Question 1

The principle of _______ explains why growth and reproduction rates are usually _______ correlated.

Accepted Answer

A)  homeostasis;positively 
B)  homeostasis;negatively 
C)  allocation;positively 
D)  allocation;negatively 
E)  the carrying capacity;positively 
A)  homeostasis;positively 
B)  homeostasis;negatively 
C)  allocation;positively 
D)  allocation;negatively 
E)  the carrying capacity;positively

Question 2

If the survivorship at the start of October is 0.4,what is the mortality rate during the month of September?

Accepted Answer

A)  0.15 
B)  0.20 
C)  0.30 
D)  0.50 
E)  0.80 
A)  0.15 
B)  0.20 
C)  0.30 
D)  0.50 
E)  0.80

Question 3

Suppose there are three geographically separated populations of moose in Maine.Population A has a population size of 870 and a per capita growth rate of -0.06 per month.Population B has a population size of 456 and a per capita growth rate of 0.02 per month.Population C has a population size of 1,426 and a per capita growth rate of 0.12 per month.Assuming that the per capita growth rates remain constant,which population is at risk of extinction?

Accepted Answer

A)  Population A only 
B)  Population B only 
C)  Population C only 
D)  Both populations A and B 
E)  Both populations B and C 
A)  Population A only 
B)  Population B only 
C)  Population C only 
D)  Both populations A and B 
E)  Both populations B and C

Question 4

A BIDE model of population growth is more applicable than a BD model for a population

Accepted Answer

A)  that follows multiplicative growth. 
B)  that is shrinking. 
C)  that is part of a metapopulation. 
D)  in which reproduction occurs at regular intervals. 
E)  in which reproduction occurs at irregular intervals. 
A)  that follows multiplicative growth. 
B)  that is shrinking. 
C)  that is part of a metapopulation. 
D)  in which reproduction occurs at regular intervals. 
E)  in which reproduction occurs at irregular intervals.

Question 5

The primary feeding source of black-legged tick larvae is

Accepted Answer

A)  deer. 
B)  rodents. 
C)  birds. 
D)  acorns. 
E)  adult ticks. 
A)  deer. 
B)  rodents. 
C)  birds. 
D)  acorns. 
E)  adult ticks.

Question 6

Which item does not constitute a resource for a rodent?

Accepted Answer

A)  Calcium for bone growth 
B)  Energy stored in an apple 
C)  High temperature experienced in the desert 
D)  Time spent acquiring other resources 
E)  Space for a nest 
A)  Calcium for bone growth 
B)  Energy stored in an apple 
C)  High temperature experienced in the desert 
D)  Time spent acquiring other resources 
E)  Space for a nest

Question 7

The larger population that is composed of many subpopulations is known as a

Accepted Answer

A)  habitat patch. 
B)  habitat corridor. 
C)  megapopulation. 
D)  population structure. 
E)  metapopulation. 
A)  habitat patch. 
B)  habitat corridor. 
C)  megapopulation. 
D)  population structure. 
E)  metapopulation.

Question 8

The current per capita annual growth rate for the human population is about _______ percent.

Accepted Answer

A)  -2.2 
B)  -1.1 
C)  1.1 
D)  2.2 
E)  22 
A)  -2.2 
B)  -1.1 
C)  1.1 
D)  2.2 
E)  22

Question 9

Approximately how long did it take the human population to grow from 1 billion to 2 billion?

Accepted Answer

A)  Between 10 and 20 years 
B)  Between 100 and 200 years 
C)  Between 300 and 500 years 
D)  Between 1,000 and 2,000 years 
E)  More than 2,000 years 
A)  Between 10 and 20 years 
B)  Between 100 and 200 years 
C)  Between 300 and 500 years 
D)  Between 1,000 and 2,000 years 
E)  More than 2,000 years

Question 10

The human population size is expected to be about _______ in the year 2025.

Accepted Answer

A)  800 million 
B)  2 billion 
C)  5 billion 
D)  8 billion 
E)  20 billion 
A)  800 million 
B)  2 billion 
C)  5 billion 
D)  8 billion 
E)  20 billion

Question 11

The per capita growth rate of a population of guppies is 0.07 per month.If the per capita birth rate is 0.12 per month,the per capita death rate is _______ per month.

Accepted Answer

A)  -0.19 
B)  -0.05 
C)  0.05 
D)  0.12 
E)  0.19 
A)  -0.19 
B)  -0.05 
C)  0.05 
D)  0.12 
E)  0.19

Question 12

If the survivorship at the start of October is 0.4,how many mice died during the month of September?

Accepted Answer

A)  10 
B)  16 
C)  30 
D)  72 
E)  90 
A)  10 
B)  16 
C)  30 
D)  72 
E)  90

Question 13

Based on what you have read about metapopulation dynamics in Edith's checkerspot butterflies,which statement is most likely to be true?

Accepted Answer

A)  Large subpopulations are more likely to go extinct than smaller ones. 
B)  Patches near occupied patches can be colonized more readily than ones farther away. 
C)  Once extinct,a subpopulation can never be reestablished. 
D)  The butterfly flourishes during severe droughts. 
E)  The BD model captures the population dynamics of Edith's checkerspot butterflies better than the BIDE model. 
A)  Large subpopulations are more likely to go extinct than smaller ones. 
B)  Patches near occupied patches can be colonized more readily than ones farther away. 
C)  Once extinct,a subpopulation can never be reestablished. 
D)  The butterfly flourishes during severe droughts. 
E)  The BD model captures the population dynamics of Edith's checkerspot butterflies better than the BIDE model.

Question 14

Which statement is best supported by the relationship between acorn abundance and tick population size?

Accepted Answer

A)  Populations growing multiplicatively with constant r have a constant doubling time. 
B)  The carrying capacity of a population is an unalterable constant. 
C)  The tick population is a closed system. 
D)  The tick population is an open system. 
E)  Carrying capacity can change with changing conditions. 
A)  Populations growing multiplicatively with constant r have a constant doubling time. 
B)  The carrying capacity of a population is an unalterable constant. 
C)  The tick population is a closed system. 
D)  The tick population is an open system. 
E)  Carrying capacity can change with changing conditions.

Question 15

If the per capita birth rate of 360 shrubs is 0.05 and the per capita death rate is 0.02,the per capita growth rate is

Accepted Answer

A)  negative. 
B)  0.03. 
C)  0.05. 
D)  0.07. 
E)  18. 
A)  negative. 
B)  0.03. 
C)  0.05. 
D)  0.07. 
E)  18.

Question 16

One reason that apple maggot flies are distributed in patches is that they feed off of apple,hawthorn,and other similar trees,which themselves are not evenly distributed.These trees represent _______ for the flies.

Accepted Answer

A)  homeostasis 
B)  equilibria 
C)  metapopulations 
D)  corridors 
E)  habitats 
A)  homeostasis 
B)  equilibria 
C)  metapopulations 
D)  corridors 
E)  habitats

Question 17

Which statement about demography models is true?

Accepted Answer

A)  The BIDE model is more appropriate for a closed system than for an open system. 
B)  The BD model is more appropriate for an open system than for a closed system. 
C)  The BD model is more appropriate than the BIDE model for modeling metapopulations. 
D)  The BIDE model is more appropriate than the BD model for modeling metapopulations. 
E)  Subpopulations within a metapopulation must be closed systems. 
A)  The BIDE model is more appropriate for a closed system than for an open system. 
B)  The BD model is more appropriate for an open system than for a closed system. 
C)  The BD model is more appropriate than the BIDE model for modeling metapopulations. 
D)  The BIDE model is more appropriate than the BD model for modeling metapopulations. 
E)  Subpopulations within a metapopulation must be closed systems.

Question 18

Which condition would not cause population growth to be density dependent?

Accepted Answer

A)  An unexpected drought that kills plant seedlings 
B)  An increase in the incidence of malaria as populations increase 
C)  A limited number of suitable nest sites for a particular bird species in a particular area 
D)  Large aggregations of guppies that attract predators 
E)  Stress in mice caused by crowding,leading them to devote fewer resources to reproduction 
A)  An unexpected drought that kills plant seedlings 
B)  An increase in the incidence of malaria as populations increase 
C)  A limited number of suitable nest sites for a particular bird species in a particular area 
D)  Large aggregations of guppies that attract predators 
E)  Stress in mice caused by crowding,leading them to devote fewer resources to reproduction

Question 19

Under which conditions can the lesser grain borer persist indefinitely,but the rice weevil cannot persist?

Accepted Answer

A)  10°C and 10% moisture 
B)  10°C and 14% moisture 
C)  20°C and 10% moisture 
D)  30°C and 10% moisture 
E)  30°C and 14% moisture 
A)  10°C and 10% moisture 
B)  10°C and 14% moisture 
C)  20°C and 10% moisture 
D)  30°C and 10% moisture 
E)  30°C and 14% moisture

Question 20

Use the following to answer questions :
Populations of a certain yeast strain grow according to a simple form of logistic growth in which r declines linearly with population density.Suppose that the rate of increase is 0.04 per day when density is very low and the rate of increase is 0.02 per day when the density is 15,000 per cubic centimeter.
-What is the rate of growth at the carrying capacity?

Accepted Answer

A)  -0.04 
B)  0 
C)  0.02 
D)  0.04 
E)  It cannot be determined. 
A)  -0.04 
B)  0 
C)  0.02 
D)  0.04 
E)  It cannot be determined.

Exam 42: Populations

The principle of _______ explains why growth and reproduction rates are usually _______ correlated.

If the survivorship at the start of October is 0.4,what is the mortality rate during the month of September?

A BIDE model of population growth is more applicable than a BD model for a population

The primary feeding source of black-legged tick larvae is

Which item does not constitute a resource for a rodent?

The larger population that is composed of many subpopulations is known as a

The current per capita annual growth rate for the human population is about _______ percent.

Approximately how long did it take the human population to grow from 1 billion to 2 billion?

The human population size is expected to be about _______ in the year 2025.

The per capita growth rate of a population of guppies is 0.07 per month.If the per capita birth rate is 0.12 per month,the per capita death rate is _______ per month.

If the survivorship at the start of October is 0.4,how many mice died during the month of September?

Based on what you have read about metapopulation dynamics in Edith's checkerspot butterflies,which statement is most likely to be true?

Which statement is best supported by the relationship between acorn abundance and tick population size?

If the per capita birth rate of 360 shrubs is 0.05 and the per capita death rate is 0.02,the per capita growth rate is

One reason that apple maggot flies are distributed in patches is that they feed off of apple,hawthorn,and other similar trees,which themselves are not evenly distributed.These trees represent _______ for the flies.

Which statement about demography models is true?

Which condition would not cause population growth to be density dependent?

Under which conditions can the lesser grain borer persist indefinitely,but the rice weevil cannot persist?

Introduction

The Chemistry and Energy of Life

Nucleic Acids, Proteins, and Enzymes

Cells: the Working Units of Life

Cell Membranes and Signaling

Pathways That Harvest and Store Chemical Energy

The Cell Cycle and Cell Division

Inheritance, Genes, and Chromosomes

DNA and Its Role in Heredity

From Dna to Protein: Gene Expression

Regulation of Gene Expression

Genomes

Biotechnology

Genes, Development, and Evolution

Processes of Evolution

Reconstructing and Using Phylogenies

Speciation

The History of Life on Earth

Bacteria, Archaea, and Viruses

The Origin and Diversification of Eukaryotes

The Evolution of Plants

The Evolution and Diversity of Fungi

Animal Origins and Diversity

The Plant Body

Plant Nutrition and Transport

Plant Growth and Development

Reproduction of Flowering Plants

Plants in the Environment

Fundamentals of Animal Function

Nutrition and Digestion

Breathing

Circulation

Muscle and Movement

Neurons, Sense Organs, and Nervous Systems

Nervous and Endocrine Control

Water and Salts: Excretion

Animal Reproduction

Animal Development

Immunology: Animal Defense Systems

Animal Behavior

The Distribution of Earths Ecological Systems

Ecological and Evolutionary Consequences of Interactions Within and Among Species

Ecological Communities

The Global Ecosystem

Filters

The principle of _ explains why growth and reproduction rates are usually _ correlated.