Question 1

In the simplified prairie food chain illustrated by the following pictures, the letter C represents a ____.

Accepted Answer

A)  tertiary consumer 
B)  secondary consumer 
C)  first trophic level 
D)  primary consumer 
E)  third trophic level 
A)  tertiary consumer 
B)  secondary consumer 
C)  first trophic level 
D)  primary consumer 
E)  third trophic level B

Question 2

Which is formed from the carbon shells of marine organisms?​

Accepted Answer

A)  ​limestone 
B)  ​phosphates 
C)  ​glaciers 
D)  ​rhyolite 
E)  gneiss​ 
A)  ​limestone 
B)  ​phosphates 
C)  ​glaciers 
D)  ​rhyolite 
E)  gneiss​ A

Question 3

Nitrification is the process of ____.​

Accepted Answer

A)  ​converting nitrogen gas to ammonia 
B)  ​converting nitrogen gas to nitrate 
C)  ​converting ammonium to nitrate 
D)  ​converting nitrate to ammonia 
E)  converting nitrate to nitrogen gas​ 
A)  ​converting nitrogen gas to ammonia 
B)  ​converting nitrogen gas to nitrate 
C)  ​converting ammonium to nitrate 
D)  ​converting nitrate to ammonia 
E)  converting nitrate to nitrogen gas​ C

Question 4

Considering the traditional view of ecological succession, which plant would most likely be a pioneer species in a primary succession event?​

Accepted Answer

A)  ​an oak tree that produces acorns dispersed by squirrels 
B)  ​a snapdragon flower pollinated by bees 
C)  ​a dandelion that produces seeds asexually, which are dispersed by the wind 
D)  ​a perennial species such as Douglas fir trees 
E)  a birch tree​ 
A)  ​an oak tree that produces acorns dispersed by squirrels 
B)  ​a snapdragon flower pollinated by bees 
C)  ​a dandelion that produces seeds asexually, which are dispersed by the wind 
D)  ​a perennial species such as Douglas fir trees 
E)  a birch tree​

Question 5

Examine the following figure of an Arctic food web. Match each term with the concept to which it best corresponds.   ​
-​primary consumer
A)A
B)B
C)C
D)D

Accepted Answer

The answer of Examine the following figure of an Arctic...

Question 6

​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​ 
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 7

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 an artificial 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 an artificial lake 
E)  ​on a glacier

Question 8

Match the trophic category to the correct description.
-spotted owls eating mice
A)producer
B)herbivore
C)carnivore
D)detritivore
E)decomposer

Accepted Answer

The answer of Match the trophic category to the correct...

Question 9

An example of a primary consumer is a(n) ____.​

Accepted Answer

A)  ​tiger 
B)  ​grasshopper 
C)  ​eagle 
D)  ​hyena 
E)  snake​ 
A)  ​tiger 
B)  ​grasshopper 
C)  ​eagle 
D)  ​hyena 
E)  snake​

Question 10

Match the trophic category to the correct description.
-primary consumers
A)producer
B)herbivore
C)carnivore
D)detritivore
E)decomposer

Accepted Answer

The answer of Match the trophic category to the correct...

Question 11

Match the type of species interaction to the correct description.
-A wolf and a fox live in the same community. The primary prey for both of them is rabbits.
A)competition
B)predation
C)mutualism
D)commensalism
E)parasitism

Accepted Answer

The answer of Match the type of species interaction to...

Question 12

The greatest concentration of nitrogen on Earth is found in ____.​

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 13

​Match the term or concept to the correct description.
-​the heat emitted by Earth's atmosphere warms its surface
A)​greenhouse effect
B)​carbon dioxide
C)​global climate change
D)​fossil fuels

Accepted Answer

The answer of ​Match the term or concept to the...

Question 14

Examine the following figure of the water cycle. Match each term with the concept to which it best corresponds.   ​
-​precipitation into ocean
A)A
B)B
C)C
D)D
E)E

Accepted Answer

The answer of Examine the following figure of the water...

Question 15

Examine the following figure of the water cycle. Match each term with the concept to which it best corresponds.   ​
-​evaporation from ocean
A)A
B)B
C)C
D)D
E)E

Accepted Answer

The answer of Examine the following figure of the water...

Question 16

In an Arctic food web, the organisms in these pictures represent the ____.

Accepted Answer

A)  second trophic level 
B)  secondary consumers 
C)  first trophic level 
D)  primary consumers 
E)  third trophic level 
A)  second trophic level 
B)  secondary consumers 
C)  first trophic level 
D)  primary consumers 
E)  third trophic level

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

The process that converts nitrate into nitrogen gas is known as ____.​

Accepted Answer

A)  ​denitrification 
B)  ​nitrification 
C)  ​nitrogen fixation 
D)  ​assimilation 
E)  assimilation and nitrification​ 
A)  ​denitrification 
B)  ​nitrification 
C)  ​nitrogen fixation 
D)  ​assimilation 
E)  assimilation and nitrification​

Question 19

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​

Question 20

Match the type of species interaction to the correct description.
-Lichens and mosses live on the branches of trees and are benefited by being up and out of the shade where they carry out more photosynthesis. The tree is unharmed by their presence.
A)competition
B)predation
C)mutualism
D)commensalism
E)parasitism

Accepted Answer

The answer of Match the type of species interaction to...

Exam 18: Communities and Ecosystems

In the simplified prairie food chain illustrated by the following pictures, the letter C represents a ____.

Which is formed from the carbon shells of marine organisms?​

Nitrification is the process of ____.​

Considering the traditional view of ecological succession, which plant would most likely be a pioneer species in a primary succession event?​

Examine the following figure of an Arctic food web. Match each term with the concept to which it best corresponds. ​ -​primary consumer A)A B)B C)C D)D

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

Secondary succession can occur ____.​

Match the trophic category to the correct description. -spotted owls eating mice A)producer B)herbivore C)carnivore D)detritivore E)decomposer

An example of a primary consumer is a(n) ____.​

Match the trophic category to the correct description. -primary consumers A)producer B)herbivore C)carnivore D)detritivore E)decomposer

Match the type of species interaction to the correct description. -A wolf and a fox live in the same community. The primary prey for both of them is rabbits. A)competition B)predation C)mutualism D)commensalism E)parasitism

The greatest concentration of nitrogen on Earth is found in ____.​

​Match the term or concept to the correct description. -​the heat emitted by Earth's atmosphere warms its surface A)​greenhouse effect B)​carbon dioxide C)​global climate change D)​fossil fuels

Examine the following figure of the water cycle. Match each term with the concept to which it best corresponds. ​ -​precipitation into ocean A)A B)B C)C D)D E)E

Examine the following figure of the water cycle. Match each term with the concept to which it best corresponds. ​ -​evaporation from ocean A)A B)B C)C D)D E)E

In an Arctic food web, the organisms in these pictures represent the ____.

​Competitive exclusion is based upon the idea that ____.

The process that converts nitrate into nitrogen gas is known as ____.​

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

Invitation to Biology

Molecules of Life

Cell Structure

Energy and Metabolism

Photosynthesis

Releasing Chemical Energy

Dna Structure and Function

Gene Expression and Control

How Cells Reproduce

Patterns of Inheritance

Biotechnology

Evidence of Evolution

Processes of Evolution

Prokaryotes, Protists, and 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

Animal Reproduction and Development

Plant Form and Function

Life Cycles of Flowering Plants

Filters

Which is formed from the carbon shells of marine organisms?

Nitrification is the process of ____.

Considering the traditional view of ecological succession, which plant would most likely be a pioneer species in a primary succession event?

Examine the following figure of an Arctic food web. Match each term with the concept to which it best corresponds. -primary consumer A)A B)B C)C D)D

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

Secondary succession can occur ____.

An example of a primary consumer is a(n) ____.

The greatest concentration of nitrogen on Earth is found in ____.

Match the term or concept to the correct description. -the heat emitted by Earth's atmosphere warms its surface A)greenhouse effect B)carbon dioxide C)global climate change D)fossil fuels

Examine the following figure of the water cycle. Match each term with the concept to which it best corresponds. -precipitation into ocean A)A B)B C)C D)D E)E

Examine the following figure of the water cycle. Match each term with the concept to which it best corresponds. -evaporation from ocean A)A B)B C)C D)D E)E

Competitive exclusion is based upon the idea that ____.

The process that converts nitrate into nitrogen gas is known as ____.

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