Question 1

Epiphytes growing on tropical trees exemplify

Accepted Answer

A)  Mutualism
B)  Predation
C)  Parasitism
D)  Commensalism
E)  Intraspecific competition

Question 2

A generalist is a species that

Accepted Answer

A)  Occupies a large habitat range
B)  Occupies a wide range of ecological niches
C)  Can reproduce under highly variable conditions
D)  Can reproduce only under specific conditions
E)  None of these are characteristics of a generalist species

Question 3

"Abundance" describes the total number of _________ while "diversity" describes the number of _________.

Accepted Answer

A)  Species in a community; individual organisms in a community
B)  Organisms in a community; species in a community
C)  Individuals in a niche; niches available to a given species
D)  Species in a bioregion; trophic levels in a community
E)  Biomes; habitats available for different species

Question 4

The most common reason that introduced species negatively impact an environment is because they

Accepted Answer

A)  Are larger than native species
B)  Disrupt preexisting niches
C)  Are unusually efficient predators
D)  None of these is correct

Question 5

A community that changes very little over time is said to have great

Accepted Answer

A)  Renewal ability
B)  Complexity
C)  Diversity
D)  Constancy
E)  Connectedness

Question 6

Predation influences evolution when

Accepted Answer

A)  Prey species develop defensive characteristics over generations
B)  An individual predator adapts and becomes more efficient in catching its prey
C)  Predators kill off all of their prey
D)  A population of predators develop defensive characteristics
E)  Prey species change their reproductive rate to match predation in the local ecosystem

Question 7

Use the following example:
A species can withstand a narrow range of temperature. Above 100 ∘\circ∘ F there are no species present. In the range from 97 ∘\circ∘ F to 100 ∘\circ∘ F and 90 ∘\circ∘ F to 94 ∘\circ∘ F there are a few species present. Below 90 ∘\circ∘ F there are no species present.

-What would you label the range of temperature from 95 ∘\circ∘ F to 96 ∘\circ∘ F for this particular species in the scenario?

Accepted Answer

A)  Zone of intolerance
B)  Tolerance limit range
C)  Zone of physiological stress
D)  Optimal range
E)  Range of tolerance

Question 8

In some species, young individuals float freely as plankton while mature members are fixed on the seafloor.This is an effective strategy because

Accepted Answer

A)  The different life phases of these species do not compete for food
B)  Fixed adults are more likely to survive
C)  Predators cannot catch plankton
D)  The adults can find mates more readily

Question 9

____________________ is the term used to describe two species that look alike and are both danergous or unpalatable.

Accepted Answer

A)  Mullerian mimicry
B)  Batesian mimicry
C)  Symbiosis
D)  Commensalism

Question 10

A keystone species is a species whose presence

Accepted Answer

A)  Is the main reason a community exists
B)  Provides food for all other species in a community
C)  Is an indicator of environmental health
D)  Influences the population size of many other species in its community
E)  Is always at the top of the trophic levels as a top predator

Question 11

Evolution occurs as a result of

Accepted Answer

A)  The discovery of a desirable characteristic in a population
B)  An individual's physiological modification
C)  An environmental change that forces modification in a resident species
D)  Better survival or reproduction rates by individuals with a particular characteristic
E)  A population's physiological modification

Question 12

Primary succession occurs when a community develops ____________ while secondary succession occurs when one ________.

Accepted Answer

A)  Into a climax community; species replaces another
B)  And replaces another; ecosystem becomes stable
C)  On bare rock; biological community replaces another
D)  And then fails; niche changes
E)  Intraspecific competition; experiences interspecific competition

Question 13

A biological community's productivity is a measure of

Accepted Answer

A)  Its number of species
B)  The number of individuals in the community
C)  Available solar energy that can be converted to biomass
D)  The amount of biomass produced in the community
E)  All of these are combined in measuring a community's productivity

Question 14

As ecological development proceeds, a biological community

Accepted Answer

A)  Gradually stagnates
B)  Becomes more diverse
C)  Goes through repeated secondary succession stages
D)  Goes through repeated primary succession stages
E)  Becomes less complex

Question 15

Complexity in an ecological community has to do with the number of

Accepted Answer

A)  Species in the population
B)  Species at each trophic level
C)  Genetic variations within a species
D)  Primary producers available
E)  Primary producers relative to the number of consumers

Question 16

Symbiosis means

Accepted Answer

A)  A relationship in which both species benefit
B)  A parasitic relationship
C)  Commensalism
D)  Living together
E)  A relationship in which one species benefits and the other does not benefit

Question 17

Which of the following is NOT a strategy for successfully avoiding interspecific competition?

Accepted Answer

A)  Eating fruit before it is ripe for other species
B)  Trees spreading seeds or offspring far and fast
C)  Producing substances that are toxic to competitors
D)  All of these are strategies for successful interspecific competition

Question 18

Which of the following fish species would be the best indicator of clean, well-oxygenated water?

Accepted Answer

A)  Carp
B)  Largemouth bass
C)  Catfish
D)  Rainbow trout
E)  Sunfish

Question 19

In the coastal forest of Oregon an area was clear-cut for logging.Trees at the edge of the clearing and 200 meters into the forest died within a few months after the logging began.What is the best explanation for the death of the trees?

Accepted Answer

A)  The trees at the edge of the forest were more prone to disease
B)  Increased sunlight, wind and temperature negatively affected the trees
C)  The roots of all of the trees were damaged
D)  Nitrogen fixing bacteria in the roots of the trees were killed

Question 20

Humans can best be described as

Accepted Answer

A)  Occupying a narrow niche
B)  An example of convergent evolution
C)  Outside the rules of natural selection
D)  Specialists
E)  Generalists

Exam 4: Evolution, Biological Communities, and Species Interactions

Predation influences evolution when

Correct Answer
verified

Epiphytes growing on tropical trees exemplify

Correct Answer
verified

A keystone species is a species whose presence

Correct Answer
verified

Evolution occurs as a result of

Correct Answer
verified

Correct Answer
verified

Which of the following fish species would be the best indicator of clean, well-oxygenated water?

Correct Answer
verified

Symbiosis means

Correct Answer
verified

A biological community's productivity is a measure of

Correct Answer
verified

Which of the following is NOT a strategy for successfully avoiding interspecific competition?

Correct Answer
verified

As ecological development proceeds, a biological community

Correct Answer
verified

Complexity in an ecological community has to do with the number of

Correct Answer
verified

In the coastal forest of Oregon an area was clear-cut for logging.Trees at the edge of the clearing and 200 meters into the forest died within a few months after the logging began.What is the best explanation for the death of the trees?

Correct Answer
verified

____________________ is the term used to describe two species that look alike and are both danergous or unpalatable.

Correct Answer
verified

A community that changes very little over time is said to have great

Correct Answer
verified

"Abundance" describes the total number of _ while "diversity" describes the number of _.

Correct Answer
verified

In some species, young individuals float freely as plankton while mature members are fixed on the seafloor.This is an effective strategy because

Correct Answer
verified

The most common reason that introduced species negatively impact an environment is because they

Correct Answer
verified

Primary succession occurs when a community develops ____ while secondary succession occurs when one .

Correct Answer
verified

A generalist is a species that

Correct Answer
verified

Humans can best be described as

Correct Answer
verified

Exam 4: Evolution, Biological Communities, and Species Interactions

Predation influences evolution when

Correct AnswerverifiedShow Answer

Epiphytes growing on tropical trees exemplify

Correct AnswerverifiedShow Answer

A keystone species is a species whose presence

Correct AnswerverifiedShow Answer

Evolution occurs as a result of

Correct AnswerverifiedShow Answer

Correct AnswerverifiedShow Answer

Which of the following fish species would be the best indicator of clean, well-oxygenated water?

Correct AnswerverifiedShow Answer

Symbiosis means

Correct AnswerverifiedShow Answer

A biological community's productivity is a measure of

Correct AnswerverifiedShow Answer

Which of the following is NOT a strategy for successfully avoiding interspecific competition?

Correct AnswerverifiedShow Answer

As ecological development proceeds, a biological community

Correct AnswerverifiedShow Answer

Complexity in an ecological community has to do with the number of

Correct AnswerverifiedShow Answer

In the coastal forest of Oregon an area was clear-cut for logging.Trees at the edge of the clearing and 200 meters into the forest died within a few months after the logging began.What is the best explanation for the death of the trees?

Correct AnswerverifiedShow Answer

____________________ is the term used to describe two species that look alike and are both danergous or unpalatable.

Correct AnswerverifiedShow Answer

A community that changes very little over time is said to have great

Correct AnswerverifiedShow Answer

"Abundance" describes the total number of _________ while "diversity" describes the number of _________.

Correct AnswerverifiedShow Answer

In some species, young individuals float freely as plankton while mature members are fixed on the seafloor.This is an effective strategy because

Correct AnswerverifiedShow Answer

The most common reason that introduced species negatively impact an environment is because they

Correct AnswerverifiedShow Answer

Primary succession occurs when a community develops ____________ while secondary succession occurs when one ________.

Correct AnswerverifiedShow Answer

A generalist is a species that

Correct AnswerverifiedShow Answer

Humans can best be described as

Correct AnswerverifiedShow Answer

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"Abundance" describes the total number of _ while "diversity" describes the number of _.

Correct Answer
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Correct Answer
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Primary succession occurs when a community develops ____ while secondary succession occurs when one .

Correct Answer
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