Question 1

The "experimental lunch" that was left on the Alvin as it rested on the bottom revealed that deep-sea bacteria:

Accepted Answer

A) Do not exist at all. 
B) May cause diseases in humans exposed to them. 
C) Break down organic matter faster than in shallow water as a result of high pressure. 
D) Grow slower than shallow-water species. 
E) Are identical to those found in shallow water. 
A) Do not exist at all. 
B) May cause diseases in humans exposed to them. 
C) Break down organic matter faster than in shallow water as a result of high pressure. 
D) Grow slower than shallow-water species. 
E) Are identical to those found in shallow water.

Question 2

The most common fish in the mesopelagic are:

Accepted Answer

A) Lanternfishes. 
B) Bristlemouths. 
C) Lancetfishes. 
D) Cutlassfishes. 
E) Hatchetfishes. 
A) Lanternfishes. 
B) Bristlemouths. 
C) Lancetfishes. 
D) Cutlassfishes. 
E) Hatchetfishes.

Question 3

Deep sea gigantism is most common in:

Accepted Answer

A) Crustaceans. 
B) Polychaetes. 
C) Brittle stars. 
D) Sea stars. 
E) Sea spiders. 
A) Crustaceans. 
B) Polychaetes. 
C) Brittle stars. 
D) Sea stars. 
E) Sea spiders.

Question 4

The deep-sea benthos consists mostly of:

Accepted Answer

A) Deposit feeders. 
B) Filter feeders. 
C) Herbivores. 
D) Omnivores. 
E) Carnivores. 
A) Deposit feeders. 
B) Filter feeders. 
C) Herbivores. 
D) Omnivores. 
E) Carnivores.

Question 5

Pheromones are special chemicals that are used to:

Accepted Answer

A) Digest food. 
B) Attract mates. 
C) Catch prey. 
D) Transport oxygen. 
E) Produce bioluminescence. 
A) Digest food. 
B) Attract mates. 
C) Catch prey. 
D) Transport oxygen. 
E) Produce bioluminescence.

Question 6

Hermaphroditism and male parasitism is most common in:

Accepted Answer

A) Fishes. 
B) Tube worms. 
C) Clams. 
D) Crabs. 
E) Shrimp. 
A) Fishes. 
B) Tube worms. 
C) Clams. 
D) Crabs. 
E) Shrimp.

Question 7

Deep-sea pelagic fishes are characterized by all of the following except:

Accepted Answer

A) Small eyes. 
B) Absent or reduced swim bladder. 
C) Color spotted with red. 
D) Flabby muscles. 
E) Large mouth and teeth. 
A) Small eyes. 
B) Absent or reduced swim bladder. 
C) Color spotted with red. 
D) Flabby muscles. 
E) Large mouth and teeth.

Question 8

A shrimp that occurs in large numbers around deep-sea hydrothermal vents does not have eyes.Light-sensitive cells on the top of the body,however,appear to be used to detect faint light from:

Accepted Answer

A) Bioluminescent predators. 
B) The surface. 
C) Faint glow around vents. 
D) Bioluminescent prey. 
E) Mates. 
A) Bioluminescent predators. 
B) The surface. 
C) Faint glow around vents. 
D) Bioluminescent prey. 
E) Mates.

Question 9

The tubular eyes of some mid-water animals are adapted for:

Accepted Answer

A) Increasing the field of vision 
B) Producing light 
C) Seeing in the complete absence of light 
D) Sensing changes in depth 
E) Sensing changes in salinity 
A) Increasing the field of vision 
B) Producing light 
C) Seeing in the complete absence of light 
D) Sensing changes in depth 
E) Sensing changes in salinity

Question 10

The major advantage that deep-sea benthic animals have over pelagic ones is that their food:

Accepted Answer

A) Is easier to digest. 
B) Falls to the bottom and stays in one place,thus being available for a longer time. 
C) Gets to be eaten before it gets to pelagic animals. 
D) Gets decayed at much faster rates by chemosynthetic bacteria. 
E) Produces less detritus. 
A) Is easier to digest. 
B) Falls to the bottom and stays in one place,thus being available for a longer time. 
C) Gets to be eaten before it gets to pelagic animals. 
D) Gets decayed at much faster rates by chemosynthetic bacteria. 
E) Produces less detritus.

Question 11

The reason for deep sea gigantism is:

Accepted Answer

A) Predation. 
B) Related to reproduction. 
C) Competition for food. 
D) Competition for space. 
E) Not known. 
A) Predation. 
B) Related to reproduction. 
C) Competition for food. 
D) Competition for space. 
E) Not known.

Question 12

Bioluminescence is used by mid-water animals in all of these except in:

Accepted Answer

A) Communication. 
B) Warning coloration. 
C) Attracting prey. 
D) Counter illumination. 
E) Escaping from predators. 
A) Communication. 
B) Warning coloration. 
C) Attracting prey. 
D) Counter illumination. 
E) Escaping from predators.

Question 13

Which of the following is not true regarding the deep-scattering layer (DSL)?

Accepted Answer

A) Position rises at night and moves down during the day 
B) Comprise of fish,shrimp,squids and jellyfish 
C) Found at depths of 300-500 meters 
D) Discovered by sonar during WW II 
E) Position is deeper on nights with a new moon 
A) Position rises at night and moves down during the day 
B) Comprise of fish,shrimp,squids and jellyfish 
C) Found at depths of 300-500 meters 
D) Discovered by sonar during WW II 
E) Position is deeper on nights with a new moon

Question 14

Photophores are:

Accepted Answer

A) Specialized eyes. 
B) Buoyancy-regulating organs. 
C) Specialized jaws. 
D) Light-sensitive organs that lack the lens of true eyes. 
E) Light-producing organs. 
A) Specialized eyes. 
B) Buoyancy-regulating organs. 
C) Specialized jaws. 
D) Light-sensitive organs that lack the lens of true eyes. 
E) Light-producing organs.

Question 15

Which of these groups of planktonic organisms would be least likely to be living in the mesopelagic?

Accepted Answer

A) Arrow worms 
B) Ostracots 
C) Copepods 
D) Diatoms 
E) Pteropods 
A) Arrow worms 
B) Ostracots 
C) Copepods 
D) Diatoms 
E) Pteropods

The "experimental lunch" that was left on the Alvin as it rested on the bottom revealed that deep-sea bacteria:

The most common fish in the mesopelagic are:

Deep sea gigantism is most common in:

The deep-sea benthos consists mostly of:

Pheromones are special chemicals that are used to:

Hermaphroditism and male parasitism is most common in:

Deep-sea pelagic fishes are characterized by all of the following except:

A shrimp that occurs in large numbers around deep-sea hydrothermal vents does not have eyes.Light-sensitive cells on the top of the body,however,appear to be used to detect faint light from:

The tubular eyes of some mid-water animals are adapted for:

The major advantage that deep-sea benthic animals have over pelagic ones is that their food:

The reason for deep sea gigantism is:

Bioluminescence is used by mid-water animals in all of these except in:

Which of the following is not true regarding the deep-scattering layer (DSL)?

Photophores are:

Which of these groups of planktonic organisms would be least likely to be living in the mesopelagic?

The Science of Marine Biology

The Sea Floor

Chemical and Physical Features of Seawater and the World Ocean

Fundamentals of Biology

The Microbial World

Multicellular Primary Producers: Seaweeds and Plants

Marine Animals Without a Backbone

Marine Fishes

Marine Reptiles, Birds, and Mammals

An Introduction to Marine Ecology

Between the Tides

Estuaries: Where Rivers Meet the Sea

Life on the Continental Shelf

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Life Near the Surface

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The Impact of Humans on the Marine Environment

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Exam 16: The Ocean Depths

The "experimental lunch" that was left on the Alvin as it rested on the bottom revealed that deep-sea bacteria:

The most common fish in the mesopelagic are:

Deep sea gigantism is most common in:

The deep-sea benthos consists mostly of:

Pheromones are special chemicals that are used to:

Hermaphroditism and male parasitism is most common in:

Deep-sea pelagic fishes are characterized by all of the following except:

A shrimp that occurs in large numbers around deep-sea hydrothermal vents does not have eyes.Light-sensitive cells on the top of the body,however,appear to be used to detect faint light from:

The tubular eyes of some mid-water animals are adapted for:

The major advantage that deep-sea benthic animals have over pelagic ones is that their food:

The reason for deep sea gigantism is:

Bioluminescence is used by mid-water animals in all of these except in:

Which of the following is not true regarding the deep-scattering layer (DSL)?

Photophores are:

Which of these groups of planktonic organisms would be least likely to be living in the mesopelagic?

The Science of Marine Biology

The Sea Floor

Chemical and Physical Features of Seawater and the World Ocean

Fundamentals of Biology

The Microbial World

Multicellular Primary Producers: Seaweeds and Plants

Marine Animals Without a Backbone

Marine Fishes

Marine Reptiles, Birds, and Mammals

An Introduction to Marine Ecology

Between the Tides

Estuaries: Where Rivers Meet the Sea

Life on the Continental Shelf

Coral Reefs

Life Near the Surface

Resources From the Sea

The Impact of Humans on the Marine Environment

The Oceans and Human Affairs

Filters