Question 1

Competition between species is called ____________ competition.

Accepted Answer

A) interspecific 
B) exploitative 
C) interference 
D) fundamental 
E) intraspecific 
A) interspecific 
B) exploitative 
C) interference 
D) fundamental 
E) intraspecific

Question 2

Plant morphological defenses do not include

Accepted Answer

A) spikes and thorns. 
B) secondary compounds. 
C) plant hairs. 
D) deposits of silica-like substances in the leaves. 
E) nectar in the flowers. 
A) spikes and thorns. 
B) secondary compounds. 
C) plant hairs. 
D) deposits of silica-like substances in the leaves. 
E) nectar in the flowers.

Question 3

Imagine two related species that have non-overlapping ranges.If the following events involving these two species were arranged in the order they likely occurred,which event would be third?

Accepted Answer

A) sympatry 
B) character displacement 
C) interspecific competition 
D) range extension 
E) resource partitioning 
A) sympatry 
B) character displacement 
C) interspecific competition 
D) range extension 
E) resource partitioning

Question 4

Chemicals that play the dominant role in protecting plants from being eaten by herbivores or predators are called

Accepted Answer

A) primary compounds. 
B) secondary compounds. 
C) poisons. 
D) oils. 
E) amino acids. 
A) primary compounds. 
B) secondary compounds. 
C) poisons. 
D) oils. 
E) amino acids.

Question 5

Choose the letter of the best match from the following:
-Organisms are not specially protected and develop strategies to blend in the surroundings.

Accepted Answer

A) coevolution 
B) aposematic coloration 
C) cryptic coloration 
D) secondary chemical compounds 
E) Batesian mimicry 
A) coevolution 
B) aposematic coloration 
C) cryptic coloration 
D) secondary chemical compounds 
E) Batesian mimicry

Question 6

Choose the letter of the best match from the following:
-Most important in the defense of plants against herbivores;compounds are characteristic of individual plant families.

Accepted Answer

A) coevolution 
B) aposematic coloration 
C) cryptic coloration 
D) secondary chemical compounds 
E) Batesian mimicry 
A) coevolution 
B) aposematic coloration 
C) cryptic coloration 
D) secondary chemical compounds 
E) Batesian mimicry

Question 7

A symbiotic relationship in which both organisms benefit is

Accepted Answer

A) parasitism. 
B) mutualism. 
C) commensalism. 
D) tolerance. 
E) predation. 
A) parasitism. 
B) mutualism. 
C) commensalism. 
D) tolerance. 
E) predation.

Question 8

Which of the following statements about mimicry is false?

Accepted Answer

A) Generally,the number of mimics in a Müllerian mimicry system must be less than the number of models. 
B) Both Batesian and Müllerian mimicry depend on the ability of the predator to learn. 
C) In Müllerian mimicry,the participants are both mimics and models. 
D) In Batesian mimicry,the participants are either mimics or models. 
E) Batesian mimicry can best be described as parasitism;Müllerian mimicry can best be described as mutualism. 
A) Generally,the number of mimics in a Müllerian mimicry system must be less than the number of models. 
B) Both Batesian and Müllerian mimicry depend on the ability of the predator to learn. 
C) In Müllerian mimicry,the participants are both mimics and models. 
D) In Batesian mimicry,the participants are either mimics or models. 
E) Batesian mimicry can best be described as parasitism;Müllerian mimicry can best be described as mutualism.

Question 9

Communities evolve to have greater biomass and species richness in a process called

Accepted Answer

A) symbiosis. 
B) higher productivity. 
C) spatial heterogeneity. 
D) predictability. 
E) succession. 
A) symbiosis. 
B) higher productivity. 
C) spatial heterogeneity. 
D) predictability. 
E) succession.

Question 10

Aposematic,or warning coloration,serves to protect an animal or plant by signaling to potential ________ to stay away.

Accepted Answer

A) competitors 
B) predators 
C) mates 
D) rivals 
A) competitors 
B) predators 
C) mates 
D) rivals

Question 11

In ________ mimicry,two or more unrelated but protected species resemble one another,thus achieving a kind of group defense.

Accepted Answer

A) Batesian 
B) disruptive 
C) Müllerian 
D) cooperative 
A) Batesian 
B) disruptive 
C) Müllerian 
D) cooperative

Question 12

Which statement is an accurate interpretation of the outcome in an ecosystem when a major predator is removed?

Accepted Answer

A) The remaining community adjusts and quickly becomes stable. 
B) The diversity of the ecosystem actually increases. 
C) The diversity of the ecosystem decreases since there is an increase in competition. 
D) The diversity of the ecosystem decreases because parasites become more of a problem. 
E) The diversity of the ecosystem decreases because new herbivores move in. 
A) The remaining community adjusts and quickly becomes stable. 
B) The diversity of the ecosystem actually increases. 
C) The diversity of the ecosystem decreases since there is an increase in competition. 
D) The diversity of the ecosystem decreases because parasites become more of a problem. 
E) The diversity of the ecosystem decreases because new herbivores move in.

Question 13

Some insects that lack any specific chemical defenses blend with their environment to avoid predators.This type of defense strategy is called

Accepted Answer

A) Batesian mimicry. 
B) apoptosis. 
C) cryptic coloration. 
D) warning coloration. 
E) Müllerian mimicry. 
A) Batesian mimicry. 
B) apoptosis. 
C) cryptic coloration. 
D) warning coloration. 
E) Müllerian mimicry.

Question 14

All of the following factors can be important in determining the difference between a species' fundamental and realized niches.Select the exception.

Accepted Answer

A) physical environment 
B) interspecific competition 
C) presence of a predator/parasite 
D) intraspecific competition 
E) presence of a commensalist that benefits 
A) physical environment 
B) interspecific competition 
C) presence of a predator/parasite 
D) intraspecific competition 
E) presence of a commensalist that benefits

Question 15

A herbivore can avoid competition from other species for food by acquiring the ability to

Accepted Answer

A) be tolerant to some secondary compounds,allowing it to feed on an underutilized resource. 
B) be tolerant to some primary compounds,allowing it to feed on an over utilized resource. 
C) become dormant and not require energy during hot,dry summer months. 
D) alter its reproductive behavior,allowing it to utilize scarce resources. 
E) switch to exploitative competition. 
A) be tolerant to some secondary compounds,allowing it to feed on an underutilized resource. 
B) be tolerant to some primary compounds,allowing it to feed on an over utilized resource. 
C) become dormant and not require energy during hot,dry summer months. 
D) alter its reproductive behavior,allowing it to utilize scarce resources. 
E) switch to exploitative competition.

Question 16

If in a relationship the organism growing on the host benefits,and the host is unharmed,the relationship is called

Accepted Answer

A) parasitism. 
B) mutualism. 
C) commensalism. 
D) tolerance. 
E) predation. 
A) parasitism. 
B) mutualism. 
C) commensalism. 
D) tolerance. 
E) predation.

Question 17

Lakes become eutrophic by

Accepted Answer

A) accumulation of organic matter. 
B) loss of organic matter. 
C) circulation of water in the lake. 
D) free exchange of water with outside sources. 
E) an increase in the number of organisms. 
A) accumulation of organic matter. 
B) loss of organic matter. 
C) circulation of water in the lake. 
D) free exchange of water with outside sources. 
E) an increase in the number of organisms.

Question 18

Which one of the following statements correctly defines the concept "ecotone" and describes its importance in the debate over what determines the makeup and functioning of communities?

Accepted Answer

A) An ecotone is a place where the environment changes abruptly and that some plant communities are distinct in adjacent areas supports the individualistic concept of communities. 
B) An ecotone is a place where the environment changes abruptly and that some plant communities are distinct in adjacent areas supports the holistic concept of communities. 
C) An ecotone is a place where the environment changes gradually and that some plant communities are distinct in adjacent areas supports the individualistic concept of communities. 
D) An ecotone is a place where the environment changes gradually and that some plant communities are distinct in adjacent areas supports the holistic concept of communities. 
E) An ecotone is a place where the environment changes abruptly,but the communities living in adjacent areas do not.This supports neither the individualistic nor the holistic concepts. 
A) An ecotone is a place where the environment changes abruptly and that some plant communities are distinct in adjacent areas supports the individualistic concept of communities. 
B) An ecotone is a place where the environment changes abruptly and that some plant communities are distinct in adjacent areas supports the holistic concept of communities. 
C) An ecotone is a place where the environment changes gradually and that some plant communities are distinct in adjacent areas supports the individualistic concept of communities. 
D) An ecotone is a place where the environment changes gradually and that some plant communities are distinct in adjacent areas supports the holistic concept of communities. 
E) An ecotone is a place where the environment changes abruptly,but the communities living in adjacent areas do not.This supports neither the individualistic nor the holistic concepts.

Question 19

Insects that lay eggs on living hosts are called

Accepted Answer

A) ectoparasites. 
B) endoparasites. 
C) brood parasites. 
D) parasitoids. 
E) predators. 
A) ectoparasites. 
B) endoparasites. 
C) brood parasites. 
D) parasitoids. 
E) predators.

Question 20

Which of the following statements about symbiotic relationships is false?

Accepted Answer

A) Plant-pollinator interaction is a good example of mutualism. 
B) Both mutualisms and commensalisms result from the process of coevolution. 
C) It is sometimes difficult to determine if a specific relationship is mutualism,commensalism,or parasitism. 
D) Parasites can sometimes influence the behavior of their hosts to facilitate completion of their life cycles. 
E) Mutualists sometimes become parasites. 
A) Plant-pollinator interaction is a good example of mutualism. 
B) Both mutualisms and commensalisms result from the process of coevolution. 
C) It is sometimes difficult to determine if a specific relationship is mutualism,commensalism,or parasitism. 
D) Parasites can sometimes influence the behavior of their hosts to facilitate completion of their life cycles. 
E) Mutualists sometimes become parasites.

Exam 57: Community of Ecology

Competition between species is called ____________ competition.

Plant morphological defenses do not include

Imagine two related species that have non-overlapping ranges.If the following events involving these two species were arranged in the order they likely occurred,which event would be third?

Chemicals that play the dominant role in protecting plants from being eaten by herbivores or predators are called

Choose the letter of the best match from the following: -Organisms are not specially protected and develop strategies to blend in the surroundings.

Choose the letter of the best match from the following: -Most important in the defense of plants against herbivores;compounds are characteristic of individual plant families.

A symbiotic relationship in which both organisms benefit is

Which of the following statements about mimicry is false?

Communities evolve to have greater biomass and species richness in a process called

Aposematic,or warning coloration,serves to protect an animal or plant by signaling to potential ________ to stay away.

In ________ mimicry,two or more unrelated but protected species resemble one another,thus achieving a kind of group defense.

Which statement is an accurate interpretation of the outcome in an ecosystem when a major predator is removed?

Some insects that lack any specific chemical defenses blend with their environment to avoid predators.This type of defense strategy is called

All of the following factors can be important in determining the difference between a species' fundamental and realized niches.Select the exception.

A herbivore can avoid competition from other species for food by acquiring the ability to

If in a relationship the organism growing on the host benefits,and the host is unharmed,the relationship is called

Lakes become eutrophic by

Which one of the following statements correctly defines the concept "ecotone" and describes its importance in the debate over what determines the makeup and functioning of communities?

Insects that lay eggs on living hosts are called

Which of the following statements about symbiotic relationships is false?

The Science of Biology

The Nature of Molecules

The Chemical Building Blocks of Life

Cell Structure

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Energy and Metabolism

How Cells Harvest Energy

Photosynthesis

Cell Communication

How Cells Divide

Sexual Reproduction and Meiosis

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Chromosomes Mapping and the Meiosis - Inheritance Connection

Dna: the Genetic Material

Genes and How They Work

Control of Gene Expression

Biotechnology

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Genes Within Populations

The Evidence for Evolution

The Origin of Species

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