Question 1

The defensive tactic in which prey reduce their individual probability of being eaten by occurring at very high densities is called

Accepted Answer

A)   prey satiation.
B)   prey dilution.
C)   predator dilution.
D)   predator satiation.
E)   predator masting.

Question 2

Plagiorhynchus worms and Puccinia rusts are parasites that share the ability to change their host's behavior in way that

Accepted Answer

A)   increase the length of time they can survive in their hosts.
B)   decrease their host's mortality rates.
C)   increase their hosts reproduction, thereby increasing production of parasite-infected offspring.
D)   increase the likelihood of their (the parasites')  transmission to a new host.
E)   decrease the hosts' vulnerability to other parasites.

Question 3

In the Lotka-Volterra predation model, the predator death rate is represented by

Accepted Answer

A)   c.
B)   p.
C)   cp.
D)   dpNp.
E)   dp.

Question 4

Ephemerellid mayflies under attack by stoneflies will typically

Accepted Answer

A)   swim away to escape possible predation.
B)   rely on their cryptic coloration to escape detection.
C)   rely on their spiny appendages to deter attack.
D)   adopt a posture which increases their apparent size, so that the predator will avoid them.
E)   burrow into the stream bottom.

Question 5

Bats affect the cost of agriculture because

Accepted Answer

A)   they consume crops and must be controlled.
B)   they eat crop pests and reduce the amount of pesticides used.
C)   they eat crop pests and reduce the amount of crop loss.
D)   they eat crop pests and reduce both the amount of crop loss and the amount of pesticides used.
E)   their flight patterns interfere with agricultural machinery.

Question 6

In the Lotka-Volterra predation model, a predator population in the absence of prey (hosts)  would

Accepted Answer

A)   grow exponentially.
B)   grow logistically.
C)   decline as predators die.
D)   decline at first, but then increase as predators switch to other modes of feeding.
E)   decline at first, but then reach a small equilibrium population size.

Question 7

__________ consume live plant material but do not usually kill plants.

Accepted Answer

A)   Predators
B)   Pathogens
C)   Herbivores
D)   Parasites
E)   Parasitoids

Question 8

Birds are more effective predators than bats on foliage-living arthropods in tropical lowland forests.

Accepted Answer

A) True 
 B)False

Exam 14: Exploitative Interactions Predation, Herbivory, Parasitism, and Disease

Ephemerellid mayflies under attack by stoneflies will typically

Correct Answer
verified

Plagiorhynchus worms and Puccinia rusts are parasites that share the ability to change their host's behavior in way that

Correct Answer
verified

Birds are more effective predators than bats on foliage-living arthropods in tropical lowland forests.

Correct Answer
verified

In the Lotka-Volterra predation model, the predator death rate is represented by

Correct Answer
verified

Bats affect the cost of agriculture because

Correct Answer
verified

__________ consume live plant material but do not usually kill plants.

Correct Answer
verified

In the Lotka-Volterra predation model, a predator population in the absence of prey (hosts) would

Correct Answer
verified

The defensive tactic in which prey reduce their individual probability of being eaten by occurring at very high densities is called

Correct Answer
verified

Exam 14: Exploitative Interactions Predation, Herbivory, Parasitism, and Disease

Ephemerellid mayflies under attack by stoneflies will typically

Correct AnswerverifiedShow Answer

Plagiorhynchus worms and Puccinia rusts are parasites that share the ability to change their host's behavior in way that

Correct AnswerverifiedShow Answer

Birds are more effective predators than bats on foliage-living arthropods in tropical lowland forests.

Correct AnswerverifiedShow Answer

In the Lotka-Volterra predation model, the predator death rate is represented by

Correct AnswerverifiedShow Answer

Bats affect the cost of agriculture because

Correct AnswerverifiedShow Answer

__________ consume live plant material but do not usually kill plants.

Correct AnswerverifiedShow Answer

In the Lotka-Volterra predation model, a predator population in the absence of prey (hosts) would

Correct AnswerverifiedShow Answer

The defensive tactic in which prey reduce their individual probability of being eaten by occurring at very high densities is called

Correct AnswerverifiedShow Answer

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Correct Answer
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