Chapter 8 and 9 Unit Test
Populations
If the birth rate in country “A” declines from its
current level, how might the population change
over time?
10
a. the population growth will begin to slow
b. the population growth will begin to
increase
c. the population growth will stabilize
d. the population growth will rapidly
decrease
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What problems are typically associated with the
growth pattern seen in country “B”?
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a. shortage of fuelwood
b. contaminated water supplies
c. lack of arable land
d. all of the above
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What are the growth patterns shown in the
above population pyramids for countries “A” and
“B”?
1
0
a. country A has high death rate early and long
life expectancy
b. country B has low death rate early and life
expectancy of 50 years
c. country B has high death rate and little life
expectancy
d. country A has low death rate and little life
expectancy
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Populations are growing more rapidly
in
1.
2.
3.
4.
Mexico
US
Europe
Ohio
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1
2
3
4
Less-developed countries suffer more from rapid
population growth because they are less likely to have
the _____ to support the population.
1.
2.
3.
4.
fertility rates
infrastructure
cultural values
family-planning
methods
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10
Which of the following would not
cause population to decrease in a
region?
1.
2.
3.
4.
increased immigration
decreased fertility rates
increased emigration
decreased survivorship
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10
Scientists predict population sizes by
using
1. age structure
2. survivorship
3. fertility rate, and
migration.
4. All of the above
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10
Countries with high growth rates
usually have an age structure that has
1. an even distribution over all
ages.
2. more older people than
young people.
3. more younger people than
older people.
4. more middle-aged people
than younger people.
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10
During Stage 2 of a population’s
demographic transition, the death rate
1.
2.
3.
4.
increases.
remains the same.
decreases.
is zero.
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10
Countries that have entered the third
stage of demographic transition are
most probably characterized by
1. weak or developing economies.
2. death rates that far exceed birth
rates.
3. social conditions that favor
smaller families.
4. populations with a high
proportion of young people.
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10
Between 1880 and 1930 human
population doubled due to
1. the Industrial revolution.
2. a combination of high
birth rates and low death
rates.
3. improvements in societal
infrastructure and
services.
4. All of the above
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10
Which of the following is true of
human demographic trends?
1. In preindustrial societies, birth rates are
low, and the population grows rapidly.
2. When the average number of children
born to each woman falls, the total
population always increases.
3. When birth rates and death rates are
both high, the population grows slowly,
if at all.
4. Death rates rise in the third stage of the
demographic transition.
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10
Which of the following makes it
difficult to reduce population growth?
1. High literacy rates result in women
wanting to have more children.
2. Population sizes will not decline until
some people start having to do without
food and other necessities of life.
3. Many people live in cities, where large
families are an advantage.
4. Many people have low literacy and
limited access to healthcare.
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10
Growth rates for different parts of the world vary
depending on the level of development of the region.
Which region is experiencing the biggest increase in
population?
1.
2.
3.
4.
Europe
Asia
North America
Australia
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Because birth rates have begun to fall,
Earth’s population will
1. soon stabilize at the level it is
today—about 6 billion.
2. begin to decrease until it
reaches 5 billion.
3. increase for a short time and
then decrease to current levels.
4. stabilize somewhere around 9
billion by 2050.
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Educating women worldwide has
lowered birthrates partly because
1. educated women need to bear
many children to ensure that
some will survive.
2. educated women may learn
family-planning techniques.
3. educated women contribute less
to their family income.
4. None of the above
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10
Which factor contributed most to the
exponential growth of the human
population?
1.
2.
3.
4.
more food, better hygiene
higher fertility rates
higher birth rates
increased immigration
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Professionals who study and make
predictions about human populations
are called
1.
2.
3.
4.
stenographers.
geologists.
demographers.
populists.
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10
The difference between a predator
and a parasite is that a predator
1. usually kills and eats its
prey.
2. lives in or on a host.
3. benefits from another
organism.
4. harms another organism.
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10
Competition for food cannot occur
1. between two populations.
2. among members of the same
population.
3. among populations whose
niches overlap.
4. between animals from two
different ecosystems.
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10
Which of the following statements is
correct?
1. An organism’s niche is only the
part of its habitat that it eats.
2. An organism’s habitat is a
location.
3. Habitat and niche are the same
thing.
4. An organism’s niche is outside
its habitat.
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10
Which of the following is one of the
main properties used to describe a
population?
1.
2.
3.
4.
number of individuals
number of species
color of individuals
kind of adaptations
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10
Which of the following statements explains why
the growth of orchids on the high branches of
tropical trees is an example of commensalism?
1. The orchids draw
nourishment from the trees.
2. The trees are neither
benefited nor harmed.
3. The orchids keep parasites
away.
4. The trees receive nutrients
from the orchids.
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The carrying capacity of an
environment for a particular species at
a particular time is determined by the
1. number of individuals in the
species.
2. reproductive potential of the
species.
3. distribution of the population.
4. supply of the most limited
resources.
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10
Which of the following has the
greatest effect on reproductive
potential?
1. producing more offspring
at a time
2. having a longer life span
3. reproducing more often
4. reproducing earlier in life
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10
If over a long period of time, each pair of adults in a
population had only two offspring and the offspring
lived to reproduce, the population would
1.
2.
3.
4.
grow.
remain the same.
shrink.
disperse randomly.
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10
The number of wild cows per square
kilometer in a prairie is the horse
populations
1.
2.
3.
4.
density.
size.
dispersion.
birth rate.
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10
A species of plant has exponential growth after it is
introduced into an area where it has never lived. Which
statement best describes exponential growth?
1. Each individual plant grows
much larger than usual.
2. The population immediately
decreases.
3. Within a few years the
population increases
dramatically.
4. The species’ reproductive
potential declines.
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10
Which of the following would most
likely cause a large number of densityindependent deaths in a population?
1.
2.
3.
4.
winter storms
predators
disease-carrying insects
limited resources
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10
Which of the following populations
has a random or pattern less
dispersion?
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1.
2.
3.
4.
flock of flamingoes
herd of bison
pine trees in a pine forest
solitary snakes in a desert
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10
The density of a population is
1. the number of individuals
born every year.
2. the proportion of males
and females.
3. the number of individuals
living in cities.
4. the number of individuals
per unit area.
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