Question 1

A type of symbiosis in which both species benefit is:

Accepted Answer

A)  Predation
B)  Parasitism
C)  Mutualism
D)  Commensalism
E)  Intraspecific competitionF) A) and D)
G) D) and E)

Question 2

The "net primary productivity" is:

Accepted Answer

A)  The amount of energy used in metabolism by producers
B)  The amount of energy given off as heat by producers
C)  The amount of energy trapped by the autotrophs of an ecosystem
D)  The amount of energy available for consumers
E)  Both amount of energy given off as heat by producers and amount of energy trapped by the autotrophs of an ecosystem are correctF) A) and B)
G) A) and D)

Question 3

Energy flows in only one direction through an ecosystem.

Accepted Answer

A) True 
 B)False

Question 4

The total of all the resources,both biotic and abiotic,a species exploits for its survival,growth,and reproduction is its:

Accepted Answer

A)  Competitive zone
B)  Habitat
C)  Food web
D)  Niche
E)  BiosphereF) A) and B)
G) D) and E)

Question 5

In biosphere II,the system did not remain totally self-contained because soil bacteria produced more CO2 than anticipated requiring oxygen to be pumped in from outside.

Accepted Answer

A) True 
 B)False

Question 6

Carbon returns to the atmosphere:

Accepted Answer

A)  As carbon dioxide
B)  From respiration of plants
C)  By the burning of fossil fuels
D)  From respiration of animals
E)  All are correctF) A) and B)
G) A) and C)

Question 7

A genetic change in one species that selects for a subsequent change in a different species is termed:

Accepted Answer

A)  Coevolution
B)  Genetic dispersion
C)  Gene dynamics
D)  Competitive exclusion
E)  Evolutionary dynamicsF) A) and E)
G) All of the above

Question 8

In ecology a community that remains fairly constant over time is referred to as a:

Accepted Answer

A)  Successful community
B)  Climax community
C)  Keystone community
D)  Primary community
E)  Tertiary communityF) None of the above
G) All of the above

Question 9

The cause of the sea otter population decline in the Pacific Northwest was primarily an oil spill.

Accepted Answer

A) True 
 B)False

Question 10

A food chain is a series of organisms that:

Accepted Answer

A)  Successively eat one another
B)  Share the same niche
C)  Exhibit mutualism with each other
D)  Share the same energy source
E)  Succeed one another as a climax community developsF) B) and C)
G) A) and E)

Question 11

An insect that resembles the face of a snake is using ___ to avoid predation.

Accepted Answer

A)  Camouflage
B)  Warning coloration
C)  Mimicry
D)  Chemical defense
E)  MutualismF) B) and E)
G) A) and B)

Question 12

A species that is so important to its community (such as the sea otter) that their removal can dismantle a food web is termed a:

Accepted Answer

A)  Capstone species
B)  Flagstone species
C)  Cobblestone species
D)  Cornerstone species
E)  Keystone speciesF) B) and D)
G) A) and C)

Question 13

The physical place where members of a population typically live is termed a:

Accepted Answer

A)  Competitive zone
B)  Community
C)  Habitat
D)  Symbiont
E)  NicheF) D) and E)
G) A) and D)

Question 14

Zooplankton are which of the following?

Accepted Answer

A)  Tertiary consumers
B)  Secondary consumers
C)  Producers
D)  Decomposer
E)  Primary consumerF) A) and B)
G) C) and D)

Question 15

___________________ states that two species cannot coexist indefinitely in the same niche.

Accepted Answer

A)  Endosymbiotic theory
B)  Zonal exclusion theory
C)  Co-inclusion principle
D)  Second law of thermodynamics
E)  Competitive exclusion principleF) B) and D)
G) All of the above

Question 16

In ______________________ bacteria return nitrogen to the atmosphere by converting nitrates to N2.

Accepted Answer

A)  Nitrogen-fixing
B)  Nitrification
C)  Denitrification
D)  Transpiration
E)  RespirationF) B) and E)
G) A) and E)

Question 17

A gradual change in a community's species composition,occurring as competing organisms respond to and modify the physical environment is termed:

Accepted Answer

A)  Ecological completion
B)  Ecological conversion
C)  Ecological climax
D)  Ecological magnification
E)  Ecological successionF) C) and E)
G) B) and D)

Question 18

What adaptations would panic grass growing at 65°C need to employ to avoid dehydration?

Accepted Answer

A)  Transpiration would increase
B)  Uptake of water through the phloem would increase
C)  Transport of sugars through the xylem would decrease
D)  Their stomata would be closed
E)  Their flowers would openF) A) and B)
G) A) and D)

Question 19

A plant that can grow in soil temperatures of 65°C is occupying _________.

Accepted Answer

A)  An ecosystem
B)  A biome
C)  A niche
D)  A community
E)  A littoral zoneF) A) and B)
G) A) and C)

Question 20

Panic grass is a(an) ________.

Accepted Answer

A)  Monocot
B)  Dicot
C)  Algae
D)  Seedless plant
E)  BryophyteF) A) and E)
G) A) and C)

Exam 37: Communities and Ecosystems

The total of all the resources,both biotic and abiotic,a species exploits for its survival,growth,and reproduction is its:

Correct AnswerverifiedShow Answer

In ecology a community that remains fairly constant over time is referred to as a:

Correct AnswerverifiedShow Answer

In ______________________ bacteria return nitrogen to the atmosphere by converting nitrates to N2.

Correct AnswerverifiedShow Answer

A gradual change in a community's species composition,occurring as competing organisms respond to and modify the physical environment is termed:

Correct AnswerverifiedShow Answer

A food chain is a series of organisms that:

Correct AnswerverifiedShow Answer

A genetic change in one species that selects for a subsequent change in a different species is termed:

Correct AnswerverifiedShow Answer

Carbon returns to the atmosphere:

Correct AnswerverifiedShow Answer

What adaptations would panic grass growing at 65°C need to employ to avoid dehydration?

Correct AnswerverifiedShow Answer

The "net primary productivity" is:

Correct AnswerverifiedShow Answer

___________________ states that two species cannot coexist indefinitely in the same niche.

Correct AnswerverifiedShow Answer

An insect that resembles the face of a snake is using ___ to avoid predation.

Correct AnswerverifiedShow Answer

The cause of the sea otter population decline in the Pacific Northwest was primarily an oil spill.

Correct AnswerverifiedShow Answer

Zooplankton are which of the following?

Correct AnswerverifiedShow Answer

The physical place where members of a population typically live is termed a:

Correct AnswerverifiedShow Answer

A plant that can grow in soil temperatures of 65°C is occupying _________.

Correct AnswerverifiedShow Answer

A species that is so important to its community (such as the sea otter) that their removal can dismantle a food web is termed a:

Correct AnswerverifiedShow Answer

Energy flows in only one direction through an ecosystem.

Correct AnswerverifiedShow Answer

Panic grass is a(an) ________.

Correct AnswerverifiedShow Answer

A type of symbiosis in which both species benefit is:

Correct AnswerverifiedShow Answer

In biosphere II,the system did not remain totally self-contained because soil bacteria produced more CO2 than anticipated requiring oxygen to be pumped in from outside.

Correct AnswerverifiedShow Answer

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In ______________________ bacteria return nitrogen to the atmosphere by converting nitrates to N₂.

Correct Answer
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Correct Answer
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Correct Answer
verified

In biosphere II,the system did not remain totally self-contained because soil bacteria produced more CO₂ than anticipated requiring oxygen to be pumped in from outside.

Correct Answer
verified