Question 1

-In Figure 34.03,the carrying capacity of the environment occurs at number

Accepted Answer

A)   1.
B)   2.
C)   3.
D)   4.
E)   5.F) A) and C)
G) A) and B)

Question 2

A number of populations of different species interacting with one another is called

Accepted Answer

A)   competition.
B)   a community.
C)   an ecosystem.
D)   predation.
E)   symbiosis.F) A) and D)
G) A) and E)

Question 3

Interaction between two species as both attempt to use the same environmental resources is

Accepted Answer

A)   competition.
B)   a community.
C)   an ecosystem.
D)   predation.
E)   symbiosis.F) None of the above
G) A) and B)

Question 4

A form of symbiosis in which one participant benefits and the other apparently is not benefited nor harmed is

Accepted Answer

A)   commensalism.
B)   parasitism.
C)   mutualism.
D)   coevolution.
E)   symbiosis.F) A) and B)
G) A) and E)

Question 5

During mutualism one species benefits while the other is harmed.

Accepted Answer

A) True 
 B)False

Question 6

If a population has many more young women entering the reproductive years than older women leaving the reproductive years,which of the following statements is NOT true?

Accepted Answer

A)   The growth rate will most likely increase.
B)   The replacement reproduction will give a positive growth rate.
C)   It is likely to be a MDC.
D)   It is likely to be a LDC.
E)   The population will continue to grow as more young women enter the reproductive phase.F) A) and C)
G) A) and E)

Question 7

Consider the consequences of a harmless prey that evolves toward mimicry of a model that has an anti-predator defense-Batesian mimicry.What happens to the effectiveness of this defense as more and more prey in the population are harmless mimics? Then consider what happens when a species with bad taste evolves to resemble a model that stings (Müllerian mimicry) .

Accepted Answer

A)   The number of Müllerian mimics is limited because they dilute the protection afforded by the warning color pattern, but the addition of more Batesian mimics only strengthens the protective mimicry complex.
B)   The number of Batesian mimics is limited because they dilute the protection afforded by the warning color pattern, but the addition of more Müllerian mimics only strengthens the protective mimicry complex.
C)   The number of both Batesian and Müllerian mimics is limited because both dilute the protection afforded by the warning color pattern.
D)   The number of both Batesian and Müllerian mimics is unlimited because they both reinforce the protection afforded by the warning color pattern.
E)   The number of Batesian mimics is unlimited, but the addition of more Müllerian mimics dilutes the protective mimicry complex.F) A) and D)
G) A) and E)

Question 8

In a population of 150 organisms over a six month period there are 75 births and 30 deaths.Calculate the growth rate for those six months

Accepted Answer

A)   0.7
B)   0.5
C)   0.2
D)   0.3
E)   0.75F) B) and E)
G) A) and C)

Question 9

Which of the following describes a type III survivorship curve (drawn by plotting the number of individuals in a given population alive at the beginning of each age interval) ?

Accepted Answer

A)   Most individuals die of old age.
B)   Many individuals die early in life.
C)   Individuals die at a constant rate throughout time.
D)   Most individuals die during their reproductive years.
E)   Most individuals die before old age, but after their reproductive years.F) A) and B)
G) A) and C)

Question 10

The climax pattern model states that the same area will always lead to a specific type of community if it is given a sufficient amount of time.Which of the following statements is true of this model?

Accepted Answer

A)   In recent time this has been modified to recognize that while the area may return to the same biome it may not have exactly the same species diversity.
B)   An area that has been disturbed must always return to the same climax community if given enough time.
C)   It is necessary for an area to return to the climax community before it is disturbed again or the area will undergo primary succession on a second disturbance.
D)   The area must undergo primary and then secondary succession before it can reach the climax community.
E)   In recent time this model has been changed to state that the climax community cycles through a series of different possibilities.F) B) and E)
G) A) and E)

Exam 34: Population and Community Ecology

-In Figure 34.03,the carrying capacity of the environment occurs at number

Correct Answer
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If a population has many more young women entering the reproductive years than older women leaving the reproductive years,which of the following statements is NOT true?

Correct Answer
verified

A form of symbiosis in which one participant benefits and the other apparently is not benefited nor harmed is

Correct Answer
verified

Correct Answer
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Interaction between two species as both attempt to use the same environmental resources is

Correct Answer
verified

In a population of 150 organisms over a six month period there are 75 births and 30 deaths.Calculate the growth rate for those six months

Correct Answer
verified

Which of the following describes a type III survivorship curve (drawn by plotting the number of individuals in a given population alive at the beginning of each age interval) ?

Correct Answer
verified

The climax pattern model states that the same area will always lead to a specific type of community if it is given a sufficient amount of time.Which of the following statements is true of this model?

Correct Answer
verified

A number of populations of different species interacting with one another is called

Correct Answer
verified

During mutualism one species benefits while the other is harmed.

Correct Answer
verified

Exam 34: Population and Community Ecology

-In Figure 34.03,the carrying capacity of the environment occurs at number

Correct AnswerverifiedShow Answer

If a population has many more young women entering the reproductive years than older women leaving the reproductive years,which of the following statements is NOT true?

Correct AnswerverifiedShow Answer

A form of symbiosis in which one participant benefits and the other apparently is not benefited nor harmed is

Correct AnswerverifiedShow Answer

Correct AnswerverifiedShow Answer

Interaction between two species as both attempt to use the same environmental resources is

Correct AnswerverifiedShow Answer

In a population of 150 organisms over a six month period there are 75 births and 30 deaths.Calculate the growth rate for those six months

Correct AnswerverifiedShow Answer

Which of the following describes a type III survivorship curve (drawn by plotting the number of individuals in a given population alive at the beginning of each age interval) ?

Correct AnswerverifiedShow Answer

The climax pattern model states that the same area will always lead to a specific type of community if it is given a sufficient amount of time.Which of the following statements is true of this model?

Correct AnswerverifiedShow Answer

A number of populations of different species interacting with one another is called

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During mutualism one species benefits while the other is harmed.

Correct AnswerverifiedShow Answer

Correct Answer
verified

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