Quiz 18: Populations
Biology
Q 1Q 1
A group of organisms of one species occupying a geographical location at the same time is a
A)population.
B)community.
C)peer group.
D)flock.
E)herd.
Free
Multiple Choice
A Explanation: A population is one interbreeding group of organisms from a species.Please see section 18.1 for more information.
Q 2Q 2
The physical location where an organism lives is termed its
A)home boundary.
B)range.
C)habitat.
D)community.
E)ecosystem.
Free
Multiple Choice
C Explanation: Animals are usually well adapted to their particular habitat.Please see section 18.1 for more information.
Q 3Q 3
All of the organisms in a given location or area are termed a
A)peer group.
B)flock.
C)community.
D)population.
E)herd.
Free
Multiple Choice
C Explanation: A community is composed of populations from a number of different species.Please see section 18.1 for more information.
Q 4Q 4
The study of the relationships among organisms and the environment is
A)ethology.
B)habitology.
C)ergonomics.
D)ecology.
E)geology.
Free
Multiple Choice
Q 5Q 5
The number of individuals of a species per unit area or volume of habitat is
A)carrying capacity.
B)population density.
C)a community.
D)population distribution.
E)population dynamics.
Free
Multiple Choice
Q 6Q 6
The number of new individuals produced per unit time in a population is its
A)immigration rate.
B)emigration rate.
C)death rate.
D)birth rate.
E)expatriation ratE.
Free
Multiple Choice
Q 7Q 7
The number of individuals that die in a population per unit time is its
A)immigration rate.
B)emigration rate.
C)death rate.
D)birth rate.
E)expatriation ratE.
Free
Multiple Choice
Q 8Q 8
A population age structure diagram depicting an equal number of individuals in each age group suggests that the population is
A)stable.
B)growing.
C)declining.
D)facing extinction.
E)very small.
Free
Multiple Choice
Q 9Q 9
In a survivorship curve,a type I species,like a human or elephant,is a species that has
A)an equal probability of dying at any age.
B)the highest probability of dying as it reaches its maximum life span.
C)a strong possibility of becoming extinct in a relatively short period of time.
D)an extremely short life span.
E)the highest probability of dying at a very young agE.
Free
Multiple Choice
Q 10Q 10
In a survivorship curve,a type II species,like a song bird,is a species that has
A)an equal probability of dying at any age.
B)a strong possibility of becoming extinct in a relatively short period of time.
C)the highest probability of dying as it reaches its maximum life span.
D)an extremely short life span.
E)the highest probability of dying at a very young agE.
Free
Multiple Choice
Q 11Q 11
In a survivorship curve,a type III species,like most insects and plants,is a species that has
A)an equal probability of dying at any age.
B)a strong possibility of becoming extinct in a relatively short period of time.
C)the highest probability of dying at a very young age.
D)the highest probability of dying as it reaches its maximum life span.
E)an extremely long life span.
Free
Multiple Choice
Q 12Q 12
The maximum number of individuals that a habitat can support indefinitely is the habitat's
A)density dispersion.
B)carrying capacity.
C)growth capacity.
D)environmental loaD.
E)dispersion capacity.
Free
Multiple Choice
Q 13Q 13
In regards to a species' life history,opportunistic species
A)are long-lived.
B)provide extensive care for their offspring.
C)are limited primarily by carrying capacity.
D)reproduce later in life.
E)produce many offspring.
Free
Multiple Choice
Q 14Q 14
In regards to a species' life history,equilibrium species
A)have only a few offspring.
B)are short-lived.
C)reproduce at an early age.
D)have a large number of offspring.
E)give very little care to their offspring.
Free
Multiple Choice
Q 15Q 15
A human population with a large percentage of pre-reproductive individuals is common in
A)less-developed countries and will most likely increase in size.
B)more-developed countries and will most likely increase in size.
C)less-developed countries and will most likely decrease in size.
D)more-developed countries and will most likely decrease in size.
Free
Multiple Choice
Q 16Q 16
A human population with a large percentage of post-reproductive individuals is common in
A)less-developed countries and will most likely increase in size.
B)more-developed countries and will most likely increase in size.
C)more-developed countries and will most likely decrease in size.
D)less-developed countries and will most likely decrease in size.
E)No answer is correct.
Free
Multiple Choice
Q 17Q 17
Predation of deer by wolves is an example of a
A)density-independent limit.
B)density-codependent limit.
C)density-dependent limit.
D)death-dependent factor.
E)death-independent factor.
Free
Multiple Choice
Q 18Q 18
An example of a density-independent factor that affects a population's growth is
A)insects eating your tomato plants.
B)your tomato plants competing for water.
C)a fungus infecting your tomato plants.
D)frost killing all of your tomato plants.
E)All answers are correct.
Free
Multiple Choice
Q 19Q 19
In 2010,India had a population of 1,170,000,000,a birth rate of 0.027,and a death rate of 0.013.What was the growth rate of India's population?
A)0.027
B)0.013
C)0.014
D)0.040
E)0.001
Free
Multiple Choice
Q 20Q 20
In 2010,India had a population of 1,170,000,000,a birth rate of 0.027,and a death rate of 0.013.Approximately how much did the Indian population grow in 2010?
A)170,000,000
B)1,700,000
C)170,000
D)17,000,000
E)17,000
Free
Multiple Choice
Q 21Q 21
Based upon the age structure diagram,you expect the Indian population to_20_2013_QC_42798
A)grow because all of the age classes have roughly equal proportions of people.
B)grow then shrink because many of the people will be entering the post-reproductive years.
C)grow because a large proportion of the population will be entering the reproductive years.
D)grow then decline because a lower proportion of individuals are in prereproductive age classes.
E)No answer is correct.
Free
Multiple Choice
Q 22Q 22
Based upon the age structure diagram,you expect the Chinese population to13_QC_42798
A)grow because all of the age classes have roughly equal proportions of people.
B)grow then shrink because many of the people will be entering the post-reproductive years.
C)grow because a large proportion of the population will be entering the reproductive years.
D)grow then decline because a lower proportion of individuals are in prereproductive age classes.
E)No answer is correct.
Free
Multiple Choice
Q 23Q 23
Based upon the age structure diagram,you expect the American population to2013_QC_42798
A)grow because all of the age classes have roughly equal proportions of people.
B)grow then shrink because many of the people will be entering the post-reproductive years.
C)grow because a large proportion of the population will be entering the reproductive years.
D)grow then decline because a lower proportion of individuals are in prereproductive age classes.
E)No answer is correct.
Free
Multiple Choice
Q 24Q 24
Whic best describes the link between survivorship curves and equilibrium species?
A)Equilibrium species are limited by density-independent factors and have few offspring.
B)Equilibrium species are limited by density-dependent factors and have many offspring.
C)Equilibrium species are limited by density-dependent factors and have few offspring.
D)Equilibrium species are limited by density-independent factors and have many offspring.
Free
Multiple Choice
Q 25Q 25
Which best describes the link between survivorship curves and opportunistic species?
A)Opportunistic species are limited by density-dependent factors and have few offspring.
B)Opportunistic species are limited by density-independent factors and have few offspring.
C)Opportunistic species are limited by density-independent factors and have many offspring.
D)Opportunistic species are limited by density-dependent factors and have many offspring.
E)No answer is correct.
Free
Multiple Choice
Q 26Q 26
Researchers studying guppies in Trinidad found that guppies in streams with high predation reproduced earlier and more frequently.Which of the following is most important in driving the guppies to change their life history in face of predation?
A)The guppies are an equilibrium species.
B)The guppies are an opportunistic species.
C)Density-independent factors affects the guppy populations.
D)Density-dependent factors affects the guppy populations.
E)Sexual selection affects the guppy populations.
Free
Multiple Choice
Q 27Q 27
Why have human growth rates increased the most in developing countries in the past 50 years?
A)Death rates have fallen more slowly than birth rates.
B)Death rates have gone up faster than birth rates.
C)Death rates have fallen faster than birth rates.
D)Death rates have gone up more slowly than birth rates.
Free
Multiple Choice
Q 28Q 28
Why are the leading causes of human death in high-income countries heart disease,stroke,and cancer,while in low-income countries infectious diseases are the leading causes of death?
A)High-income countries have sedentary life habits,excess food resources,and longer life expectancies.
B)High-income countries have larger ecological footprints.
C)High-income countries have larger population densities only.
D)High-income countries have larger population densities and are usually clustereD.
E)Genetic differences between populations causes the differences.
Free
Multiple Choice
Q 29Q 29
A country's ecological footprint can be calculated by multiplying its population size by the footprint of each individual.Why are some ecologists concerned about the ecological footprint of a country like India?
A)Its population is increasing.
B)Its standard of living is increasing.
C)Both its population and standard of living are increasing.
D)Its population and land area are increasing.
E)Its standard of living and land area are increasing.
Free
Multiple Choice
Free
True False
Free
True False
Q 32Q 32
The maximum number of individuals of a population that a habitat can support indefinitely is its carrying capacity.
Free
True False
Q 33Q 33
Governments of France,Canada,and China offer financial incentives to encourage citizens to have children.
Free
True False
Q 34Q 34
The United Nations has estimated (for the high estimate)that the world's human population may reach about 10.5 billion by the year 2050 and will continue to increase.
Free
True False
Q 35Q 35
Conditions whose growth-limiting effects increase as a population grows are density-independent factors.
Free
True False
Q 36Q 36
Which of the following organisms is an example of an opportunistic species?
A)dolphins
B)humans
C)rabbits
D)penguins
E)tortoises
Free
Multiple Choice
Q 37Q 37
Which of the following organisms is an example of an equilibrium species?
A)cats
B)rats
C)spiders
D)whales
E)goldfish
Free
Multiple Choice
Q 38Q 38
Ecologists study
A)prokaryotes only.
B)eukaryotes only.
C)interactions between all organisms.
D)plants and animals only.
E)animals only.
Free
Multiple Choice
Q 39Q 39
Which falls outside the study of ecology?
A)spread of disease
B)predator-prey relationships
C)invasive plant species
D)bonds of DNA
E)land management
Free
Multiple Choice
Q 40Q 40
Which is an example of an aquatic ecosystem?
A)fishes,snails,crabs,water,and salinity
B)fishes,snails,and crabs only
C)both water and salinity
D)water only
E)salinity only
Free
Multiple Choice
Q 41Q 41
Which of the following is an example of an aquatic community?
A)fishes,snails,crabs,water,and salinity
B)fishes,snails,and crabs only
C)both water and salinity
D)water only
E)salinity only
Free
Multiple Choice
Q 42Q 42
Oysters and many other mollusks produce many offspring of which only a few survive to adulthood and then have little risk of predation with their strong adult shells.Oysters are an example of an organism with a type ______ survivorship curve.
A)0
B)I
C)II
D)III
E)IV
Free
Multiple Choice
Q 43Q 43
Hydra,a type of cnidarian,have equal survival rates through life because they are equally fit at all stages.Hydra are an example of an organism with a type ______ survivorship curve.
A)0
B)I
C)II
D)III
E)IV
Free
Multiple Choice
Q 44Q 44
A density-independent factor is one that affects population without regard to the number of individuals per area.
Free
True False
Q 45Q 45
If a species of fruit fly needs a minimum amount of leaf surface area for mating,once there are enough fruit flies to occupy all mating spaces,the population is at carrying capacity.
Free
True False
Q 46Q 46
If a species of guppy lives in a stream where there is more food than they need,they are at carrying capacity.
Free
True False
Q 47Q 47
If there are 10 tortoises on a 2 hectare island,the population density is 5 tortoises per hectare.
Free
True False
Q 48Q 48
If a scientist sees 20 finches in 3 trees where they nest at 5 PM,the population density is 4.
Free
True False