Question 1

Which characteristic is typical of a K-strategist species?

Accepted Answer

A)  Short life span 
B)  Large body size 
C)  Large number of offspring 
D)  Use of specialized resources 
E)  Failure to provide care to offspring 
A)  Short life span 
B)  Large body size 
C)  Large number of offspring 
D)  Use of specialized resources 
E)  Failure to provide care to offspring

Question 2

In a study of the population density of bullfrogs in a lake, 25 frogs are captured and marked in the first sampling.Five days later, 30 frogs are captured, 10 of which have marks.Based on these results, the estimated number of bullfrogs in this population is

Accepted Answer

A)  40. 
B)  55. 
C)  65. 
D)  75. 
E)  250. 
A)  40. 
B)  55. 
C)  65. 
D)  75. 
E)  250.

Question 3

In the twenty-first century, what type of survivorship curve does the human population have? What would the type likely have been for early Homo sapiens, before the development of modern agriculture, industry, and medicine?

Accepted Answer

Today, the human population has a Type I

Question 4

Human activities are likely to affect the number of populations within a metapopulation by

Accepted Answer

A)  preventing the dispersal of organisms, thereby decreasing the number. 
B)  increasing the dispersal of organisms, thereby decreasing the number. 
C)  fragmenting habitat through construction and agriculture, thereby increasing the number. 
D)  providing food that causes organisms to spread out more, thereby increasing the number. 
E)  providing additional food and habitat resources, thereby increasing the number. 
A)  preventing the dispersal of organisms, thereby decreasing the number. 
B)  increasing the dispersal of organisms, thereby decreasing the number. 
C)  fragmenting habitat through construction and agriculture, thereby increasing the number. 
D)  providing food that causes organisms to spread out more, thereby increasing the number. 
E)  providing additional food and habitat resources, thereby increasing the number.

Question 5

If the per capita growth rate of a population equals zero,

Accepted Answer

A)  immigration is occurring. 
B)  emigration is occurring. 
C)  the population is stable. 
D)  the population is growing. 
E)  immigration is not equal to emigration. 
A)  immigration is occurring. 
B)  emigration is occurring. 
C)  the population is stable. 
D)  the population is growing. 
E)  immigration is not equal to emigration.

Question 6

Which factor would be involved in density-independent population growth?

Accepted Answer

A)  Flooding 
B)  Pathogens 
C)  Predators 
D)  Food supply 
E)  Competitors 
A)  Flooding 
B)  Pathogens 
C)  Predators 
D)  Food supply 
E)  Competitors

Question 7

Refer to the graph shown.   A species shows a survivorship curve similar to curve C.A biologist viewing this curve can deduce that this species likely has which characteristic?

Accepted Answer

A)  Large size 
B)  Long life span 
C)  Maternal care 
D)  High mortality rate of young 
E)  Constant risk of mortality through life 
A)  Large size 
B)  Long life span 
C)  Maternal care 
D)  High mortality rate of young 
E)  Constant risk of mortality through life

Question 8

As populations of giant clams in the Indo-Pacific become sparser, local extinctions of giant clam populations have increased.This situation is likely related to the Allee effect because, in sparser populations, clams

Accepted Answer

A)  reproduce less successfully. 
B)  are less able to find food resources. 
C)  have an increased death rate due to disease. 
D)  are unable to carry out cooperative interactions. 
E)  have a greater susceptibility to weather changes. 
A)  reproduce less successfully. 
B)  are less able to find food resources. 
C)  have an increased death rate due to disease. 
D)  are unable to carry out cooperative interactions. 
E)  have a greater susceptibility to weather changes.

Question 9

Refer to the graph showing logistic growth.   At which point would there be zero population growth (dN/dt = 0)?

Accepted Answer

A)  1 
B)  2 
C)  3 
D)  4 
E)  5 
A)  1 
B)  2 
C)  3 
D)  4 
E)  5

Question 10

To estimate the population size of a flock of starlings, a sample of 45 birds is netted, banded, and released.One week later, a second sample of 50 birds is netted, and 15 of these birds are found to have bands on them.Based on these data, what is the best estimate of the starling flock's population size?

Accepted Answer

A)  105 
B)  150 
C)  675 
D)  750 
E)  3,000 
A)  105 
B)  150 
C)  675 
D)  750 
E)  3,000

Question 11

As a population's resources become limited, it begins to display a pattern called _______ growth.

Accepted Answer

The answer of As a population's resources become limited, it...

Question 12

A survivorship curve for an organism that has a constant risk of mortality throughout its lifetime is likely to have a shape that is

Accepted Answer

A)  concave. 
B)  linear. 
C)  convex. 
D)  exponential. 
E)  parabolic. 
A)  concave. 
B)  linear. 
C)  convex. 
D)  exponential. 
E)  parabolic.

Question 13

To be defined as migration, animal dispersion must include all of the following factors except

Accepted Answer

A)  seasonality. 
B)  returning to the same place. 
C)  being restricted to large animals. 
D)  movement of the entire population. 
E)  reducing probability of local extinction. 
A)  seasonality. 
B)  returning to the same place. 
C)  being restricted to large animals. 
D)  movement of the entire population. 
E)  reducing probability of local extinction.

Question 14

In terms of relative size, what is the most likely relationship between populations, metapopulations, and geographic ranges of a single species of organism?

Accepted Answer

A)  Geographic range > metapopulation > population 
B)  Geographic range > population > metapopulation 
C)  Metapopulation > population > geographic range 
D)  Metapopulation > geographic range > population 
E)  Population > metapopulation > geographic range 
A)  Geographic range > metapopulation > population 
B)  Geographic range > population > metapopulation 
C)  Metapopulation > population > geographic range 
D)  Metapopulation > geographic range > population 
E)  Population > metapopulation > geographic range

Question 15

For which of the following populations would biologists most likely use number of individuals per unit of volume, rather than number of individuals per unit of area, in measuring population density?

Accepted Answer

A)  Guppies in a lake 
B)  Pine trees in a forest 
C)  Squirrels on a campus 
D)  Mice in a patch of grassland 
E)  Oak seedlings in a backyard 
A)  Guppies in a lake 
B)  Pine trees in a forest 
C)  Squirrels on a campus 
D)  Mice in a patch of grassland 
E)  Oak seedlings in a backyard

Question 16

The common chimpanzee, Pan troglodytes, is found in a wide but discontinuous area across Equatorial Africa between 13 degrees North and 7 degrees south latitude.This is a description of the chimpanzees' _______.

Accepted Answer

The answer of The common chimpanzee, Pan troglodytes, is found...

Question 17

On January 1, an animal population is 198.During the year, 60 animals are born into the population and 38 die.Another 14 enter the population from outside, and 10 leave.Using the population equation, determine the population size on December 31.Also determine the population growth rate.Is this population growing, stable, or declining?

Accepted Answer

The population equation is: N_t = N₀ + (B -

Question 18

The table shows hypothetical colonization data for a population of barnacles.Describe the type of population growth for this population from days 0 to120.What is the carrying capacity of the population, and what factors might explain the change in population after day 120?

Accepted Answer

The population begins growing exponentia

Question 19

The brown rat can breed year-round, with a female producing five litters of 7 to 14 offspring per year.Rats reach sexual maturity in about five weeks, and a rat population can increase by ten times in 15 weeks.The maximum lifespan is three years, and the yearly mortality rate is about 95 percent.In terms of life history strategy, brown rats can be said to be _______.

Accepted Answer

The answer of The brown rat can breed year-round, with...

Question 20

A plant living in the understory of a forest would be least likely to use which method of seed dispersal?

Accepted Answer

A)  The plant shoots its seeds from pods. 
B)  Wind carries the seeds long distances. 
C)  The plant has burrs that stick to mammals. 
D)  An animal carries the seeds and buries them elsewhere. 
E)  An animal eats the fruit and deposits the seeds elsewhere. 
A)  The plant shoots its seeds from pods. 
B)  Wind carries the seeds long distances. 
C)  The plant has burrs that stick to mammals. 
D)  An animal carries the seeds and buries them elsewhere. 
E)  An animal eats the fruit and deposits the seeds elsewhere.

Exam 54: Populations

Which characteristic is typical of a K-strategist species?

In a study of the population density of bullfrogs in a lake, 25 frogs are captured and marked in the first sampling.Five days later, 30 frogs are captured, 10 of which have marks.Based on these results, the estimated number of bullfrogs in this population is

In the twenty-first century, what type of survivorship curve does the human population have? What would the type likely have been for early Homo sapiens, before the development of modern agriculture, industry, and medicine?

Human activities are likely to affect the number of populations within a metapopulation by

If the per capita growth rate of a population equals zero,

Which factor would be involved in density-independent population growth?

Refer to the graph shown. A species shows a survivorship curve similar to curve C.A biologist viewing this curve can deduce that this species likely has which characteristic?

As populations of giant clams in the Indo-Pacific become sparser, local extinctions of giant clam populations have increased.This situation is likely related to the Allee effect because, in sparser populations, clams

Refer to the graph showing logistic growth. At which point would there be zero population growth (dN/dt = 0)?

As a population's resources become limited, it begins to display a pattern called _______ growth.

A survivorship curve for an organism that has a constant risk of mortality throughout its lifetime is likely to have a shape that is

To be defined as migration, animal dispersion must include all of the following factors except

In terms of relative size, what is the most likely relationship between populations, metapopulations, and geographic ranges of a single species of organism?

For which of the following populations would biologists most likely use number of individuals per unit of volume, rather than number of individuals per unit of area, in measuring population density?

The common chimpanzee, Pan troglodytes, is found in a wide but discontinuous area across Equatorial Africa between 13 degrees North and 7 degrees south latitude.This is a description of the chimpanzees' _______.

The table shows hypothetical colonization data for a population of barnacles.Describe the type of population growth for this population from days 0 to120.What is the carrying capacity of the population, and what factors might explain the change in population after day 120?

A plant living in the understory of a forest would be least likely to use which method of seed dispersal?

Studying Life

Small Molecules and the Chemistry of Life

Proteins, Carbohydrates, and Lipids

Nucleic Acids and the Origin of Life

Cells: the Working Units of Life

Cell Membranes

Cell Communication and Multicellularity

Energy, Enzymes, and Metabolism

Pathways That Harvest Chemical Energy

Photosynthesis: Energy From Sunlight

The Cell Cycle and Cell Division

Inheritance, Genes, and Chromosomes

Dna and Its Role in Heredity

From Dna to Protein: Gene Expression

Gene Mutation and Molecular Medicine

Regulation of Gene Expression

Genomes

Recombinant Dna and Biotechnology

Mechanisms of Evolution

Reconstructing and Using Phylogenies

Speciation

Evolution of Genes and Genomes

The History of Life on Earth

Bacteria, Archaea, and Viruses

The Origin and Diversification of Eukaryotes

Plants Without Seeds: From Water to Land

The Evolution of Seed Plants

The Evolution and Diversity of Fungi

Animal Origins and the Evolution of Body Plans

Protostome Animals

Deuterostome Animals

The Plant Body

Transport in Plants

Plant Nutrition

Regulation of Plant Growth

Reproduction in Flowering Plants

Plant Responses to Environmental Challenges

Physiology, Homeostasis, and Temperature Regulation

Animal Hormones

Immunology: Animal Defense Systems

Animal Reproduction

Animal Development

Neurons, Glia, and Nervous Systems

Sensory Systems

The Mammalian Nervous System: Structure and Higher Functions

Musculoskeletal Systems

Gas Exchange

Circulatory Systems

Nutrition, Digestion, and Absorption

Salt and Water Balance and Nitrogen Excretion

Animal Behavior

The Physical Environment and Biogeography of Life

Species Interactions

Communities

Ecosystems

A Changing Biosphere

Filters