E)   having specialized air cavities in their bones.F) None of the above
G) C) and E)

Question 16

Polar bears

Accepted Answer

A)   don't like to get wet.
B)   can swim continuously for 100km.
C)   feed primarily on fish.
D)   are found at both poles.
E)   can swim continuously for 100km, feed primarily on fish, and are found at both poles.F) All of the above
G) B) and D)

Question 17

Polar bears are

Accepted Answer

A)   managed by international agreement.
B)   top predators of Arctic marine food chains.
C)   hunted by native peoples.
D)   protected by the U.S. Marine Mammal Act.
E)   All of these are correct.F) A) and D)
G) All of the above

Question 18

Sea snakes are found in the Atlantic, Pacific, and Indian Oceans.

Accepted Answer

A) True 
 B)False

Question 19

In the perpetually dark bathypelagic zone, fish tend to be

Accepted Answer

A)   brightly colored.
B)   fast swimmers.
C)   frequent feeders.
D)   bioluminescent.
E)   absent.F) B) and E)
G) A) and B)

Question 20

Sea otters depend on a thick layer of fat (blubber) to stay warm.

Accepted Answer

A) True 
 B)False

Exam 13: The Nekton: Swimmers of the Sea

One conservation method used to protect turtles from trawl nets uses

Correct AnswerverifiedShow Answer

Fish of the bathyal and abyssal zones are generally

Correct AnswerverifiedShow Answer

Most fish in the bathypelagic are

Correct AnswerverifiedShow Answer

Which of the following increased humans' abilities to harvest the great whales?

Correct AnswerverifiedShow Answer

Because whales are homeotherms, individuals of a single species can migrate between and survive in waters of very different temperatures.

Correct AnswerverifiedShow Answer

Seabirds have a very well developed sense of taste.

Correct AnswerverifiedShow Answer

Dolphins and porpoises are small toothed whales.

Correct AnswerverifiedTrue

Dolphins and porpoises are small toothed whales.

Correct AnswerverifiedShow Answer

A keystone species is an organism that

Correct AnswerverifiedB

A shark is an example of a bony fish.

Correct AnswerverifiedShow Answer

The large tusks of the male walrus are used exclusively for fighting off other males during the mating season.

Correct AnswerverifiedShow Answer

The Marine Mammal Protection Act (MMPA) protects all nekton in U.S. waters.

Correct AnswerverifiedFalse

TEDs are devices to keep seals away from fishnets.

Correct AnswerverifiedShow Answer

All eight species of sea turtles are threatened or endangered.

Correct AnswerverifiedShow Answer

Whales and seals increase their flotation by

Correct AnswerverifiedShow Answer

Polar bears

Correct AnswerverifiedShow Answer

Polar bears are

Correct AnswerverifiedShow Answer

Sea snakes are found in the Atlantic, Pacific, and Indian Oceans.

Correct AnswerverifiedShow Answer

In the perpetually dark bathypelagic zone, fish tend to be

Correct AnswerverifiedShow Answer

Sea otters depend on a thick layer of fat (blubber) to stay warm.

Correct AnswerverifiedShow Answer

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True

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B

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False

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