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WorksheetsChapter 4 - Population Ecology - Review
Total questions: 50
Worksheet time: 25mins
Name
Class
Date
1.
The arrival of individuals from outside an area.
a)
Immigration
b)
Emigration
c)
Migration
d)
Carrying Capacity
2.
The largest population size that an
environment can sustainably support.
environment can sustainably support.
a)
Immigration
b)
Emigration
c)
Migration
d)
Carrying Capacity
3.
The proportion of males to females in a population.
a)
Population
b)
Sex Ratio
c)
Population Distribution
d)
Population Density
4.
Members of a species that live in the same area.
a)
Population
b)
Sex Ratio
c)
Population Distribution
d)
Population Density
5.
How organisms are arranged within an area.
a)
Population
b)
Sex Ratio
c)
Population Distribution
d)
Population Density
6.
The number of individuals within a population per unit area.
a)
Population
b)
Sex Ratio
c)
Population Distribution
d)
Population Density
7.
The specific environment in which an organism lives.
a)
Habitat
b)
Community
c)
Population
d)
Ecosystem
8.
A group of individuals that interbreed and produce fertile offspring.
a)
Habitat
b)
Community
c)
Species
d)
Ecosystem
9.
All the populations in a particular area.
a)
Habitat
b)
Community
c)
Population
d)
Ecosystem
10.
All the living things and their physical environments within a particular area.
a)
Habitat
b)
Community
c)
Population
d)
Ecosystem
11.
Characteristic of the environment that restricts population growth.
a)
Sex Ratio
b)
Limiting Factor
c)
Carrying Capacity
d)
Exponential Growth
12.
Occurs when a population increases by a fixed percentage each year.
a)
Sex Ratio
b)
Limiting Factor
c)
Carrying Capacity
d)
Exponential Growth
13.
Giraffes, lions, zebras, hyenas, and all the other living things of the Serengeti make up a(n)
a)
ecosystem.
b)
population
c)
community
d)
biosphere
14.
Every spring, many species of bird travel north to the Arctic to breed, and in the fall travel south again for the winter. This is an example of
a)
immigration
b)
emigration
c)
migration
d)
population growth
15.
You are studying the vegetation communities of the Mongolian grasslands in a 1000-square-kilometer-area. What is your best strategy for estimating the number of individuals of different plant species growing throughout the grasslands?
a)
direct observation
b)
sampling
c)
indirect observation
d)
simply counting each one
16.
You will be conducting a study of the interactions of vegetation, animals, mineral composition of the soil, and water levels in a saltmarsh. You are studying the saltmarsh
a)
population.
b)
biosphere.
c)
community.
d)
ecosystem.
17.
All the living things and their physical environment within a given area” best defines
a)
a population.
b)
a biosphere.
c)
a community.
d)
an ecosystem.
18.
A population of wolves is reintroduced into Yellowstone National Park. For the first decade, the wolf population grows exponentially. Then, the population growth slows. The new pattern is known as
a)
logistic growth.
b)
limiting factors.
c)
carrying capacity.
d)
exponential growth.
19.
Pandas depend on bamboo. The amount of intact bamboo forest will help determine the
a)
biotic potential of the population.
b)
carrying capacity of the population.
c)
sex ratio of the population.
d)
limiting factor of the population.
20.
If 300 deer live within a 20-km2 area, then 15 deer per km² is the deer _____ for that area.
a)
carrying capacity
b)
population density
c)
limiting factor
d)
survivorship curve
21.
The graph above represents
a)
exponential growth.
b)
logistic growth.
c)
carrying capacity.
d)
limiting factors.
22.
Fish, cattails, frogs, water lilies, dragonflies, and all the other living things in a pond make up a(n)
a)
population.
b)
community.
c)
ecosystem.
d)
biosphere.
23.
A grassland experiences a drought that causes most of the plants to die and several watering holes to dry up. The antelope that live on the grassland experience a decrease in population because water and plants are key
a)
biotic factors.
b)
abiotic factors.
c)
resources.
d)
habitats.
24.
In a population of 100 monkeys, you count 48 males and 52 females. This population has an approximately even
a)
sex ratio.
b)
biotic potential.
c)
survivorship curve.
d)
carrying capacity.
25.
In the graph above, the population size is
a)
increasing.
b)
decreasing.
c)
remaining stable.
d)
undergoing cyclic change.
26.
A caribou is adapted to live in cold tundra environments. It would not be able to survive in a tropical forest because the tropical forest does not provide a suitable
a)
community.
b)
population.
c)
population structure.
d)
habitat.
27.
A population’s growth rate is determined by births, deaths,
a)
immigration, and emigration.
b)
immigration, and migration.
c)
migration, and biotic potential.
d)
immigration, and biotic potential.
28.
An example of a density-dependent limiting factor is
a)
an avalanche.
b)
the amount of available food.
c)
a sudden flood.
d)
a decrease in water due to drought.
29.
The equation for determining population growth is
a)
(births + deaths) – (immigration + emigration).
b)
(births + emigration) + (deaths – immigration).
c)
(births + immigration) + (deaths – emigration).
d)
(births + migration) + (deaths – emigration).
30.
Many bird species are territorial. In territorial birds species, what kind of population structure would you expect?
a)
uniform
b)
random
c)
clumped
d)
aging
31.
The _____ is the simplest level of organization that the ecologist studies.
a)
community
b)
individual
c)
ecosystem
d)
population
32.
In a population in which most of the individuals are of pre-reproductive or reproductive age, the population is likely to _____ quickly in the future.
a)
increase
b)
decrease
c)
become extinct
d)
fluctuate
33.
The diagram above shows a _____ distribution pattern.
a)
random
b)
clumped
c)
uniform
d)
cyclic
34.
The _____ is the most complex level of organization that an ecologist studies.
a)
ecosystem
b)
biosphere
c)
community
d)
individual
35.
A forest fire that kills a large percentage of a pine beetle population is an example of a density-_____ factor that limits population.
a)
dependent
b)
independent
36.
You need to count the number of trees of a certain species within a 300-km2 area. Your best strategy for estimating the number of trees is ______.
a)
sampling
b)
direct observation
c)
indirect observation
d)
simply counting each one
37.
In year one of a study, there are 100 mice living in a field. In year two, there are 110. In year three, there are 121. In year four, there are 132. The mouse population is experiencing a _____ growth pattern.
a)
exponential
b)
logistic
c)
uniform
d)
cyclic
38.
A dead tree is an example of a _____ in a forest ecosystem.
a)
biotic factor
b)
abiotic factor
c)
nonessential factor
d)
critical factor
39.
On a beach in Hawaii, you observe a hatching of sea turtles. Hundreds of baby turtles climb out of nests in the sand and flop towards the sea. As they cross the beach, dozens are caught by predators and eaten. Which type of survivorship curve do you think the sea turtles display?
a)
Type I
b)
Type II
c)
Type III
d)
Type IV
40.
In the age structure diagrams, which diagram represents a population that is likely to grow rapidly in the future?
a)
A
b)
B
c)
C
41.
Imagine that the graphs above represent three populations of a rare species of deer, each protected in a separate wildlife refuge. Your goal as director of the wildlife refuge system is to make sure that the population of deer remains healthy or grows throughout the system. Which population is most likely to need attention?
a)
A
b)
B
c)
C
42.
One of these populations has reached carrying capacity. Which one is it?
a)
A
b)
B
c)
C
43.
An illustration of the Monteverde Cloud Forest is shown above. Which of the following is a biotic factor visible in the image?
a)
clouds
b)
golden toads
c)
water
d)
plants
44.
Which of the following includes only biotic factors?
a)
ecosystem
b)
habitat
c)
biosphere
d)
population
45.
Which of the following is not included in a typical age structure diagram?
a)
the population's sex ratio
b)
the relative numbers of people in different age groups
c)
the population's historical growth
d)
the proportion of reproductive-aged individuals
46.
Which of the following terms describes seasonal movement of individuals into and out of a population?
a)
immigration
b)
emigration
c)
migration
d)
natality
47.
The largest population size a given environment can sustainably support is known as its
a)
limiting capacity.
b)
logistic limit.
c)
carrying capacity.
d)
biotic potential
48.
Catastrophic events like floods are _____ factors that affect population growth.
a)
density-dependent
b)
density-independent
49.
Exponential growth curves are generally _____ shaped.
a)
S
b)
J
c)
X
d)
L
50.
A population’s _____ describes how crowded it is.
a)
distribution
b)
size
c)
capacity
d)
biotic potential
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