Question 1

The warming action on Earth's atmosphere is referred to as ____.

Accepted Answer

A)  respiration accumulation
B)  the greenhouse effect
C)  the smog problem
D)  the blanket phenomenon
E)  ozone depletion

Question 2

An energy pyramid is ____.

Accepted Answer

A)  a demonstration of the first law of thermodynamics
B)  a representation of the decline in available energy as it travels through the trophic levels
C)  fundamentally different from the pyramid of biomass and the pyramid of numbers
D)  a demonstration of the interactions between species in a community
E)  a representation of an ecosystem's diversity

Question 3

Species richness and the relative abundance of each species determine ____.

Accepted Answer

A)  the species composition of an ecosystem
B)  the species diversity of a community
C)  the species composition of a population
D)  the species diversity of the biosphere
E)  the species diversity in a niche

Question 4

The interaction between two species in which both species may be harmed is known as ____.

Accepted Answer

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

Question 5

Most of the Earth's phosphorous is in the form of ____.

Accepted Answer

A)  phosphoric acid
B)  elemental phosphorous
C)  phosphate
D)  phosphorous cations
E)  carbonate

Question 6

The cowbird chick with its foster parent exemplifies an example of ____.

Accepted Answer

A)  commensalism
B)  brood parasitism
C)  competition
D)  mutualism
E)  parasitoidism

Question 7

Most of the water vapor in the Earth's atmosphere comes from evaporation from ____.

Accepted Answer

A)  lakes
B)  rivers
C)  land
D)  oceans
E)  plants

Question 8

Many introduced species have deleterious effects on communities and ecosystems because ____.

Accepted Answer

A)  coevolved parasites and pathogens are absent
B)  the introduced species are long-lived
C)  predators prefer the introduced species, resulting in proliferation of native prey species
D)  the community from which they came lost an important predator, competitor, or parasite
E)  human beings do not know how to appreciate them

Question 9

An interaction that benefits both species is ____.

Accepted Answer

A)  a neutral relationship
B)  commensalism
C)  competition
D)  mutualism
E)  parasitism

Question 10

Examine the figure below of the water cycle.Match each term with the concept to which it best corresponds. 
-dissolved carbon in the ocean

Accepted Answer

A)  A
B)  B
C)  C
D)  D
E)  E

Question 11

Approximately ____ of Earth's total primary production is supplied by the ocean's primary producers.

Accepted Answer

A)  one fourth
B)  one third
C)  half
D)  three fourths
E)  all

Question 12

Which is an example of an event that would give rise to primary succession?

Accepted Answer

A)  a dense landslide of mountain rocks covering an entire valley
B)  a fire that burns all surface vegetation
C)  an abandoned agricultural field
D)  a lake that dries up, killing all aquatic plants
E)  a forest that is logged

Question 13

Examine the figure below of the water cycle.Match each term with the concept to which it best corresponds. 
-evaporation from ocean

Accepted Answer

A)  A
B)  B
C)  C
D)  D
E)  E

Question 14

Light energy from the sun is captured by photosynthesis as ____.

Accepted Answer

A)  heat energy in chemical bonds
B)  energy in chemical bonds
C)  chemical energy lost to the environment
D)  kinetic energy in chemical bonds
E)  conserved energy

Question 15

The niche of an earthworm in an ecosystem is as a(n) ____.

Accepted Answer

A)  producer
B)  consumer
C)  detritivore
D)  decomposer
E)  parasite

Question 16

Which represents an early stage in primary succession?

Accepted Answer

A)  pine tree growth
B)  mosses and lichen on bare rock
C)  weedy annual plants in an open field
D)  climax species in succession
E)  fields of food crops

Question 17

Match the term or concept to the correct description.
-climate-related effects due to the increase in greenhouse gases

Accepted Answer

A)  greenhouse effect
B)  carbon dioxide
C)  global climate change
D)  fossil fuels

Question 18

In this figure,what do the yellow arrows marked #1 and #2 indicate?

Accepted Answer

A)  light energy
B)  heat energy
C)  greenhouse gases
D)  atmospheric gases
E)  carbon dioxide

Question 19

Competitive exclusion is based upon the idea 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

Question 20

Examine the figure below of an Arctic food web.Match each term with the concept to which it best corresponds. 
-primary producer

Accepted Answer

A)  A
B)  B
C)  C
D)  D

Exam 17: Communities And Ecosystems

The warming action on Earth's atmosphere is referred to as ____.

Correct AnswerverifiedShow Answer

Most of the Earth's phosphorous is in the form of ____.

Correct AnswerverifiedShow Answer

Examine the figure below of the water cycle.Match each term with the concept to which it best corresponds. -dissolved carbon in the ocean

Correct AnswerverifiedShow Answer

Species richness and the relative abundance of each species determine ____.

Correct AnswerverifiedShow Answer

Which is an example of an event that would give rise to primary succession?

Correct AnswerverifiedShow Answer

In this figure,what do the yellow arrows marked #1 and #2 indicate?

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Examine the figure below of an Arctic food web.Match each term with the concept to which it best corresponds. -primary producer

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An interaction that benefits both species is ____.

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The cowbird chick with its foster parent exemplifies an example of ____.

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An energy pyramid is ____.

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Many introduced species have deleterious effects on communities and ecosystems because ____.

Correct AnswerverifiedShow Answer

The interaction between two species in which both species may be harmed is known as ____.

Correct AnswerverifiedShow Answer

Which represents an early stage in primary succession?

Correct AnswerverifiedShow Answer

The niche of an earthworm in an ecosystem is as a(n) ____.

Correct AnswerverifiedShow Answer

Light energy from the sun is captured by photosynthesis as ____.

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Match the term or concept to the correct description. -climate-related effects due to the increase in greenhouse gases

Correct AnswerverifiedShow Answer

Competitive exclusion is based upon the idea that ____.

Correct AnswerverifiedShow Answer

Most of the water vapor in the Earth's atmosphere comes from evaporation from ____.

Correct AnswerverifiedShow Answer

Approximately ____ of Earth's total primary production is supplied by the ocean's primary producers.

Correct AnswerverifiedShow Answer

Examine the figure below of the water cycle.Match each term with the concept to which it best corresponds. -evaporation from ocean

Correct AnswerverifiedShow Answer

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