Quiz about Chapter 4 Population Ecology Review

Question 1

The arrival of individuals from outside an area.

Accepted Answer

Immigration

Answer

Emigration

Answer

Migration

Answer

Carrying Capacity

Question 2

The largest population size that an
environment can sustainably support.

Accepted Answer

Carrying Capacity

Answer

Immigration

Answer

Emigration

Answer

Migration

Question 3

The proportion of males to females in a population.

Accepted Answer

Sex Ratio

Answer

Population

Answer

Population Distribution

Answer

Population Density

Question 4

Members of a species that live in the same area.

Accepted Answer

Population

Answer

Sex Ratio

Answer

Population Distribution

Answer

Population Density

Question 5

How organisms are arranged within an area.

Accepted Answer

Population Distribution

Answer

Population

Answer

Sex Ratio

Answer

Population Density

Question 6

The number of individuals within a population per unit area.

Accepted Answer

Population Density

Answer

Population

Answer

Sex Ratio

Answer

Population Distribution

Question 7

The specific environment in which an organism lives.

Accepted Answer

Habitat

Answer

Community

Answer

Population

Answer

Ecosystem

Question 8

A group of individuals that interbreed and produce fertile offspring.

Accepted Answer

Species

Answer

Habitat

Answer

Community

Answer

Ecosystem

Question 9

All the living things and their physical environments within a particular area.

Accepted Answer

Ecosystem

Answer

Habitat

Answer

Community

Answer

Population

Question 10

Characteristic of the environment that restricts population growth.

Accepted Answer

Limiting Factor

Answer

Sex Ratio

Answer

Carrying Capacity

Answer

Exponential Growth

Question 11

Occurs when a population increases by a fixed percentage each year.

Accepted Answer

Exponential Growth

Answer

Sex Ratio

Answer

Limiting Factor

Answer

Carrying Capacity

Question 12

Giraffes, lions, zebras, hyenas, and all the other living things of the Serengeti make up a(n)

Accepted Answer

community

Answer

ecosystem.

Answer

population

Answer

biosphere

Question 13

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

Accepted Answer

migration

Answer

immigration

Answer

emigration

Answer

population growth

Question 14

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?

Accepted Answer

sampling

Answer

direct observation

Answer

indirect observation

Answer

simply counting each one

Question 15

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

Accepted Answer

ecosystem.

Answer

population.

Answer

biosphere.

Answer

community.

Question 16

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

Accepted Answer

logistic growth.

Answer

limiting factors.

Answer

carrying capacity.

Answer

exponential growth.

Question 17

Pandas depend on bamboo. The amount of intact bamboo forest will help determine the

Accepted Answer

biotic potential of the population.

Answer

carrying capacity of the population.

Answer

sex ratio of the population.

Answer

limiting factor of the population.

Question 18

The graph above represents

Accepted Answer

exponential growth.

Answer

logistic growth.

Answer

carrying capacity.

Answer

limiting factors.

Question 19

Fish, cattails, frogs, water lilies, dragonflies, and all the other living things in a pond make up a(n)

Accepted Answer

community.

Answer

population.

Answer

ecosystem.

Answer

biosphere.

Question 20

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

Accepted Answer

resources.

Answer

biotic factors.

Answer

abiotic factors.

Answer

habitats.

Question 21

In a population of 100 monkeys, you count 48 males and 52 females. This population has an approximately even

Accepted Answer

sex ratio.

Answer

biotic potential.

Answer

survivorship curve.

Answer

carrying capacity.

Question 22

In the graph above, the population size is

Accepted Answer

undergoing cyclic change.

Answer

increasing.

Answer

decreasing.

Answer

remaining stable.

Question 23

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

Accepted Answer

habitat.

Answer

community.

Answer

population.

Answer

population structure.

Question 24

An example of a density-dependent limiting factor is

Accepted Answer

the amount of available food.

Answer

an avalanche.

Answer

a sudden flood.

Answer

a decrease in water due to drought.

Question 25

Many bird species are territorial. In territorial birds species, what kind of population structure would you expect?

Accepted Answer

uniform

Answer

random

Answer

clumped

Answer

aging

Question 26

The _____ is the simplest level of organization that the ecologist studies.

Accepted Answer

individual

Answer

community

Answer

ecosystem

Answer

population

Question 27

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.

Accepted Answer

increase

Answer

decrease

Answer

become extinct

Answer

fluctuate

Question 28

The diagram above shows a _____ distribution pattern.

Accepted Answer

random

Answer

clumped

Answer

uniform

Answer

cyclic

Question 29

The _____ is the most complex level of organization that an ecologist studies.

Accepted Answer

biosphere

Answer

ecosystem

Answer

community

Answer

individual

Question 30

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 ______.

Accepted Answer

sampling

Answer

direct observation

Answer

indirect observation

Answer

simply counting each one

Question 31

A forest fire that kills a large percentage of a pine beetle population is an example of a density-_____ factor that limits population.

Accepted Answer

independent

Answer

dependent

Question 32

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.

Accepted Answer

exponential

Answer

logistic

Answer

uniform

Answer

cyclic

Question 33

A dead tree is an example of a _____ in a forest ecosystem.

Accepted Answer

biotic factor

Answer

abiotic factor

Answer

nonessential factor

Answer

critical factor

Question 34

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?

Accepted Answer

Type III

Answer

Type I

Answer

Type II

Answer

Type IV

Question 35

In the age structure diagrams, which diagram represents a population that is likely to grow rapidly in the future?

Accepted Answer

A

Answer

B

Answer

C

Question 36

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?

Accepted Answer

C

Answer

A

Answer

B

Question 37

One of these populations has reached carrying capacity. Which one is it?

Accepted Answer

B

Answer

A

Answer

C

Question 38

An illustration of the Monteverde Cloud Forest is shown above. Which of the following is a biotic factor visible in the image?

Accepted Answer

plants

Answer

clouds

Answer

golden toads

Answer

water

Question 39

Which of the following includes only biotic factors?

Accepted Answer

population

Answer

ecosystem

Answer

habitat

Answer

biosphere

Question 40

Which of the following is not included in a typical age structure diagram?

Accepted Answer

the population's historical growth

Answer

the population's sex ratio

Answer

the relative numbers of people in different age groups

Answer

the proportion of reproductive-aged individuals

Question 41

Which of the following terms describes seasonal movement of individuals into and out of a population?

Accepted Answer

migration

Answer

immigration

Answer

emigration

Answer

natality

Question 42

The largest population size a given environment can sustainably support is known as its

Accepted Answer

carrying capacity.

Answer

limiting capacity.

Answer

logistic limit.

Answer

biotic potential

Question 43

Catastrophic events like floods are _____ factors that affect population growth.

Accepted Answer

density-independent

Answer

density-dependent

Question 44

Exponential growth curves are generally _____ shaped.

Accepted Answer

J

Answer

S

Answer

X

Answer

L

Question 45

All the populations in a particular area.

Accepted Answer

Community

Answer

Habitat

Answer

Population

Answer

Ecosystem

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