Question 1

In computing an individual's ecological footprint,which of the following would NOT be included?

Accepted Answer

A)  energy demand 
B)  food use 
C)  goods and services use 
D)  education level 
A)  energy demand 
B)  food use 
C)  goods and services use 
D)  education level

Question 2

Which density-dependent process contributed most significantly to the recovery of the North American monarch butterfly population after the severe winter losses of 2002?

Accepted Answer

A)  Unusually mild weather in the eastern United States greatly improved juvenile butterfly survival. 
B)  Butterfly predators starved when the monarch population dropped,and by the time it had recovered,Monarch population numbers were back up. 
C)  Egg production is inversely proportional to density;the surviving monarchs had ample resources and experienced maximal reproduction. 
D)  With fewer returning adults,there was less competition for food among the young caterpillars,and their survival rate was unusually high. 
A)  Unusually mild weather in the eastern United States greatly improved juvenile butterfly survival. 
B)  Butterfly predators starved when the monarch population dropped,and by the time it had recovered,Monarch population numbers were back up. 
C)  Egg production is inversely proportional to density;the surviving monarchs had ample resources and experienced maximal reproduction. 
D)  With fewer returning adults,there was less competition for food among the young caterpillars,and their survival rate was unusually high.

Question 3

A relationship between birth rate and population density exists,for example,in the plantain weed Plantago major;as densities increase,birth rates ________.

Accepted Answer

The answer of A relationship between birth rate and population...

Question 4

When an isolated population reaches its carrying capacity

Accepted Answer

A) the birth rate > the death rate. B) the birth rate = the death rate. C) the birth rate < the death rate. D) It is not possible to generalize these values. A) the birth rate > the death rate. B) the birth rate = the death rate. C) the birth rate < the death rate. D) It is not possible to generalize these values.

Question 5

The rates of population growth and emigration are directly proportional.

Accepted Answer

A) True 
 B)False

Question 6

Food shortages and communicable disease are examples of factors that can increase a population's death rate while simultaneously ________ its growth rate.

Accepted Answer

The answer of Food shortages and communicable disease are examples...

Question 7

Factors such as the age of reproductive maturity,maximum litter size,and the gestation period combine to produce an upper limit for the growth rate of any population;under what circumstances is that rate most likely to be seen?

Accepted Answer

A)  when the population approaches a density that's 50 percent of its carrying capacity 
B)  when there are very few individuals in the population,for example,the initial colonists in a new habitat or the first few individuals of an introduced species 
C)  when the population reaches its carrying capacity 
D)  when the survivors following a population crash begin to reproduce 
A)  when the population approaches a density that's 50 percent of its carrying capacity 
B)  when there are very few individuals in the population,for example,the initial colonists in a new habitat or the first few individuals of an introduced species 
C)  when the population reaches its carrying capacity 
D)  when the survivors following a population crash begin to reproduce

Question 8

Which of the following has the highest population density?

Accepted Answer

A)  1 grasshopper living in an area of 10 square meters 
B)  100 rabbits living in an area of 10,000 square meters 
C)  200 sparrows living in an area of 20,000 square meters 
D)  1,500 oysters living in an area of 1,500 square meters 
A)  1 grasshopper living in an area of 10 square meters 
B)  100 rabbits living in an area of 10,000 square meters 
C)  200 sparrows living in an area of 20,000 square meters 
D)  1,500 oysters living in an area of 1,500 square meters

Question 9

The population explosion that occurred shortly after the Opuntia cactus was introduced to Australia is an example of

Accepted Answer

A)  exponential growth. 
B)  emigration. 
C)  reduced population density. 
D)  a native species outcompeting an introduced species. 
A)  exponential growth. 
B)  emigration. 
C)  reduced population density. 
D)  a native species outcompeting an introduced species.

Question 10

One of the greatest concerns to ecologists today is the possibility that the current rate of human population growth will soon produce a human population that exceeds the ________ of our environment.

Accepted Answer

The answer of One of the greatest concerns to ecologists...

Exam 21: Growth of Populations

In computing an individual's ecological footprint,which of the following would NOT be included?

Which density-dependent process contributed most significantly to the recovery of the North American monarch butterfly population after the severe winter losses of 2002?

A relationship between birth rate and population density exists,for example,in the plantain weed Plantago major;as densities increase,birth rates ________.

When an isolated population reaches its carrying capacity

The rates of population growth and emigration are directly proportional.

Food shortages and communicable disease are examples of factors that can increase a population's death rate while simultaneously ________ its growth rate.

Factors such as the age of reproductive maturity,maximum litter size,and the gestation period combine to produce an upper limit for the growth rate of any population;under what circumstances is that rate most likely to be seen?

Which of the following has the highest population density?

The population explosion that occurred shortly after the Opuntia cactus was introduced to Australia is an example of

One of the greatest concerns to ecologists today is the possibility that the current rate of human population growth will soon produce a human population that exceeds the ________ of our environment.

The Nature of Science and the Characteristics of Life

The Chemistry of Life

Cell Structure and Internal Compartments

Cell Membranes, Transport, and Communication

Energy, Metabolism, and Enzymes

Photosynthesis and Cellular Respiration

Cell Division

Cancer and Human Health

Patterns of Inheritance

Chromosomes and Human Genetics

DNA and Genes

From Gene to Protein

DNA Technology

How Evolution Works

The Origin of Species

The Evolution of Biodiversity

Biological Diversity, Bacteria, and Archaea

Protista, Plantae, and Fungi

Animalia

The Biosphere

Animal Behavior

Ecological Communities

Ecosystems

Global Change

Internal Organization and Homeostasis

Nutrition and Digestion

Circulation and Gas Exchange

Animal Hormones

Nervous and Sensory Systems

Skeletons,Muscles,and Movement

The Immune System

Reproduction and Development

Plant Structure, Nutrition, and Transport

Plant Growth and Reproduction

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