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Ecology Problem Drill – 19: Predation, Parasitism, Herbivory and Mimicry Questions
Question No. 1 of 10
Instruction: (1) Read the problem statement and answer choices carefully (2) Work the problems on paper as needed (3)
Pick the answer (4) Go back to review the core concept tutorial as needed.
Question 1. The concept of mimicry focuses on which of the following:
Question #01
(A)
(B)
(C)
(D)
(E)
Resemblance between predator and prey
Omnivory and herbivory
Foraging strategy
Resemblance between model and mimic
None of the above
A. Incorrect!
Mimicry is based on the resemblance between the model species and its mimic. Therefore this answer is
incorrect.
B. Incorrect!
Mimicry is based on the resemblance between the model species and its mimic. Therefore this answer is
incorrect.
Feedback on
Each Answer
Choice
C. Incorrect!
Foraging strategy refers to the manner in which predators seek their prey, not to the Mimicry is based
on the resemblance between the model species and its mimic. Therefore this answer is incorrect.
D. Correct!
Mimicry is based on the resemblance between the model species and its mimic. Therefore this answer is
correct.
E. Incorrect!
There is one correct answer above.
Mimicry is based on the resemblance between the model species and its mimic. Therefore answer
D is the correct answer.
Solution
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Question No. 2 of 10
Instruction: (1) Read the problem statement and answer choices carefully (2) Work the problems on paper as needed (3)
Pick the answer (4) Go back to review the core concept tutorial as needed.
Question 2. When plant tissue contains chemicals that are toxic to herbivores this is an example of:
Question #02
(A)
(B)
(C)
(D)
(E)
Biological control
Chemical defenses
Mechanical defenses
Resource partitioning
None of the above
A. Incorrect!
Biological control is a method of controlling pests of agricultural importance by using natural predators
instead of pesticides, not a means to discourage herbivory. Therefore answer A is incorrect.
B. Correct!
Chemical defenses are provided by chemicals produced by plants that discourage grazing by herbivores.
Therefore answer B is correct.
Feedback on
Each Answer
Choice
C. Incorrect!
Mechanical defenses include spines, hairs and thorns that discourage herbivores from grazing on plant
tissues, not toxic chemicals produced by plants to discourage grazing. Therefore answer C is incorrect.
D. Incorrect!
Resource partitioning refers to the subdivision of a niche that minimizes competition between similar
species. This does not relate chemicals produced by plants to discourage grazing by herbivores.
Therefore answer D is incorrect.
E. Incorrect!
There is one correct answer above.
Chemical defenses are provided by chemicals produced by plants that discourage grazing by herbivores.
Therefore answer B is correct.
Solution
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Question No. 3 of 10
Instruction: (1) Read the problem statement and answer choices carefully (2) Work the problems on paper as needed (3)
Pick the answer (4) Go back to review the core concept tutorial as needed.
Question 3. A species whose removal from an ecosystem profoundly changes that ecosystem is an
example of a __________ predator.
Question #03
(A)
(B)
(C)
(D)
(E)
Resource limited
Niche
Carnivorous
Apex
None of the above
A. Incorrect!
The removal of a species which is resource limited would not profoundly change that ecosystem.
Therefore answer A is incorrect.
B. Incorrect!
Niche refers to how a species supports itself in its environment, not to the effect its removal would have
on the ecosystem. Therefore answer B is incorrect.
Feedback on
Each Answer
Choice
C. Incorrect!
A carnivorous species feeds on prey for food. Its removal may or may not have a profound impact on its
ecosystem. Therefore answer C is incorrect.
D. Correct!
By definition an apex predator is a predator whose removal will have a profound impact on its
environment. Therefore answer D is correct.
E. Incorrect!
There is one correct answer above.
The definition of a keystone species is a species whose removal would have a profound effect on its
ecosystem. Therefore answer D is correct.
Solution
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Question No. 4 of 10
Instruction: (1) Read the problem statement and answer choices carefully (2) Work the problems on paper as needed (3)
Pick the answer (4) Go back to review the core concept tutorial as needed.
Question 4. Which of the following are forms of herbivory:
Question #04
(A)
(B)
(C)
(D)
(E)
Frugivores
Nectarivores
Granivores
Folivores
All of the above
A. Incorrect!
Although frugivores are a form of herbivory, the other answers also are examples of herbivory in nature.
Therefore answer A is incorrect.
B. Incorrect!
Although nectarivores are a form of herbivory, the other answers also are examples of herbivory in
nature. Therefore answer B is incorrect.
Feedback on
Each Answer
Choice
C. Incorrect!
Although granivores are a form of herbivory, the other answers also are examples of herbivory in
nature. Therefore answer C is incorrect.
D. Incorrect!
Although folivores are a form of herbivory, the other answers also are examples of herbivory in nature.
Therefore answer D is incorrect.
E. Correct!
Frugivores, nectarivores, granivores and folivores are all forms of herbivory in nature. Therefore answer
E is correct.
Frugivores, nectarivores, granivores and folivores are all forms of herbivory in nature. Therefore answer
E is correct.
Solution
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Question No. 5 of 10
Instruction: (1) Read the problem statement and answer choices carefully (2) Work the problems on paper as needed (3)
Pick the answer (4) Go back to review the core concept tutorial as needed.
Question 5. Which of the following terms refer to parasites that feed of their host’s body tissues
without killing their host:
Question #05
(A)
(B)
(C)
(D)
(E)
Biotrophs
Necrotrophs
Parasitoid
Scavenger
None of the above
A. Correct!
A biotroph is a parasite that feeds on its host without killing it. Therefore answer A is correct.
B. Incorrect!
A necrotroph is a parasite that feeds on its host and eventually kills it. Therefore answer B is incorrect.
C. Incorrect!
A parasitoid is another name for necrotroph. Therefore answer C is incorrect.
Feedback on
Each Answer
Choice
D. Incorrect!
Scavengers are organisms that consume dead organic matter and are not parasites. Therefore answer
D must be incorrect.
E. Incorrect!
There is one correct answer above.
A biotroph is a parasite that feeds on its host without killing it. Therefore answer A is correct.
Solution
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Question No. 6 of 10
Instruction: (1) Read the problem statement and answer choices carefully (2) Work the problems on paper as needed (3)
Pick the answer (4) Go back to review the core concept tutorial as needed.
Question 6. ___________________ is a method of controlling pests of agricultural importance by using
natural predators instead of pesticides.
Question #06
(A)
(B)
(C)
(D)
(E)
Renewable resource
Density independence
Biological control
Carrying capacity
None of the above
A. Incorrect!
Biological control is a method of controlling pests of agricultural importance by using natural predators
instead of pesticides. Hence answer A is incorrect.
B. Incorrect!
Biological control is a method of controlling pests of agricultural importance by using natural predators
instead of pesticides. Hence answer B is incorrect.
Feedback on
Each Answer
Choice
C. Correct!
Biological control is a method of controlling pests of agricultural importance by using natural predators
instead of pesticides. Hence answer C is correct.
D. Incorrect!
Carrying capacity is the numbers of individuals an environment can support, not a method of controlling
pests of agricultural importance by using natural predators instead of pesticides. Therefore answer D is
incorrect.
E. Incorrect!
There is one correct answer above.
Biological control is a method of controlling pests of agricultural importance by using natural predators
instead of pesticides. Hence answer C is correct.
Solution
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Question No. 7 of 10
Instruction: (1) Read the problem statement and answer choices carefully (2) Work the problems on paper as needed (3)
Pick the answer (4) Go back to review the core concept tutorial as needed.
Question 7. Epiparasites refer to the following:
Question #07
(A)
(B)
(C)
(D)
(E)
Parasites that live on the surface of other organisms.
Parasites that feed upon other parasites.
Parasites that live within the body of other organisms.
All of the above.
None of the above.
(A). Incorrect!
Epiparasites are parasites that feed upon other parasites. Therefore answer A is incorrect.
B. Correct!
Epiparasites are parasites that feed upon other parasites. Therefore answer B is correct.
Feedback on
Each Answer
Choice
C. Incorrect!
Epiparasites are parasites that feed upon other parasites. Therefore answer C is incorrect.
D. Incorrect!
Since only answer B is correct, answer D must be incorrect.
E. Incorrect!
There is one correct answer above.
By definition epiparasites are parasites that feed upon other parasites. Of the four answers given only
answer B is correct.
Solution
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Question No. 8 of 10
Instruction: (1) Read the problem statement and answer choices carefully (2) Work the problems on paper as needed (3)
Pick the answer (4) Go back to review the core concept tutorial as needed.
Question 8. ____________ are organisms that consume dead or dying organisms for their food:
Question #08
(A)
(B)
(C)
(D)
(E)
Predators
Herbivores
Mimics
A and B
Detrivores
A. Incorrect!
Predators are animals that hunt and kill other animals for food. Therefore answer A is incorrect.
B. Incorrect!
Herbivores are animals that consume plants for food. Therefore answer B is incorrect.
C. Incorrect!
Mimics are organisms that imitate other organisms to increase their prospects for survival. Therefore
answer C is incorrect.
Feedback on
Each Answer
Choice
D. Incorrect!
If answers A and B are incorrect, than answer D must be incorrect.
E. Correct!
Detrivores are organisms that consume dead or dying organisms for food. Therefore answer E is correct.
By definition detrivores are organisms that consume dead or dying organisms for food. Therefore only
answer E is correct.
Solution
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Question No. 9 of 10
Instruction: (1) Read the problem statement and answer choices carefully (2) Work the problems on paper as needed (3)
Pick the answer (4) Go back to review the core concept tutorial as needed.
Question 5. ____ predators refer to predators that feed only on one species of prey organism.
Question #09
(A)
(B)
(C)
(D)
(E)
Generalized
Apex
Specialized
None of the above
All of the above
A. Incorrect!
Generalized predators feed on a variety of prey organisms. Therefore answer A is incorrect.
B. Incorrect!
An apex predator is an organism that is not a prey to any other predator species. Therefore answer B is
incorrect.
Feedback on
Each Answer
Choice
C. Correct!
A specialized predator feeds on only one species of prey organism. Therefore answer C is correct.
D. Incorrect!
There is one correct answer above.
E. Incorrect!
There is one and only one correct answer above.
A specialized predator feeds on only one species of prey organism. Only answer C fits this definition so
it must be correct.
Solution
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Question No. 10 of 10
Instruction: (1) Read the problem statement and answer choices carefully (2) Work the problems on paper as needed (3)
Pick the answer (4) Go back to review the core concept tutorial as needed.
Question 10. The manner in which predators seek their prey and allocate their time and energy to
obtain it is known as ___.
Question #10
(A)
(B)
(C)
(D)
(E)
Foraging strategy
Virulence
Parasitoidism
Mullerian mimicry
None of the above
A. Correct!
Foraging strategy is the manner in which predators allocate their time and energy to obtain prey.
Therefore answer A is correct.
B. Incorrect!
Virulence is the ability of a pathogen to overcome an organism’s defenses. Therefore answer B is
incorrect.
Feedback on
Each Answer
Choice
C. Incorrect!
Parasitoidism occurs when a parasite attacks a host indirectly by laying eggs on it. Therefore answer
C is incorrect.
D. Incorrect!
Mullerian mimicry occurs when both the model organism and its mimic are unpalatable. Therefore
answer D is incorrect.
E. Incorrect!
There is one correct answer above.
Foraging strategy is the manner in which predators allocate their time and energy to obtain prey.
Only answer A fits this definition so it must be correct.
Solution
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