Populations Test

by JENNIFER EWBANK

| 45 QuestionsNote from the author:

Population Ecology

1

1 pt

If the number of births in a population is the same as the number of deaths in a population, what will happen to the growth of the population?

It will increase

It will decease

It will stay the same

It will fluctuate

2

1 pt

If the number of births is greater than the number of deaths in a population, what will happen to the growth of the population?

It will increase

It will decrease

It will stay the same

It will fluctuate

3

1 pt

What growth pattern describes a population who's growth rate slows or stops following a period of exponential growth?

logistic growth

population growth

exponential growth

predator-prey cycle

4

1 pt

What type of growth is shown in the diagram? "look on board"

exponential growth

logistic growth

predator-prey cycle

boom-bust curve

5

1 pt

Largest number of individuals of a population that the enviroment can support....

carrying capacity

population crash

lag phase

mutualism

6

1 pt

Which type of growth is best illustated by this rabbit population? "look on board"

exponential

logisitic

S-shaped

predator-prey

7

1 pt

What is the carrying capacity for this sheep population? "look on board"

2.0 million

1.5 million

1million

.5 million

8

1 pt

What point on the graph represents the carrying capacity? "look on board"

A

B

C

D

9

1 pt

When a population grows past the ecosystem's carrying capacity, what happens to the population?

Continues to grow

The population starts to die off to return to carrying capacity

The population will go extinct due to lack of recources

the population grows then finds a new carrying capacity

10

1 pt

Food, water, sunlight, shelter, and space are resources that are often________.

limiting factors

wet

messy

found in rocks

11

1 pt

If there is less food than usual in an ecosystem, then the population will most likley....

stay the same

decrease

increase

12

1 pt

Anything or organism that regulates the size of a population of another organism is known as ______?

a limiting measure

a limiting factor

factorization

materlialization

13

1 pt

In a forest ecosystem, which of the following is the best example of a limiting factor for a rabbit population?

squirrel population

sunlight

grass available

14

1 pt

Will competition increase/decrease the carrying capacity of an ecosystem for the animal in competition?

decrease

increase

15

1 pt

Natural disaster can be considered limiting factors

true

false

16

1 pt

Natural disasters and weather patterns like earthquakes, floods, and tornadoes, blizzards, and heatwaves are considered ______ ______ limiting factors

Density-dependent

Density-independent

17

1 pt

Competition, disease, predation, and parasitism are considered _____ _____ limiting factors

Density-dependent

Density-independent

18

1 pt

Density-dependent limiting factors have a(n) _________ affect on populations depending on the density of the population.

similar

different

19

1 pt

Density-independent limiting factors have a(n) ________ affect on poulations regardless of population density.

similar

different

20

1 pt

Exponetial growth is representative of a population in a enviroment with _______ recources.

limited

unlimited

21

1 pt

Logisitc growth is representative of a population in an envirement with _______ recources.

limited

unlimited

22

1 pt

A factor that is NOT one of the factors of population growth rate is:

A. immigration

B. death rate

C. emigration

D. demography

23

1 pt

There are 2000 Hydrilla verticilla species per square kilometer in a certain area of a body of water. To which population characteric does this information refer?

A. growth rate

B. geographic distribution

C. age structure

D. population density

24

1 pt

What does the population density tell you that population distribution does not?

A. numbers of individuals that live in an area

B. an area inhabited by a population

C. births that occur per unit of area

D. deaths that occur per unit of area

25

1 pt

A small farming community in Florida covers 17 square kilometers. There are 680 individuals who live within the town limits. What is the population density of this community?

A. 0.05 individuals per square kilometer

B. 40 individuals per square kilometer

C. 120 individuals per square kilometer

D. 9.5 individuals per square kilometer

26

1 pt

Organisms moving into an area from another area , is called

A. immigration

B. emigration

C. population control

D. carrying capacity

27

1 pt

If organisms move out of an area, this is known as

A. emigration

B. abandonment

C. immigration

D. carrying capacity

28

1 pt

In a population that grows, what is happening?

A. the birth rate gets higher than the death rate

B. the birth rate is constant and the death rate increases

C. the birth gets lower than the death rate

D. the birthrate and the death rate remain contant

29

1 pt

In a population that decreases the following is happening :

A. the birthrate and the death rate remain equal

B. the death rate gets lower than the birthrate

C. the death rate stays the same and the birth rate increases

D. the death rate gets higher than the birthrate

30

1 pt

The phases that most populations go through are represented on a(an)

A. logistic growth curve

B. exponential growth curve

C. population curve

D. normal curve

31

1 pt

When resources in a population become less available, the population growth

A. tends to decrease rapidly

B. tends to increase slowly

C. tends to reach carrying capacity

D. a phase of exponential growth occurs

32

1 pt

As the exponential phase of a logistic growth curve of a population stops,

A. the population size drops

B. the population size stays the same

C. population growth starts to slow down

D. population growth starts to speed up

33

1 pt

What levels of ecological organization have only biotic factors?

ecosystem, biome, biosphere

individual, population, community

population, ecosystem

biome, biosphere

34

1 pt

What ecological organization have both biotic and abiotic factors?

ecosystem, biome, biosphere

individual, population, community

population, ecosystem

biome, biosphere

35

1 pt

All the members of the same species living in the same area at the same time is called?

individuals

populations

community

ecosystem

36

1 pt

Would all the alligators, frogs, plants, algae, fish, bacteria, etc. living in the St. Johns River be >>>>>

individual

population

community

ecosystem

37

1 pt

This number represents the number of individuals within a population per unit? Calculated by dividing the number of individuals per area.

population distribution

population growth

population density

38

1 pt

What describes how organisms are arranged within an area?

population distribution

population growth

population density

39

1 pt

What will happen to a population that has mostly old individuals?

increase

stay the same

decrease

40

1 pt

What is the most common population distribution?

Random

Uniform

Clumped

none of the above

41

1 pt

Calulate the population growth of frogs; with a natality rate of 20, mortality rate of 30, immigration rate of 5, and emigration rate of 10?

15

-15

30

-30

42

1 pt

What type of curve is logistic population growth?

J curve

S curve

43

1 pt

What type of curve is expontential population growth?

J curve

S curve

44

1 pt

Factors that limit the population from growing is ?

density independent factors

limiting factors

biomes

carrying capacity

45

1 pt

The largest population size an environment can sustain is called?

density independent factors

limiting factors

biomes

carrying capacity

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