Question 1

Thsimplfoochain, grass >>> zebra >>> lion provides a gooexamplof a pyramiof

Accepted Answer

A) energy. 
B) heat. 
C) symbiosis. 
D) both energy and symbiosis. 
E) energy, heat, and symbiosis. 
A) energy. 
B) heat. 
C) symbiosis. 
D) both energy and symbiosis. 
E) energy, heat, and symbiosis.

Question 2

Which of thfollowing does NOT cyclthrough an ecosystem?

Accepted Answer

A) carbon 
B) water 
C) energy 
D) nitrogen 
E) phosphorus 
A) carbon 
B) water 
C) energy 
D) nitrogen 
E) phosphorus

Question 3

During thprocess of community succession,

Accepted Answer

A) the total biomass remains constant. 
B) there are increasing possibilities for resource partitioning. 
C) the pioneer community quickly gives way to the climax community, followed by a succession of more diverse arrays of organisms. 
D) nutrients cycle more rapidly with time. 
E) all of these occur. 
A) the total biomass remains constant. 
B) there are increasing possibilities for resource partitioning. 
C) the pioneer community quickly gives way to the climax community, followed by a succession of more diverse arrays of organisms. 
D) nutrients cycle more rapidly with time. 
E) all of these occur.

Question 4

Decomposers perfortheir recycling efforts on organisms

Accepted Answer

A) at the end of a food chain. 
B) on the top of a pyramid. 
C) that are producers. 
D) that are consumers. 
E) that are all of these. 
A) at the end of a food chain. 
B) on the top of a pyramid. 
C) that are producers. 
D) that are consumers. 
E) that are all of these.

Question 5

Carbon is storein what form?

Accepted Answer

A) biomass 
B) fossil fuels 
C) limestone rocks 
D) shells of animals 
E) all of these 
A) biomass 
B) fossil fuels 
C) limestone rocks 
D) shells of animals 
E) all of these

Question 6

Which of thfollowing organisms was introducein thUniteStates in order to control thpopulation of RIFAs?

Accepted Answer

A) houseflies 
B) fruit flies 
C) phorid flies 
D) blue bottle flies 
E) flower flies 
A) houseflies 
B) fruit flies 
C) phorid flies 
D) blue bottle flies 
E) flower flies

Question 7

Four of thfivanswers listebelow arheterotrophic.Select thEXCEPTION.

Accepted Answer

A) consumers 
B) carnivores 
C) herbivores 
D) parasites 
E) producers 
A) consumers 
B) carnivores 
C) herbivores 
D) parasites 
E) producers

Question 8

Thplants ananimals now present on acreagfrowhich thtrees werremoveten years earlier represent

Accepted Answer

A) primary succession. 
B) a climax forest. 
C) pioneer species. 
D) secondary succession. 
E) species introduction. 
A) primary succession. 
B) a climax forest. 
C) pioneer species. 
D) secondary succession. 
E) species introduction.

Question 9

Which of thfollowing statements about parasites is TRUE?

Accepted Answer

A) Parasites usually do not kill their hosts. 
B) The parasite species that infects a particular host species becomes less virulent over evolutionary time. 
C) Warm-blooded animals are frequently infected by parasites. 
D) Parasites usually do not kill their hosts, and the parasite species that infects a particular host species becomes less virulent over evolutionary time. 
E) Parasites usually do not kill their hosts, the parasite species that infects a particular host species becomes less virulent over evolutionary time, and warm-blooded animals are frequently infected by parasites. 
A) Parasites usually do not kill their hosts. 
B) The parasite species that infects a particular host species becomes less virulent over evolutionary time. 
C) Warm-blooded animals are frequently infected by parasites. 
D) Parasites usually do not kill their hosts, and the parasite species that infects a particular host species becomes less virulent over evolutionary time. 
E) Parasites usually do not kill their hosts, the parasite species that infects a particular host species becomes less virulent over evolutionary time, and warm-blooded animals are frequently infected by parasites.

Question 10

Endemic means a species

Accepted Answer

A) evolved in one geographic region and does not live elsewhere. 
B) could cause an epidemic at anytime. 
C) is on its way to extinction. 
D) can live in only one habitat. 
E) is extinct. 
A) evolved in one geographic region and does not live elsewhere. 
B) could cause an epidemic at anytime. 
C) is on its way to extinction. 
D) can live in only one habitat. 
E) is extinct.

Question 11

Competitivexclusion is baseupon thidea that

Accepted Answer

A) one species will voluntarily allow the other to survive. 
B) no two species can completely occupy the same niche. 
C) the larger species will dominate the smaller. 
D) competition is overrated as a factor in species survival. 
E) two species can live together, if they share the same niche but only at alternate times. 
A) one species will voluntarily allow the other to survive. 
B) no two species can completely occupy the same niche. 
C) the larger species will dominate the smaller. 
D) competition is overrated as a factor in species survival. 
E) two species can live together, if they share the same niche but only at alternate times.

Question 12

Which of thfollowing woulbmorlikely to affect thhabitat of an animal rather than its niche?

Accepted Answer

A) rainfall 
B) prey abundance 
C) predators 
D) defense mechanisms 
E) competitors 
A) rainfall 
B) prey abundance 
C) predators 
D) defense mechanisms 
E) competitors

Question 13

Primary carnivores are

Accepted Answer

A) tertiary consumers in the third trophic level. 
B) secondary consumers in the third trophic level. 
C) secondary consumers in the second trophic level. 
D) tertiary consumers in the forth trophic level. 
E) also primary producers in aquatic ecosystems. 
A) tertiary consumers in the third trophic level. 
B) secondary consumers in the third trophic level. 
C) secondary consumers in the second trophic level. 
D) tertiary consumers in the forth trophic level. 
E) also primary producers in aquatic ecosystems.

Question 14

In a natural community, thprimary consumers are

Accepted Answer

A) herbivores. 
B) carnivores. 
C) scavengers. 
D) decomposers. 
E) all of these. 
A) herbivores. 
B) carnivores. 
C) scavengers. 
D) decomposers. 
E) all of these.

Question 15

In which of thfollowing ways does thfly kill a firant?

Accepted Answer

A) A female fly lays an egg in the ant's soft tissues, and in the process of development, the resulting larvae kills the ant. 
B) A fly (male or female) injects a poisonous substance in the ant which results in paralyzing its muscles. 
C) A fly (male or female) injects a substance that sterilizes the ant. 
D) A fly (male or female) causes the ant's death by depriving it from its necessary resources and habitat. 
E) A fly (male or female) injects a substance that sterilizes the ant and paralyzes its muscles. 
A) A female fly lays an egg in the ant's soft tissues, and in the process of development, the resulting larvae kills the ant. 
B) A fly (male or female) injects a poisonous substance in the ant which results in paralyzing its muscles. 
C) A fly (male or female) injects a substance that sterilizes the ant. 
D) A fly (male or female) causes the ant's death by depriving it from its necessary resources and habitat. 
E) A fly (male or female) injects a substance that sterilizes the ant and paralyzes its muscles.

Question 16

A relationship between two species in which both species benefit is known as

Accepted Answer

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

Question 17

Thpyramiof energy is

Accepted Answer

A) a demonstration of the first law of thermodynamics. 
B) a result in the decline in the energy available as energy travels through the trophic levels. 
C) fundamentally different from the pyramid of biomass and the pyramid of numbers. 
D) just one of the manifestations of competition. 
E) the result of eating the correct foods. 
A) a demonstration of the first law of thermodynamics. 
B) a result in the decline in the energy available as energy travels through the trophic levels. 
C) fundamentally different from the pyramid of biomass and the pyramid of numbers. 
D) just one of the manifestations of competition. 
E) the result of eating the correct foods.

Question 18

Which of thfollowing is NOT truof ecosystems?

Accepted Answer

A) Although they may include many different species, many features of ecosystem structure and function are alike. 
B) Autotrophs secure energy and nutrients that are then used by heterotrophs. 
C) Energy cycles and mineral flows in an ecosystem. 
D) Many different niches are represented in most ecosystems. 
E) Ecosystems are characterized by relatively few trophic levels. 
A) Although they may include many different species, many features of ecosystem structure and function are alike. 
B) Autotrophs secure energy and nutrients that are then used by heterotrophs. 
C) Energy cycles and mineral flows in an ecosystem. 
D) Many different niches are represented in most ecosystems. 
E) Ecosystems are characterized by relatively few trophic levels.

Question 19

Which of thfollowing is truof predation?

Accepted Answer

A) A predator exerts selective pressure on its prey. 
B) A prey exerts selective pressure on its predator. 
C) In a typical predation case, the predator would not kill its prey. 
D) Feeding on carcasses is also an example of predation. 
E) Predator and prey exert selective pressure on one another. 
A) A predator exerts selective pressure on its prey. 
B) A prey exerts selective pressure on its predator. 
C) In a typical predation case, the predator would not kill its prey. 
D) Feeding on carcasses is also an example of predation. 
E) Predator and prey exert selective pressure on one another.

Question 20

Decomposers

Accepted Answer

A) are able to enter the food chain at any trophic level. 
B) are the most numerous organisms in an ecosystem. 
C) include bacteria and fungi. 
D) are all of these. 
E) are none of these. 
A) are able to enter the food chain at any trophic level. 
B) are the most numerous organisms in an ecosystem. 
C) include bacteria and fungi. 
D) are all of these. 
E) are none of these.

Exam 17: Communities and Ecosystems

Thsimplfoochain, grass >>> zebra >>> lion provides a gooexamplof a pyramiof

Which of thfollowing does NOT cyclthrough an ecosystem?

During thprocess of community succession,

Decomposers perfortheir recycling efforts on organisms

Carbon is storein what form?

Which of thfollowing organisms was introducein thUniteStates in order to control thpopulation of RIFAs?

Four of thfivanswers listebelow arheterotrophic.Select thEXCEPTION.

Thplants ananimals now present on acreagfrowhich thtrees werremoveten years earlier represent

Which of thfollowing statements about parasites is TRUE?

Endemic means a species

Competitivexclusion is baseupon thidea that

Which of thfollowing woulbmorlikely to affect thhabitat of an animal rather than its niche?

Primary carnivores are

In a natural community, thprimary consumers are

In which of thfollowing ways does thfly kill a firant?

A relationship between two species in which both species benefit is known as

Thpyramiof energy is

Which of thfollowing is NOT truof ecosystems?

Which of thfollowing is truof predation?

Decomposers

Invitation to Biology

Molecules of Life

Cell Structure

Energy and Metabolism

Capturing and Releasing Energy

Dna Structure and Function

Gene Expression and Control

How Cells Reproduce

Patterns of Inheritance

Biotechnology

Evidence of Evolution

Processes of Evolution

Early Life Forms and the Viruses

Plants and Fungi

Animal Evolutionunit

Population Ecology

The Biosphere and Human Eff Ects

Animal Tissues and Organs

How Animals Move

Circulation and Respiration

Immunity

Digestion and Excretion

Neural Control and the Senses

Endocrine Control

Reproduction and Development

Plant Form and Function

Plant Reproduction and Development

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