Question 1

What typof relationship do fruit flies havwith humans?

Accepted Answer

A) obligate 
B) mutualistic 
C) parasitic 
D) commensal 
E) saprobic 
A) obligate 
B) mutualistic 
C) parasitic 
D) commensal 
E) saprobic

Question 2

Most of thcarbon now present in thearth's atmospherwill eventually enup in which two holding stations?

Accepted Answer

A) plants and animals 
B) plants and decomposers 
C) plants and soils 
D) plants and oceans 
E) plants and fossil fuels 
A) plants and animals 
B) plants and decomposers 
C) plants and soils 
D) plants and oceans 
E) plants and fossil fuels

Question 3

Four of thfivanswers listebelow arevents that leato secondary succession.Select thEXCEPTION.

Accepted Answer

A) opening the canopy in a tropical rain forest 
B) abandoning a cotton field 
C) retreat of a glacier in Alaska 
D) the finish of a fire 
E) growth of weeds in a lawn that is not mowed 
A) opening the canopy in a tropical rain forest 
B) abandoning a cotton field 
C) retreat of a glacier in Alaska 
D) the finish of a fire 
E) growth of weeds in a lawn that is not mowed

Question 4

Thgreatest concentration of nitrogen on earth is founin

Accepted Answer

A) living organisms, including bacteria. 
B) the atmosphere. 
C) soil minerals. 
D) fossil fuels. 
E) oceans. 
A) living organisms, including bacteria. 
B) the atmosphere. 
C) soil minerals. 
D) fossil fuels. 
E) oceans.

Question 5

Four of thfivanswers listebelow arexamples of defenscoloration.Select thEXCEPTION.

Accepted Answer

A) industrial melanism 
B) camouflage 
C) albinism 
D) warning coloration 
E) mimicry 
A) industrial melanism 
B) camouflage 
C) albinism 
D) warning coloration 
E) mimicry

Question 6

Thphosphorus moving into foowebs is originally obtainefrom

Accepted Answer

A) soil and water. 
B) rocks. 
C) atmosphere. 
D) soil, water, and rocks. 
E) soil, water, rocks, and atmosphere. 
A) soil and water. 
B) rocks. 
C) atmosphere. 
D) soil, water, and rocks. 
E) soil, water, rocks, and atmosphere.

Question 7

Which of thfollowing is NOT dependent on thothers as a foosupply?

Accepted Answer

A) carnivores 
B) herbivores 
C) producers 
D) detritivores 
E) decomposers 
A) carnivores 
B) herbivores 
C) producers 
D) detritivores 
E) decomposers

Question 8

Ladybugs areffectivnatural control agents against pest insects, but as gardeners soon finout, they do not reducpest populations to zero because

Accepted Answer

A) they cannot fly to find pests on nearby plants. 
B) of their very selective feeding habits. 
C) to do so would jeopardize their own existence. 
D) they do not live long enough. 
E) their reproductive capacity is nonexistent. 
A) they cannot fly to find pests on nearby plants. 
B) of their very selective feeding habits. 
C) to do so would jeopardize their own existence. 
D) they do not live long enough. 
E) their reproductive capacity is nonexistent.

Question 9

Humans hunt thblack rhinoceros, which is rapidly approaching extinction as a result of this predation.What accounts for thabsencof stablcoexistencbetween thestwo species?

Accepted Answer

A) Predator and prey have not coevolved. 
B) Human predation is not necessarily density-dependent. 
C) The prey reproductive rate is greater than that of the predator. 
D) Predator and prey have not coevolved, and human predation is not necessarily density-dependent. 
E) Predator and prey have not coevolved, human predation is not necessarily density-dependent, and the prey reproductive rate is greater than that of the predator. 
A) Predator and prey have not coevolved. 
B) Human predation is not necessarily density-dependent. 
C) The prey reproductive rate is greater than that of the predator. 
D) Predator and prey have not coevolved, and human predation is not necessarily density-dependent. 
E) Predator and prey have not coevolved, human predation is not necessarily density-dependent, and the prey reproductive rate is greater than that of the predator.

Question 10

Air pollution

Accepted Answer

A) reduces visibility. 
B) corrodes buildings. 
C) causes various human diseases. 
D) damages plants. 
E) does all of these. 
A) reduces visibility. 
B) corrodes buildings. 
C) causes various human diseases. 
D) damages plants. 
E) does all of these.

Question 11

Secondary succession can occur

Accepted Answer

A) after a fire. 
B) on a new sand dune. 
C) on bare rock. 
D) immediately after the formation of a man made lake. 
E) on a glacier. 
A) after a fire. 
B) on a new sand dune. 
C) on bare rock. 
D) immediately after the formation of a man made lake. 
E) on a glacier.

Question 12

Threlationship between thyucca plant anthyucca moth that pollinates it is best describeas

Accepted Answer

A) commensalism. 
B) parasitism. 
C) predation. 
D) mutualism. 
E) all of these. 
A) commensalism. 
B) parasitism. 
C) predation. 
D) mutualism. 
E) all of these.

Question 13

At thbottoor basof a pyramiof energy arthe

Accepted Answer

A) primary consumers. 
B) primary producers. 
C) secondary consumers. 
D) secondary producers. 
E) tertiary consumers. 
A) primary consumers. 
B) primary producers. 
C) secondary consumers. 
D) secondary producers. 
E) tertiary consumers.

Question 14

Without human intervention, cockroaches will overrun a kitchen until

Accepted Answer

A) the carrying capacity is reached. 
B) predators attack. 
C) parasites invade the roaches' bodies. 
D) density-independent factors such as cold intervene. 
E) all of these. 
A) the carrying capacity is reached. 
B) predators attack. 
C) parasites invade the roaches' bodies. 
D) density-independent factors such as cold intervene. 
E) all of these.

Question 15

A one-way relationship in which onspecies benefits andirectly hurts thother is called

Accepted Answer

A) commensalism. 
B) competitive exclusion. 
C) parasitism. 
D) obligate mutualism. 
E) neutral relationship. 
A) commensalism. 
B) competitive exclusion. 
C) parasitism. 
D) obligate mutualism. 
E) neutral relationship.

Question 16

Populations arhelin check by

Accepted Answer

A) resource partition. 
B) predation. 
C) social parasitism. 
D) competition. 
E) all of these. 
A) resource partition. 
B) predation. 
C) social parasitism. 
D) competition. 
E) all of these.

Question 17

A keystonspecies is

Accepted Answer

A) a single dominant species. 
B) in control of the prey species. 
C) exemplified by the sea star. 
D) a single dominant species and is exemplified by the sea star. 
E) a single dominant species, exemplified by the sea star, and in control of the prey species. 
A) a single dominant species. 
B) in control of the prey species. 
C) exemplified by the sea star. 
D) a single dominant species and is exemplified by the sea star. 
E) a single dominant species, exemplified by the sea star, and in control of the prey species.

Question 18

Structurof communities may baffecteby

Accepted Answer

A) temperatures. 
B) sunlight intensity. 
C) humidity. 
D) condition of the soil. 
E) all of these. 
A) temperatures. 
B) sunlight intensity. 
C) humidity. 
D) condition of the soil. 
E) all of these.

Question 19

Thinteraction between two species in which both species may bharmeis 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 20

Which of thfollowing statements is FALSE?

Accepted Answer

A) Heat loss represents a one-way loss of energy from an ecosystem. 
B) Organisms in the food chain can use all the energy contained in the food that they eat. 
C) In some ecosystems, the majority of the energy stored in plants does not become available until the plants die. 
D) Heat and energy are lost by each organism in the ecosystem. 
E) The two food webs are classified as grazing and detrital. 
A) Heat loss represents a one-way loss of energy from an ecosystem. 
B) Organisms in the food chain can use all the energy contained in the food that they eat. 
C) In some ecosystems, the majority of the energy stored in plants does not become available until the plants die. 
D) Heat and energy are lost by each organism in the ecosystem. 
E) The two food webs are classified as grazing and detrital.

Exam 17: Communities and Ecosystems

What typof relationship do fruit flies havwith humans?

Most of thcarbon now present in thearth's atmospherwill eventually enup in which two holding stations?

Four of thfivanswers listebelow arevents that leato secondary succession.Select thEXCEPTION.

Thgreatest concentration of nitrogen on earth is founin

Four of thfivanswers listebelow arexamples of defenscoloration.Select thEXCEPTION.

Thphosphorus moving into foowebs is originally obtainefrom

Which of thfollowing is NOT dependent on thothers as a foosupply?

Ladybugs areffectivnatural control agents against pest insects, but as gardeners soon finout, they do not reducpest populations to zero because

Humans hunt thblack rhinoceros, which is rapidly approaching extinction as a result of this predation.What accounts for thabsencof stablcoexistencbetween thestwo species?

Air pollution

Secondary succession can occur

Threlationship between thyucca plant anthyucca moth that pollinates it is best describeas

At thbottoor basof a pyramiof energy arthe

Without human intervention, cockroaches will overrun a kitchen until

A one-way relationship in which onspecies benefits andirectly hurts thother is called

Populations arhelin check by

A keystonspecies is

Structurof communities may baffecteby

Thinteraction between two species in which both species may bharmeis known as

Which of thfollowing statements is FALSE?

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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