Question 1

Which of the following is a renewable resource?

Accepted Answer

A)  Coal 
B)  Petroleum 
C)  Gold 
D)  Corn-derived ethanol 
A)  Coal 
B)  Petroleum 
C)  Gold 
D)  Corn-derived ethanol D

Question 2

Shark populations are especially vulnerable to fishing

Accepted Answer

A)  Because sharks are very delicate creatures 
B)  Because sharks are often found in very restricted areas 
C)  Because sharks often have very few young 
D)  All of the above 
A)  Because sharks are very delicate creatures 
B)  Because sharks are often found in very restricted areas 
C)  Because sharks often have very few young 
D)  All of the above C

Question 3

What group is affected by the parasite MSX?

Accepted Answer

A)  Salmon 
B)  Oysters 
C)  Tuna 
D)  Kelp 
A)  Salmon 
B)  Oysters 
C)  Tuna 
D)  Kelp B

Question 4

In fisheries theory, compensation refers to

Accepted Answer

A)  The increase in species when you fish more 
B)  The decline in a fishery when you impose size limits 
C)  The decline in fish population growth when fishing increases past an upper threshold 
D)  A decline of fish population growth at very low density 
A)  The increase in species when you fish more 
B)  The decline in a fishery when you impose size limits 
C)  The decline in fish population growth when fishing increases past an upper threshold 
D)  A decline of fish population growth at very low density

Question 5

By using an elasticity analysis

Accepted Answer

A)  You can find the interconnectedness of marine populations 
B)  You can calculate maximum sustainable yield 
C)  You can calculate the birthrate of a population 
D)  You can estimate the effect on population growth caused by changing survival of a given age class in a fish species 
A)  You can find the interconnectedness of marine populations 
B)  You can calculate maximum sustainable yield 
C)  You can calculate the birthrate of a population 
D)  You can estimate the effect on population growth caused by changing survival of a given age class in a fish species

Question 6

Fishing for large sharks

Accepted Answer

A)  Results in a trophic cascade with top-down effects 
B)  Is not a popular fishery 
C)  Has little effect on open-ocean food webs 
D)  Has little chance of reducing shark populations 
A)  Results in a trophic cascade with top-down effects 
B)  Is not a popular fishery 
C)  Has little effect on open-ocean food webs 
D)  Has little chance of reducing shark populations

Question 7

Harmful algal blooms

Accepted Answer

A)  Have been on the decline in the past decades 
B)  Have been increasing in frequency and extent in past decades 
C)  Are found only in tropical waters 
D)  Are confined to areas with mussels 
A)  Have been on the decline in the past decades 
B)  Have been increasing in frequency and extent in past decades 
C)  Are found only in tropical waters 
D)  Are confined to areas with mussels

Question 8

The original Magnuson Act

Accepted Answer

A)  Strongly reduced fishing by United States coastal fishermen 
B)  Set up a 200-mile fishing zone for United States fishermen 
C)  Resulted in large-scale increases of many coastal fish species 
D)  Has never been renewed 
A)  Strongly reduced fishing by United States coastal fishermen 
B)  Set up a 200-mile fishing zone for United States fishermen 
C)  Resulted in large-scale increases of many coastal fish species 
D)  Has never been renewed

Question 9

Stocks

Accepted Answer

A)  Are used to identify different species 
B)  Are always genetically identical 
C)  Are isolated populations of the same species 
D)  Must be genetically different 
A)  Are used to identify different species 
B)  Are always genetically identical 
C)  Are isolated populations of the same species 
D)  Must be genetically different

Question 10

Whale fisheries are especially hard to sustain because

Accepted Answer

A)  Whales have small numbers of young 
B)  Whales, unlike all other fish, have to be fished one at a time 
C)  Whales, unlike fish, migrate long distances 
D)  Whales can be hunted at sea by ships that do not have to return to shore 
A)  Whales have small numbers of young 
B)  Whales, unlike all other fish, have to be fished one at a time 
C)  Whales, unlike fish, migrate long distances 
D)  Whales can be hunted at sea by ships that do not have to return to shore

Question 11

Mesh limits are a problem in assigning a sustainable yield

Accepted Answer

A)  Because the mesh size used may trap many other species 
B)  Because mesh size may be assigned incorrectly to a given age class 
C)  Larger animals may be able to slip through the flexible mesh 
D)  All of the above 
A)  Because the mesh size used may trap many other species 
B)  Because mesh size may be assigned incorrectly to a given age class 
C)  Larger animals may be able to slip through the flexible mesh 
D)  All of the above

Question 12

Why does deforestation hurt salmon fisheries?

Accepted Answer

A)  The logs are thrown into marine waters, which pollutes the habitat for the fish 
B)  The logs fall into streams, which dams them up 
C)  The removal of logs encourages erosion, which clogs the fish spawning grounds with mud 
D)  Deforestation does not harm salmon fisheries 
A)  The logs are thrown into marine waters, which pollutes the habitat for the fish 
B)  The logs fall into streams, which dams them up 
C)  The removal of logs encourages erosion, which clogs the fish spawning grounds with mud 
D)  Deforestation does not harm salmon fisheries

Question 13

Theoretically, maximum sustainable yield occurs

Accepted Answer

A)  When fishing rate is at a minimum 
B)  When fishing rate is modest 
C)  When fishing rate is very high 
D)  When only the reproductive individuals are fished from the population 
A)  When fishing rate is at a minimum 
B)  When fishing rate is modest 
C)  When fishing rate is very high 
D)  When only the reproductive individuals are fished from the population

Question 14

Ecosystem-based management

Accepted Answer

A)  Would set an ideal population size of a top predator fish at higher levels than MSY models 
B)  Takes the same approach as MSY models 
C)  Is based on the biology of single fishery species 
D)  All of the above 
A)  Would set an ideal population size of a top predator fish at higher levels than MSY models 
B)  Takes the same approach as MSY models 
C)  Is based on the biology of single fishery species 
D)  All of the above

Question 15

The Blue Whale Unit

Accepted Answer

A)  Is a measure of blue whale size 
B)  Allows the setting of limits on several species of whales in terms of one species' size 
C)  Was never adopted by the International Whaling Commission 
D)  Was a color code for whale identification 
A)  Is a measure of blue whale size 
B)  Allows the setting of limits on several species of whales in terms of one species' size 
C)  Was never adopted by the International Whaling Commission 
D)  Was a color code for whale identification

Question 16

The very act of fishing can greatly alter the environment itself in

Accepted Answer

A)  Purse seining 
B)  Longlining 
C)  Bottom trawling 
D)  Netting 
A)  Purse seining 
B)  Longlining 
C)  Bottom trawling 
D)  Netting

Question 17

Stock size is usually estimated by means of

Accepted Answer

A)  Scientific surveys of fish populations 
B)  Theoretical estimates alone 
C)  Predictions from phytoplankton population size 
D)  Landings by fishers 
A)  Scientific surveys of fish populations 
B)  Theoretical estimates alone 
C)  Predictions from phytoplankton population size 
D)  Landings by fishers

Question 18

Why do power plants exert some harm on fisheries?

Accepted Answer

A)  Warm water from cooling waters can cause mortality 
B)  Fish are caught in intake pipes of water cooling apparatus 
C)  Both a and b 
D)  None of the above 
A)  Warm water from cooling waters can cause mortality 
B)  Fish are caught in intake pipes of water cooling apparatus 
C)  Both a and b 
D)  None of the above

Question 19

If fishing effort goes up and the landings are the same, then

Accepted Answer

A)  Stock size must have declined 
B)  Stock size must have increased 
C)  Stock size may have remained the same 
D)  The premise of increased effort with similar landings is impossible 
A)  Stock size must have declined 
B)  Stock size must have increased 
C)  Stock size may have remained the same 
D)  The premise of increased effort with similar landings is impossible

Question 20

A successful approach to keeping a fishery at a constant level of effort and return is

Accepted Answer

A)  A 200-mile limit from shore 
B)  Individual transferable quotas 
C)  Blanket quotas on a whole fishery 
D)  Establishment of more government management commissions 
A)  A 200-mile limit from shore 
B)  Individual transferable quotas 
C)  Blanket quotas on a whole fishery 
D)  Establishment of more government management commissions

Exam 21: Fisheries and Food From the Sea

Which of the following is a renewable resource?

Shark populations are especially vulnerable to fishing

What group is affected by the parasite MSX?

In fisheries theory, compensation refers to

By using an elasticity analysis

Fishing for large sharks

Harmful algal blooms

The original Magnuson Act

Stocks

Whale fisheries are especially hard to sustain because

Mesh limits are a problem in assigning a sustainable yield

Why does deforestation hurt salmon fisheries?

Theoretically, maximum sustainable yield occurs

Ecosystem-based management

The Blue Whale Unit

The very act of fishing can greatly alter the environment itself in

Stock size is usually estimated by means of

Why do power plants exert some harm on fisheries?

If fishing effort goes up and the landings are the same, then

A successful approach to keeping a fishery at a constant level of effort and return is

Sounding the Deep

The Oceanic Environment

Climate Oscillations and Climate Change

Ecological and Evolutionary Principles of Marine Biology

The Chemical and Physical Environment

Life in a Fluid Medium

Reproduction, Dispersal, and Migration

Plankton

Marine Vertebrates and Other Nekton

The Open Sea: Distributions and Adaptations

Processes in the Water Column

Productivity, Food Webs, and Global Climate Change

Benthic Microorganisms, Seaweeds, and Sea Grasses

The Diversity of Benthic Marine Invertebrates

Benthic Life Habits

The Tidelands: Rocky Shores, Soft-Substratum Shores, Marshes, Mangroves, Estuaries, and Oyster Reefs

The Shallow Coastal Subtidal: Sea Grass Beds, Rocky Reefs, Kelp Forests, and Coral Reefs

Benthos From the Continental Shelf to the Deep Sea

Polar Marine Biology

Biodiversity and Conservation of the Ocean

Environmental Impacts of Industrial Activities and Human Populations

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