Question 1

Algae form the base of the trophic system for hydrothermal vent communities.

Accepted Answer

A) True 
 B)False

Question 2

Mangrove trees grow in swampy salt water along ________.

Accepted Answer

A)  temperate coasts 
B)  crests of coral reefs 
C)  coasts with heavy surf 
D)  areas of extreme evaporation and high salinity 
E)  tropical coasts 
A)  temperate coasts 
B)  crests of coral reefs 
C)  coasts with heavy surf 
D)  areas of extreme evaporation and high salinity 
E)  tropical coasts

Question 3

One adaptation of many intertidal invertebrates is to develop a rounded profile to minimize resistance to breaking waves.

Accepted Answer

A) True 
 B)False

Question 4

Which of the following properties is likely to decrease in a small, shallow tide pool at low tide?

Accepted Answer

A)  oxygen 
B)  carbon dioxide 
C)  temperature 
D)  acidity 
E)  salinity 
A)  oxygen 
B)  carbon dioxide 
C)  temperature 
D)  acidity 
E)  salinity

Question 5

Intertidal communities have low productivity because of high wave activity.

Accepted Answer

A) True 
 B)False

Question 6

Marine algae are found in which sequence from sea surface to deeper water?

Accepted Answer

A)  green, brown, red 
B)  red, brown, green 
C)  green, red, brown 
D)  brown, green, red 
E)  red, green, brown 
A)  green, brown, red 
B)  red, brown, green 
C)  green, red, brown 
D)  brown, green, red 
E)  red, green, brown

Question 7

Benthic microalgae are best adapted to living ________.

Accepted Answer

A)  in the rocky intertidal zone 
B)  below the euphotic zone 
C)  within shallow sandy or muddy environments 
D)  in tidepools 
A)  in the rocky intertidal zone 
B)  below the euphotic zone 
C)  within shallow sandy or muddy environments 
D)  in tidepools

Question 8

The key special chemical used by chemosynthetic communities at hot vents is ________.

Accepted Answer

A)  nitrate 
B)  phosphate 
C)  silicate 
D)  hydrogen sulfide 
E)  methane 
A)  nitrate 
B)  phosphate 
C)  silicate 
D)  hydrogen sulfide 
E)  methane

Question 9

In the Riftia-symbiont relationship, the benefit to the symbiont during mutualism includes ________.

Accepted Answer

A)  chemicals for chemosynthesis 
B)  a habitat 
C)  protection from predators/consumers 
D)  All of these are correct. 
E)  None of these is correct. 
A)  chemicals for chemosynthesis 
B)  a habitat 
C)  protection from predators/consumers 
D)  All of these are correct. 
E)  None of these is correct.

Question 10

The size and shape of sediment particles influences both the ________, or amount of space between particles, and ________, the flow of water and gases.

Accepted Answer

A)  porosity; permeability 
B)  porosity; rugosity 
C)  permeability; inundation 
D)  exchange; permeability 
A)  porosity; permeability 
B)  porosity; rugosity 
C)  permeability; inundation 
D)  exchange; permeability

Question 11

Blades are the photosynthetic organ of seaweed.

Accepted Answer

A) True 
 B)False

Question 12

Most animals that live within the sand and mud feed on detritus.

Accepted Answer

A) True 
 B)False

Question 13

A close relationship between unrelated organisms in which one organism benefits and the other is unaffected is known as ________.

Accepted Answer

A)  symbiosis 
B)  commensalism 
C)  parasitism 
D)  mutualism 
E)  symbiosis and commensalism 
A)  symbiosis 
B)  commensalism 
C)  parasitism 
D)  mutualism 
E)  symbiosis and commensalism

Question 14

Which of the following is not true about deep-sea coral and tropical reef coral?

Accepted Answer

A)  They are both animals. 
B)  They are both cnidarians. 
C)  They both have polyps. 
D)  They both have symbionts. 
E)  All of these are correct. 
A)  They are both animals. 
B)  They are both cnidarians. 
C)  They both have polyps. 
D)  They both have symbionts. 
E)  All of these are correct.

Question 15

The base of the food chain in hydrothermal vent communities is phytoplankton.

Accepted Answer

A) True 
 B)False

Question 16

CLOD or Coral Lethal Orange Disease ________.

Accepted Answer

A)  attacks and kills coral polyps 
B)  kills zooxanthellae causing bleaching 
C)  kills algae that cement sand debris to form a hard surface reef 
D)  kills clams and crabs on coral reefs 
E)  attacks and kills coral polyps, kills zooxanthellae causing bleaching, and kills algae that cement sand debris to form a hard surface reef 
A)  attacks and kills coral polyps 
B)  kills zooxanthellae causing bleaching 
C)  kills algae that cement sand debris to form a hard surface reef 
D)  kills clams and crabs on coral reefs 
E)  attacks and kills coral polyps, kills zooxanthellae causing bleaching, and kills algae that cement sand debris to form a hard surface reef

Question 17

More than 75 percent of the benthic animals belong to the epifauna.

Accepted Answer

A) True 
 B)False

Question 18

Brown algae include ________.

Accepted Answer

A)  Ulva, or sea lettuce 
B)  dinoflagellates 
C)  kelp 
D)  Porphyra 
A)  Ulva, or sea lettuce 
B)  dinoflagellates 
C)  kelp 
D)  Porphyra

Question 19

Animals that burrow into the seafloor are members of the epifauna.

Accepted Answer

A) True 
 B)False

Question 20

Symbiosis is defined as ________.

Accepted Answer

A)  the grouping of organisms according to their ability to cope with exposure and water loss 
B)  a relationship between animals living on a mud flat and their environment 
C)  the relationship between herbivores and the algae that they graze upon 
D)  a close intimate relationship between two dissimilar organisms 
E)  None of these is correct. 
A)  the grouping of organisms according to their ability to cope with exposure and water loss 
B)  a relationship between animals living on a mud flat and their environment 
C)  the relationship between herbivores and the algae that they graze upon 
D)  a close intimate relationship between two dissimilar organisms 
E)  None of these is correct.

Algae form the base of the trophic system for hydrothermal vent communities.

Mangrove trees grow in swampy salt water along ________.

One adaptation of many intertidal invertebrates is to develop a rounded profile to minimize resistance to breaking waves.

Which of the following properties is likely to decrease in a small, shallow tide pool at low tide?

Intertidal communities have low productivity because of high wave activity.

Marine algae are found in which sequence from sea surface to deeper water?

Benthic microalgae are best adapted to living ________.

The key special chemical used by chemosynthetic communities at hot vents is ________.

In the Riftia-symbiont relationship, the benefit to the symbiont during mutualism includes ________.

The size and shape of sediment particles influences both the , or amount of space between particles, and , the flow of water and gases.

Blades are the photosynthetic organ of seaweed.

Most animals that live within the sand and mud feed on detritus.

A close relationship between unrelated organisms in which one organism benefits and the other is unaffected is known as ________.

Which of the following is not true about deep-sea coral and tropical reef coral?

The base of the food chain in hydrothermal vent communities is phytoplankton.

CLOD or Coral Lethal Orange Disease ________.

More than 75 percent of the benthic animals belong to the epifauna.

Brown algae include ________.

Animals that burrow into the seafloor are members of the epifauna.

Symbiosis is defined as ________.

The Water Planet

Earth Structure and Plate Tectonics

The Sea Floor and Its Sediments

The Physical Properties of Water

The Chemistry of Seawater

The Atmosphere and the Oceans

Ocean Structure and Circulation

The Waves

The Tides

Coasts, Beaches, and Estuaries

The Living Ocean

The Plankton, Productivity, and Food Webs

The Nekton: Swimmers of the Sea

Environmental Issues

The Oceans and Climate Disruption

Filters

Exam 14: The Benthos: Living on the Sea Floor

Algae form the base of the trophic system for hydrothermal vent communities.

Mangrove trees grow in swampy salt water along ________.

One adaptation of many intertidal invertebrates is to develop a rounded profile to minimize resistance to breaking waves.

Which of the following properties is likely to decrease in a small, shallow tide pool at low tide?

Intertidal communities have low productivity because of high wave activity.

Marine algae are found in which sequence from sea surface to deeper water?

Benthic microalgae are best adapted to living ________.

The key special chemical used by chemosynthetic communities at hot vents is ________.

In the Riftia-symbiont relationship, the benefit to the symbiont during mutualism includes ________.

The size and shape of sediment particles influences both the ________, or amount of space between particles, and ________, the flow of water and gases.

Blades are the photosynthetic organ of seaweed.

Most animals that live within the sand and mud feed on detritus.

A close relationship between unrelated organisms in which one organism benefits and the other is unaffected is known as ________.

Which of the following is not true about deep-sea coral and tropical reef coral?

The base of the food chain in hydrothermal vent communities is phytoplankton.

CLOD or Coral Lethal Orange Disease ________.

More than 75 percent of the benthic animals belong to the epifauna.

Brown algae include ________.

Animals that burrow into the seafloor are members of the epifauna.

Symbiosis is defined as ________.

The Water Planet

Earth Structure and Plate Tectonics

The Sea Floor and Its Sediments

The Physical Properties of Water

The Chemistry of Seawater

The Atmosphere and the Oceans

Ocean Structure and Circulation

The Waves

The Tides

Coasts, Beaches, and Estuaries

The Living Ocean

The Plankton, Productivity, and Food Webs

The Nekton: Swimmers of the Sea

Environmental Issues

The Oceans and Climate Disruption

Filters

The size and shape of sediment particles influences both the , or amount of space between particles, and , the flow of water and gases.