Question 1

Mature communities generally exhibit the greatest species diversity.

Accepted Answer

A) True 
 B)False  True

Question 2

Match the following.
-a blow fly feeding on a corpse

Accepted Answer

A) herbivore 
B) decomposer, carnivore 
C) omnivore 
D) producer 
A) herbivore 
B) decomposer, carnivore 
C) omnivore 
D) producer B

Question 3

Trees undergoing photosynthesis in a mature forest can best be described as

Accepted Answer

A)  primary consumers. 
B)  secondary consumers. 
C)  chemoautotrophs. 
D)  primary producers. 
E)  heterotrophs. 
A)  primary consumers. 
B)  secondary consumers. 
C)  chemoautotrophs. 
D)  primary producers. 
E)  heterotrophs. D

Question 4

Under natural conditions, the amount of nitrogen gas returned to the atmosphere by denitrification approximately equals

Accepted Answer

A)  phosphorus cycling. 
B)  evaporation. 
C)  nitrogen fixation. 
D)  sublimation. 
E)  photosynthesis. 
A)  phosphorus cycling. 
B)  evaporation. 
C)  nitrogen fixation. 
D)  sublimation. 
E)  photosynthesis.

Question 5

During photosynthesis, high-energy carbohydrates are produced at the end of

Accepted Answer

A)  light absorption by chlorophyll. 
B)  cellular respiration. 
C)  the light reactions. 
D)  the Calvin cycle. 
E)  the electron transport pathway. 
A)  light absorption by chlorophyll. 
B)  cellular respiration. 
C)  the light reactions. 
D)  the Calvin cycle. 
E)  the electron transport pathway.

Question 6

Match each term to its definition.
-area in which the species is distributed

Accepted Answer

A) habitat 
B) ecosystem 
C) geographic range 
D) niche 
E) community 
A) habitat 
B) ecosystem 
C) geographic range 
D) niche 
E) community

Question 7

A species' biotic potential is intrinsically determined by all of the following EXCEPT which one?

Accepted Answer

A)  the number of members of reproductive age 
B)  the number of offspring produced by each reproducing member 
C)  the time span before offspring reach reproductive maturity 
D)  the ratio of males to females 
E)  the presence of competing species in the same habitat 
A)  the number of members of reproductive age 
B)  the number of offspring produced by each reproducing member 
C)  the time span before offspring reach reproductive maturity 
D)  the ratio of males to females 
E)  the presence of competing species in the same habitat

Question 8

Which statement describes the expected population growth in the next 50 years?

Accepted Answer

A)  The population growth will be relatively equal throughout the world. 
B)  The greatest population growth is likely to occur in the more industrialized countries, including the United States and Europe. 
C)  Most countries worldwide will achieve zero population growth in the next 10 years. 
D)  The greatest population growth is likely to occur in the least industrialized countries. 
E)  There will be a net decline of population, with the United States and other industrialized countries contributing most to the population decline. 
A)  The population growth will be relatively equal throughout the world. 
B)  The greatest population growth is likely to occur in the more industrialized countries, including the United States and Europe. 
C)  Most countries worldwide will achieve zero population growth in the next 10 years. 
D)  The greatest population growth is likely to occur in the least industrialized countries. 
E)  There will be a net decline of population, with the United States and other industrialized countries contributing most to the population decline.

Question 9

Which one of the following is TRUE regarding an ecological pyramid?

Accepted Answer

A)  An ecological pyramid can depict either the total amount of energy stored at each level of an ecosystem or the total biomass at each level. 
B)  The population of producers depends largely on the populations of consumers below it. 
C)  The amount of energy represented by tertiary consumers is greater than the amount of energy represented by primary consumers. 
D)  Animals such as wolves and eagles would be located at the base of the pyramid. 
E)  The amount of energy represented by producers is equivalent to the amount of energy represented by the secondary consumers. 
A)  An ecological pyramid can depict either the total amount of energy stored at each level of an ecosystem or the total biomass at each level. 
B)  The population of producers depends largely on the populations of consumers below it. 
C)  The amount of energy represented by tertiary consumers is greater than the amount of energy represented by primary consumers. 
D)  Animals such as wolves and eagles would be located at the base of the pyramid. 
E)  The amount of energy represented by producers is equivalent to the amount of energy represented by the secondary consumers.

Question 10

The introduction of invasive species may increase the environmental resistance for a native species.

Accepted Answer

A) True 
 B)False

Question 11

The number of offspring produced by each reproducing member of a species, the ratio of males to females, and the time it takes offspring to become reproductively mature are determinants of the ________ of a population.

Accepted Answer

The answer of The number of offspring produced by each...

Question 12

A species moving into a new habitat will be able to adapt only if there is genetic change in the population.

Accepted Answer

A) True 
 B)False

Question 13

The figure above shows an ecological pyramid. Which level of this pyramid contains the primary producers?

Accepted Answer

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

Question 14

Regular, consistent intervention, such as some modern logging practices, may create which type of stable community?

Accepted Answer

A)  immature 
B)  evergreen 
C)  forest 
D)  recovered 
E)  varied 
A)  immature 
B)  evergreen 
C)  forest 
D)  recovered 
E)  varied

Question 15

Match the following.
-a plant producing high-energy carbohydrates from carbon dioxide and water, using energy from the sun

Accepted Answer

A) herbivore 
B) decomposer, carnivore 
C) omnivore 
D) producer 
A) herbivore 
B) decomposer, carnivore 
C) omnivore 
D) producer

Question 16

Match the following.
-a cow feeding on grass in a field

Accepted Answer

A) herbivore 
B) decomposer, carnivore 
C) omnivore 
D) producer 
A) herbivore 
B) decomposer, carnivore 
C) omnivore 
D) producer

Question 17

Herbivores may also be referred to as

Accepted Answer

A)  producers. 
B)  quaternary consumers. 
C)  primary consumers. 
D)  carbohydrate consumers. 
E)  autotrophs. 
A)  producers. 
B)  quaternary consumers. 
C)  primary consumers. 
D)  carbohydrate consumers. 
E)  autotrophs.

Question 18

If the population age structure of a country resembles a pyramid, with the pre-reproductive age group the largest proportion of the population, and the post-reproductive age group the smallest, this country can most likely be classified as one of the

Accepted Answer

A)  stable populations. 
B)  least developed countries. 
C)  most developed countries. 
D)  steady-state populations. 
E)  expanding populations. 
A)  stable populations. 
B)  least developed countries. 
C)  most developed countries. 
D)  steady-state populations. 
E)  expanding populations.

Question 19

The type of location where a species lives is its ________.

Accepted Answer

The answer of The type of location where a species...

Question 20

The process of converting nitrogen gas to ammonium is called

Accepted Answer

A)  biogeochemical processing. 
B)  sublimation. 
C)  nitrogen fixation. 
D)  evaporation. 
E)  nitrification. 
A)  biogeochemical processing. 
B)  sublimation. 
C)  nitrogen fixation. 
D)  evaporation. 
E)  nitrification.

Exam 23: Ecosystems and Populations

Mature communities generally exhibit the greatest species diversity.

Match the following. -a blow fly feeding on a corpse

Trees undergoing photosynthesis in a mature forest can best be described as

Under natural conditions, the amount of nitrogen gas returned to the atmosphere by denitrification approximately equals

During photosynthesis, high-energy carbohydrates are produced at the end of

Match each term to its definition. -area in which the species is distributed

A species' biotic potential is intrinsically determined by all of the following EXCEPT which one?

Which statement describes the expected population growth in the next 50 years?

Which one of the following is TRUE regarding an ecological pyramid?

The introduction of invasive species may increase the environmental resistance for a native species.

The number of offspring produced by each reproducing member of a species, the ratio of males to females, and the time it takes offspring to become reproductively mature are determinants of the ________ of a population.

A species moving into a new habitat will be able to adapt only if there is genetic change in the population.

The figure above shows an ecological pyramid. Which level of this pyramid contains the primary producers?

Regular, consistent intervention, such as some modern logging practices, may create which type of stable community?

Match the following. -a plant producing high-energy carbohydrates from carbon dioxide and water, using energy from the sun

Match the following. -a cow feeding on grass in a field

Herbivores may also be referred to as

If the population age structure of a country resembles a pyramid, with the pre-reproductive age group the largest proportion of the population, and the post-reproductive age group the smallest, this country can most likely be classified as one of the

The type of location where a species lives is its ________.

The process of converting nitrogen gas to ammonium is called

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