Question 1

All of the following are examples of abiotic factors except:

Accepted Answer

A) Salinity. 
B) Predation. 
C) Substrate. 
D) Temperature. 
E) Light. 
A) Salinity. 
B) Predation. 
C) Substrate. 
D) Temperature. 
E) Light. B

Question 2

The amount of chlorophyll in the water is a direct estimate of:

Accepted Answer

A) Primary production. 
B) Respiration. 
C) Standing stock of phytoplankton. 
D) Oxygen utilization. 
E) Release of nutrients. 
A) Primary production. 
B) Respiration. 
C) Standing stock of phytoplankton. 
D) Oxygen utilization. 
E) Release of nutrients. C

Question 3

Competitive exclusion can be best defined as:

Accepted Answer

A) When one species overcompetes and eliminates another. 
B) The creation of a separate ecological niche by a new species. 
C) The division of resources. 
D) When one species shares limiting resources with another. 
E) When competition results in the elimination of particular limiting resources. 
A) When one species overcompetes and eliminates another. 
B) The creation of a separate ecological niche by a new species. 
C) The division of resources. 
D) When one species shares limiting resources with another. 
E) When competition results in the elimination of particular limiting resources. A

Question 4

Self-regulating of population numbers acts only when the population is:

Accepted Answer

A) Large. 
B) Small. 
C) Stable. 
D) Threatened. 
E) Declining. 
A) Large. 
B) Small. 
C) Stable. 
D) Threatened. 
E) Declining.

Question 5

The difference between food webs and food chains is that food webs:

Accepted Answer

A) Consist of only one trophic level. 
B) Include primary producers as well as consumers. 
C) Do not take into account predators. 
D) Only outline feeding relationships among consumers. 
E) Are more complex. 
A) Consist of only one trophic level. 
B) Include primary producers as well as consumers. 
C) Do not take into account predators. 
D) Only outline feeding relationships among consumers. 
E) Are more complex.

Question 6

In the dark-light bottle experiment,one of the following is measured in the dark bottle:

Accepted Answer

A) Photosynthesis. 
B) Respiration. 
C) Decomposition. 
D) Photosynthesis plus respiration. 
E) Chlorophyll concentration. 
A) Photosynthesis. 
B) Respiration. 
C) Decomposition. 
D) Photosynthesis plus respiration. 
E) Chlorophyll concentration.

Question 7

Sessile organisms are part of the:

Accepted Answer

A) Benthos. 
B) Nekton. 
C) Plankton. 
D) Pelagic type of organisms. 
E) Zooplankton only. 
A) Benthos. 
B) Nekton. 
C) Plankton. 
D) Pelagic type of organisms. 
E) Zooplankton only.

Question 8

Nitrogen fixation is performed at sea by:

Accepted Answer

A) Seaweeds. 
B) Cyanobacteria. 
C) Phytoplankton. 
D) Zooplankton. 
E) All answers are correct. 
A) Seaweeds. 
B) Cyanobacteria. 
C) Phytoplankton. 
D) Zooplankton. 
E) All answers are correct.

Question 9

Which of the following is an example of intraspecific competition?

Accepted Answer

A) Two species of barnacles competing for space on a rocky shoreline 
B) Two species of dolphins feeding on the same population of fish 
C) Two individuals in a population of clownfish attempt to use the same anemone as habitat 
D) Two species of fish attempt to use the same rocky ledge as habitat 
E) Two species of seals fight over space on a beach to rear their young 
A) Two species of barnacles competing for space on a rocky shoreline 
B) Two species of dolphins feeding on the same population of fish 
C) Two individuals in a population of clownfish attempt to use the same anemone as habitat 
D) Two species of fish attempt to use the same rocky ledge as habitat 
E) Two species of seals fight over space on a beach to rear their young

Question 10

In the carbon cycle,seaweeds and plants play a fundamental role by:

Accepted Answer

A) Increasing the amount of dissolved carbon dioxide as a result of decomposition. 
B) Decreasing the amount of dissolved carbon dioxide as a result of respiration. 
C) Increasing the amount of dissolved carbon dioxide as a result of photosynthesis. 
D) Decreasing the amount of detritus. 
E) Decreasing the amount of carbon dioxide as a result of photosynthesis. 
A) Increasing the amount of dissolved carbon dioxide as a result of decomposition. 
B) Decreasing the amount of dissolved carbon dioxide as a result of respiration. 
C) Increasing the amount of dissolved carbon dioxide as a result of photosynthesis. 
D) Decreasing the amount of detritus. 
E) Decreasing the amount of carbon dioxide as a result of photosynthesis.

Question 11

Besides fixation by photosynthesis a large amount of carbon dioxide may be deposited in the oceans in the chemical form of:

Accepted Answer

A) Nucleic acids. 
B) Calcium carbonate. 
C) Lipids. 
D) Carbonic acid. 
A) Nucleic acids. 
B) Calcium carbonate. 
C) Lipids. 
D) Carbonic acid.

Question 12

An example of a community is:

Accepted Answer

A) One giant kelp individual. 
B) A kelp forest plus all of the physical factors affecting it. 
C) All physical factors affecting a kelp forest. 
D) A kelp forest plus all organisms living in it. 
E) Several giant kelp individuals living in one particular area. 
A) One giant kelp individual. 
B) A kelp forest plus all of the physical factors affecting it. 
C) All physical factors affecting a kelp forest. 
D) A kelp forest plus all organisms living in it. 
E) Several giant kelp individuals living in one particular area.

Question 13

The ecological niche of a species refers to:

Accepted Answer

A) Its habitat and range. 
B) Position of the organism in the food web. 
C) Role in the community and all associated biotic and abiotic factors. 
D) Mode of reproduction and food habits. 
E) Behavior in relation to other species in the community. 
A) Its habitat and range. 
B) Position of the organism in the food web. 
C) Role in the community and all associated biotic and abiotic factors. 
D) Mode of reproduction and food habits. 
E) Behavior in relation to other species in the community.

Question 14

Net primary productivity is best defined as:

Accepted Answer

A) The total amount of biomass created by producers. 
B) The total amount of biomass created by producers after energy loss to metabolism is factored. 
C) The total biomass of producers in the water in a given habitat. 
D) The total biomass of producers in the ocean. 
E) None of the choices are correct. 
A) The total amount of biomass created by producers. 
B) The total amount of biomass created by producers after energy loss to metabolism is factored. 
C) The total biomass of producers in the water in a given habitat. 
D) The total biomass of producers in the ocean. 
E) None of the choices are correct.

Question 15

Cleaning symbiosis is an example of symbiosis because the partners involved in the association:

Accepted Answer

A) Are not harmed. 
B) Are both harmed if we closely study their association. 
C) Both have coevolved into a close association. 
D) One is harmed while the other is not. 
E) One species benefits while the other is unaffected. 
A) Are not harmed. 
B) Are both harmed if we closely study their association. 
C) Both have coevolved into a close association. 
D) One is harmed while the other is not. 
E) One species benefits while the other is unaffected.

Question 16

One of these is an example of coevolution:

Accepted Answer

A) A seaweed evolving better ways to capture sunlight energy. 
B) A seaweed evolving a mechanism allowing it to take in a particular nutrient. 
C) A limpet getting adapted to live along coasts exposed to heavier wave action. 
D) A limpet evolving a behavior that allows it to escape from a seastar predator. 
E) A seastar becoming adapted to move higher up along rocky shores during low tides. 
A) A seaweed evolving better ways to capture sunlight energy. 
B) A seaweed evolving a mechanism allowing it to take in a particular nutrient. 
C) A limpet getting adapted to live along coasts exposed to heavier wave action. 
D) A limpet evolving a behavior that allows it to escape from a seastar predator. 
E) A seastar becoming adapted to move higher up along rocky shores during low tides.

Question 17

An algae begins to produce chemical defenses after it has been grazed upon by a herbivore.This is an example of:

Accepted Answer

A) inducible defense. 
B) Dependent defense. 
C) Reactive defense. 
D) deliberate defense. 
E) Designed defense. 
A) inducible defense. 
B) Dependent defense. 
C) Reactive defense. 
D) deliberate defense. 
E) Designed defense.

Question 18

The subtidal zone is the area:

Accepted Answer

A) Between low and high tide. 
B) Beyond the continental shelf. 
C) Between the intertidal zone and the edge of the continental shelf. 
D) Where pelagic organisms live. 
E) Above the highest tide. 
A) Between low and high tide. 
B) Beyond the continental shelf. 
C) Between the intertidal zone and the edge of the continental shelf. 
D) Where pelagic organisms live. 
E) Above the highest tide.

Question 19

Exponential growth in a population may be slowed as a result of:

Accepted Answer

A) Reduction in light. 
B) Reduction of nutrients. 
C) Increase of predators. 
D) Reduction in light and Reduction of nutrients only. 
E) Reduction of nutrients and Increase of predators only. 
A) Reduction in light. 
B) Reduction of nutrients. 
C) Increase of predators. 
D) Reduction in light and Reduction of nutrients only. 
E) Reduction of nutrients and Increase of predators only.

Question 20

On the average,what percentage of energy in a particular trophic level is passed on to the next trophic level?

Accepted Answer

A) 1% 
B) 2% 
C) 5% 
D) 10% 
E) 15% 
A) 1% 
B) 2% 
C) 5% 
D) 10% 
E) 15%

All of the following are examples of abiotic factors except:

The amount of chlorophyll in the water is a direct estimate of:

Competitive exclusion can be best defined as:

Self-regulating of population numbers acts only when the population is:

The difference between food webs and food chains is that food webs:

In the dark-light bottle experiment,one of the following is measured in the dark bottle:

Sessile organisms are part of the:

Nitrogen fixation is performed at sea by:

Which of the following is an example of intraspecific competition?

In the carbon cycle,seaweeds and plants play a fundamental role by:

Besides fixation by photosynthesis a large amount of carbon dioxide may be deposited in the oceans in the chemical form of:

An example of a community is:

The ecological niche of a species refers to:

Net primary productivity is best defined as:

Cleaning symbiosis is an example of symbiosis because the partners involved in the association:

One of these is an example of coevolution:

An algae begins to produce chemical defenses after it has been grazed upon by a herbivore.This is an example of:

The subtidal zone is the area:

Exponential growth in a population may be slowed as a result of:

On the average,what percentage of energy in a particular trophic level is passed on to the next trophic level?

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

Between the Tides

Estuaries: Where Rivers Meet the Sea

Life on the Continental Shelf

Coral Reefs

Life Near the Surface

The Ocean Depths

Resources From the Sea

The Impact of Humans on the Marine Environment

The Oceans and Human Affairs

Filters

Exam 10: An Introduction to Marine Ecology

All of the following are examples of abiotic factors except:

The amount of chlorophyll in the water is a direct estimate of:

Competitive exclusion can be best defined as:

Self-regulating of population numbers acts only when the population is:

The difference between food webs and food chains is that food webs:

In the dark-light bottle experiment,one of the following is measured in the dark bottle:

Sessile organisms are part of the:

Nitrogen fixation is performed at sea by:

Which of the following is an example of intraspecific competition?

In the carbon cycle,seaweeds and plants play a fundamental role by:

Besides fixation by photosynthesis a large amount of carbon dioxide may be deposited in the oceans in the chemical form of:

An example of a community is:

The ecological niche of a species refers to:

Net primary productivity is best defined as:

Cleaning symbiosis is an example of symbiosis because the partners involved in the association:

One of these is an example of coevolution:

An algae begins to produce chemical defenses after it has been grazed upon by a herbivore.This is an example of:

The subtidal zone is the area:

Exponential growth in a population may be slowed as a result of:

On the average,what percentage of energy in a particular trophic level is passed on to the next trophic level?

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

Between the Tides

Estuaries: Where Rivers Meet the Sea

Life on the Continental Shelf

Coral Reefs

Life Near the Surface

The Ocean Depths

Resources From the Sea

The Impact of Humans on the Marine Environment

The Oceans and Human Affairs

Filters