Question 1

The most species rich communities are found in

Accepted Answer

A)  tropical rain forests. 
B)  hot deserts. 
C)  eastern deciduous forests. 
D)  grasslands. 
E)  northern coniferous forests. 
A)  tropical rain forests. 
B)  hot deserts. 
C)  eastern deciduous forests. 
D)  grasslands. 
E)  northern coniferous forests.

Question 2

Classification.Answer the questions in reference to the five kinds of species interactions listed below.
a.competition
b.predation
c.mutualism
d.commensalism
-Legumes like beans and peas live in association with bacteria that can fix nitrogen.The nitrogen from the bacteria is shared with the legume and the bacteria receive carbohydrates from the plant.

Accepted Answer

The answer of Classification.Answer the questions in reference to the...

Question 3

The interaction in which one species benefits and the second species is neither harmed nor benefited is

Accepted Answer

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

Question 4

Detritivores are

Accepted Answer

A)  bacteria. 
B)  plants. 
C)  fungi. 
D)  animals. 
E)  more than one of these. 
A)  bacteria. 
B)  plants. 
C)  fungi. 
D)  animals. 
E)  more than one of these.

Question 5

Classification.Answer the questions in reference to the five kinds of species interactions listed below.
a.competition
b.predation
c.mutualism
d.commensalism
-A wolf and a fox live in the same community.The primary prey for both of them are rabbits.

Accepted Answer

The answer of Classification.Answer the questions in reference to the...

Question 6

What percent of Earth's total primary production is supplied by the ocean's primary producers?

Accepted Answer

A)  10 
B)  30 
C)  50 
D)  70 
E)  90 
A)  10 
B)  30 
C)  50 
D)  70 
E)  90

Question 7

Classification.Answer the questions in reference to the five trophic categories of an ecosystem listed below.
a.producer
b.herbivore
c.carnivore
d.detritivore
e.decomposer
-a zebra grazing on savanna grass

Accepted Answer

The answer of Classification.Answer the questions in reference to the...

Question 8

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 manmade 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 manmade lake. 
E)  on a glacier.

Question 9

The subdividing of some category of similar resources in a way that allows competing species to exist is

Accepted Answer

A)  competitive exclusion. 
B)  social parasitism. 
C)  predation. 
D)  mimicry. 
E)  resource partitioning. 
A)  competitive exclusion. 
B)  social parasitism. 
C)  predation. 
D)  mimicry. 
E)  resource partitioning.

Question 10

A one-way relationship in which one species benefits and directly hurts the other is called

Accepted Answer

A)  commensalism. 
B)  competition. 
C)  parasitism. 
D)  predation. 
E)  more than one of these. 
A)  commensalism. 
B)  competition. 
C)  parasitism. 
D)  predation. 
E)  more than one of these.

Question 11

Four of the five answers listed below are examples of mutualism.Select the EXCEPTION.

Accepted Answer

A)  plants and pollinators 
B)  plants and seed dispersal by fruit-eating animals 
C)  mycorrhizae 
D)  phorid flies and red fire ants 
E)  anemone fish and anemones 
A)  plants and pollinators 
B)  plants and seed dispersal by fruit-eating animals 
C)  mycorrhizae 
D)  phorid flies and red fire ants 
E)  anemone fish and anemones

Question 12

Which of the following is TRUE of exotic species?

Accepted Answer

A)  In general, exotic species do not have predators in their new location. 
B)  An exotic species is a species that evolved in one region but has been introduced to and become established in another. 
C)  An exotic species is often untroubled by competitors. 
D)  An exotic species is often untroubled by parasites and diseases. 
E)  All of these are true. 
A)  In general, exotic species do not have predators in their new location. 
B)  An exotic species is a species that evolved in one region but has been introduced to and become established in another. 
C)  An exotic species is often untroubled by competitors. 
D)  An exotic species is often untroubled by parasites and diseases. 
E)  All of these are true.

Question 13

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 a biosphere. 
E)  the species diversity in a niche. 
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 a biosphere. 
E)  the species diversity in a niche.

Question 14

Carbon dioxide is a pollutant because it

Accepted Answer

A)  is absorbed by the ocean and converted into insoluble carbonates. 
B)  is utilized when fossil fuel is burned. 
C)  is a waste product of photosynthesis. 
D)  cannot be recycled at a rate equal to its present production. 
E)  is replacing oxygen as the most abundant gas in the air. 
A)  is absorbed by the ocean and converted into insoluble carbonates. 
B)  is utilized when fossil fuel is burned. 
C)  is a waste product of photosynthesis. 
D)  cannot be recycled at a rate equal to its present production. 
E)  is replacing oxygen as the most abundant gas in the air.

Question 15

Which of the following 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.

Question 16

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

Question 17

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. 
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 18

Classification.Answer the questions in reference to the five trophic categories of an ecosystem listed below.
a.producer
b.herbivore
c.carnivore
d.detritivore
e.decomposer
-the end point of all trophic levels- fungi are most common

Accepted Answer

The answer of Classification.Answer the questions in reference to the...

Question 19

MATCHING
The figure below refers to a food chain in a tallgrass prairie.Examine it and answer the questions by matching each letter with the number with which it best corresponds.
  
-third-level consumer

Accepted Answer

The answer of MATCHING
The figure below refers to a food...

Question 20

About half of all Americans rely on ___ for their drinking water.

Accepted Answer

A)  glaciers 
B)  sea water 
C)  stream water 
D)  aquifers 
E)  lake water 
A)  glaciers 
B)  sea water 
C)  stream water 
D)  aquifers 
E)  lake water

Exam 17: Communities and Ecosystems

The most species rich communities are found in

The interaction in which one species benefits and the second species is neither harmed nor benefited is

Detritivores are

Classification.Answer the questions in reference to the five kinds of species interactions listed below. a.competition b.predation c.mutualism d.commensalism -A wolf and a fox live in the same community.The primary prey for both of them are rabbits.

What percent of Earth's total primary production is supplied by the ocean's primary producers?

Classification.Answer the questions in reference to the five trophic categories of an ecosystem listed below. a.producer b.herbivore c.carnivore d.detritivore e.decomposer -a zebra grazing on savanna grass

Secondary succession can occur

The subdividing of some category of similar resources in a way that allows competing species to exist is

A one-way relationship in which one species benefits and directly hurts the other is called

Four of the five answers listed below are examples of mutualism.Select the EXCEPTION.

Which of the following is TRUE of exotic species?

Species richness and the relative abundance of each species determine

Carbon dioxide is a pollutant because it

Which of the following statements is FALSE?

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

Competitive exclusion is based upon the idea that

Classification.Answer the questions in reference to the five trophic categories of an ecosystem listed below. a.producer b.herbivore c.carnivore d.detritivore e.decomposer -the end point of all trophic levels- fungi are most common

MATCHING The figure below refers to a food chain in a tallgrass prairie.Examine it and answer the questions by matching each letter with the number with which it best corresponds. -third-level consumer

About half of all Americans rely on ___ for their drinking water.

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 Evolution

Population Ecology

The Biosphere and Human Effects

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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