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HMH Unit 4 Review

Total questions: 92

Worksheet time: 2hrs 36mins

Name
Class
Date
1.

Under ideal conditions with unlimited resources, a population will grow _________________.

a)

diversely

b)

expectantly

c)

density

d)

exponentially

2.

Choose 2 density-dependent limiting factors:

a)

competition

b)

unusual weather

c)

parasitism

d)

natural disasters

3.

Choose 2 density-independent limiting factors:

a)

competition

b)

unusual weather

c)

parasitism

d)

natural disasters

4.

Carrying capacity

a)

the maximum population growth rate under ideal conditions

b)

the change in the population size per individual per unit time

c)

the maximum population size that can be supported by an ecosystem.

d)

the members of a species that live in an ecosystem and have the potential to reproduce.

5.

Succession that occurs in an area with no soil

a)

ecological succession

b)

primary succession

c)

secondary succession

d)

pioneer species

6.
As a population grows, it will most likely stop growing at what size?
a)
Growth limit
b)
Exponential limit
c)
Carrying Capacity
d)
It won't stop growing
7.
The carrying capacity of an environment for a particular species at a particular time is determined by the
a)
number of individuals in the species.
b)
distribution of the population.
c)
reproductive potential of the species.
d)
supply of the most limited resources
8.

The first organisms that appear in an ecological community

a)

ecological succession

b)

primary succession

c)

secondary succession

d)

pioneer speciles

9.
The process of change in the living parts of the ecosystem 
a)
ecological succession 
b)
primary succession 
c)
climax community
d)
pioneer species
10.
What will happen to the population when the death rate is larger than the birth rate?
a)
grow
b)
shrink
c)
stay the same
d)
None of these
11.
How do lichens contribute to primary succession?
a)
Lichens decompose organic matter from animals and plants
b)
Lichens begin to break down rock to form soil
c)
Lichens are nitrogen fixing bacteria
12.

A population is...

a)

A group of the same species living in the same area

b)

Multiple species that live in one area

c)

All of the living and nonliving things in an area

d)

None of these

13.

The picture shows what type of succession?

a)

primary

b)

secondary

c)

tertiary

d)

quadanary

14.
The final stable community of plants and animals is called:
a)
pioneer community
b)
farmland
c)
climax community
d)
old field
15.
Biodiversity is the variety of ________ in a community.
a)
genes
b)
population
c)
species
d)
community
16.
Which kind of growth does the human population follow? It is described as a J-shaped curve.
a)
Exponential Growth
b)
Logistic Growth
c)
Outstanding Growth
d)
Minimal Growth
17.

Starts with bare rock followed by lichen

a)

primary succession

b)

secondary succession

c)

both types of succession

18.

What does the graph represent?

a)

Emigration

b)

Exponential growth

c)

Immigration

d)

Logistic Growth

19.

Population size decreases due to organisms moving out of a population.

a)

Emigration

b)

Limiting Factors

c)

Immigration

d)

Exponential Growth

20.

The picture shows what type of succession?

a)

primary

b)

secondary

c)

tertiary

d)

quadanary

21.

An environmental factor such as storms and extreme heat or cold that affects all populations regardless of their size.

a)

density- dependent factor

b)

population density

c)

dispersion

d)

density- independent factor

22.
What type of succession is shown going from figure A to figure B?
a)
primary succession
b)
eutrophication
c)
secondary succession
d)
intermediate
23.

What is Density-dependent factor?

a)

All the inhabitants of a particular town, area, or country.

b)

A measurement of population per unit area or unit volume; it is a quantity of type number density.

c)

The number of people, other living organisms, or crops that a region can support without environmental degradation.

d)

factors whose effects on the size or growth of the population vary with the population density.

24.

What is Density-independent factor?

a)

Selection occurring when a population is at or near the carrying capacity of the environment. Slow maturation, slow reproduction, slow population growth

b)

affects all populations regardless of their size

c)

Species that adapt to unstable and unpredictable environment. rapid growth, short life span, and population growth.

25.

What is an abiotic factor?

a)

nonliving condition or thing, such as climate or habitat, that influences or affects an ecosystem and the organisms in it

b)

living components of an ecosystem

c)

the process by which the structure of a biological community evolves over time

d)

organisms that can make their own energy through biochemical processes

26.

What is Biotic factor?

a)

nonliving condition or thing

b)

living components of an ecosystem

c)

the process by which the structure of a biological community evolves over time

d)

organisms that can make their own energy through biochemical processes

27.

What is Succession?

a)

A nonliving condition or thing, as climate or habitat, that influences or affects an ecosystem and the organisms in it

b)

living components of an ecosystem. They are sorted into three groups: producers or autotrophs, consumers or heterotrophs, and decomposers or detritivores.

c)

the process by which the structure of a biological community evolves over time. Two different types of succession—primary and secondary—have been distinguished

d)

organisms that can make their own energy through biochemical processes, which are just processes in living things that involve chemical reactions.

28.

What is Producer?

a)

nonliving condition or thing, as climate or habitat, that influences or affects an ecosystem and the organisms in it

b)

living components of an ecosystem. They are sorted into three groups: producers or autotrophs, consumers or heterotrophs, and decomposers or detritivores.

c)

process by which the structure of a biological community evolves over time. Two different types of succession—primary and secondary—have been distinguished

d)

organisms that can make their own energy through biochemical processes, which are just processes in living things that involve chemical reactions.

29.

What is Consumer ?

a)

organisms that get their energy from eating other organisms

b)

organisms that make their own food

30.

The number of individuals per unit area

a)

Population distribution

b)

Population density

c)

Survivorship type 1

d)

Survivorship type 2

31.
Organisms that have heavy predation usually use this means for population dispersion.
a)
clumped
b)
uniform
c)
random
d)
 v-formation
32.

Large mammals show this type of survivorship?

a)

Type 1

b)

Type 2

c)

Type 3

d)

Type 4

33.

Organisms that have a high birth rate, but do not have many young that survive to adulthood represent which type of survivorship curve?

a)

Type 1

b)

Type 2

c)

Type 3

d)

None of the above

34.
What are the problems associated with an area of densely populated individuals.?
a)
Disease spreads more quickly
b)
Competition for food may be higher
c)
Competition for space may be higher
d)
All of the above
35.

A group of individuals that interbreed and produce fertile offspring

a)

individual

b)

species

c)

population

d)

community

36.

All of the populations in the same area are called _________?

a)

biosphere

b)

ecosystem

c)

community

d)

population

e)

organism

37.

Describes the number of individuals within a population per unit area.

a)

population

b)

population size

c)

population density

d)

population distribution

38.

Describes how organisms are arranged within an area.

a)

population

b)

population size

c)

population density

d)

population distribution

39.

The departure of individuals from a given area.

a)

immigration

b)

emigration

c)

migration

d)

mitigation

40.
Consumer that eats plants
a)
heterotroph
b)
herbivore
c)
producer
d)
community
41.

The variety of all living things.

a)

biome

b)

niche

c)

biodiversity

d)

species

42.

An environmental factor such as predation, disease, and competition that depends on the number of members in a population.

a)

dispersion

b)

density- independent factor

c)

density- dependent factor

d)

population growth rate

43.

An environmental factor such as storms and extreme heat or cold that affects populations regardless of their density.

a)

density- dependent factor

b)

population density

c)

dispersion

d)

density- independent factor

44.
Any factor that limits population growth
a)
Limiting Factor
b)
Immigration
c)
Succession
d)
Abiotic Factor
45.
One reason predators might increase is
a)
The weather is warmer
b)
Parasites have increased
c)
The prey have increased
d)
Food has decreased
46.

How do predator prey relationships affect a population?

a)

They are in competition with each other

b)

One will go extinct

c)

Predators have exponential growth

d)

Controls size of both populations

47.

When a population has reached carrying capacity

a)

growth & immigration are equal to death & emigration

b)

growth & immigration are less than death & emigration

c)

growth & immigration are greater than death & emigration

d)

Growth is exponential

48.

Why are few plants found on the bottom floor of the ocean?

a)

ocean floor has decomposers

b)

sunlight doesn't reach the floor

c)

water is a limiting factor

d)

temperature is low

49.
As a population grows, it will most likely stop growing at what size?
a)
Growth limit
b)
Exponential limit
c)
Carrying Capacity
d)
It won't stop growing
50.

What would human alterations of the environment be considered? Ex. Cutting down the rain forests

a)

Density-independent

b)

Density-dependent

51.

What type of growth model would represent the unrestricted growth of bacteria?

a)

exponential

b)

logistical

c)

S-curve

d)

J-curve

52.

What type of spatial dispersion would dandelion seeds have?

a)

Clumped

b)

Random

c)

Uniform

53.

What type of limiting factor would a change in the number of predators be classified as?

a)

Density-independent

b)

Density-dependent

54.

An Earthquake-related tsunami would be what type of limiting factor?

a)

Density-independent

b)

Density-dependent

55.

When a population reaches its carrying capacity______.

a)

The birth rate is greater than the death rate

b)

The birth rate is less than the death rate

c)

The birth rate and death rate flucuate around the same amount

56.

What year is the zebra population the highest?

a)

1920

b)

2000

c)

1960

d)

2020

57.

What year is the lion population the highest?

a)

1920

b)

1990

c)

2000

d)

2020

58.

Which statement sounds accurate based on the graph data?

a)

The zebra and lions do not affect each other.

b)

As the lions population increases, so does the zebra population.

c)

The zebra population increases first and then the lion population increases.

d)

As the zebra populations decreases, the lion population goes up.

59.

What is the carrying capacity of this graph?

a)

530

b)

400

c)

500

d)

480

60.

What type of growth is happening at the A on the graph?

a)

logistic

b)

exponential

c)

standard

d)

Increasing

61.

According to the graph, what is causing the deer population to decrease?

a)

They got sick.

b)

The wolf population is decreasing.

c)

The wolf population increased.

d)

Nothing, it's a coincidence.

62.
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?
a)
It will increase.
b)
It will decrease.
c)
It will stay the same.
d)
It will fluctuate.
63.
If the number of births is greater than the number of deaths in a population, what will happen to the growth of the population?
a)
It will increase.
b)
It will decrease.
c)
It will stay the same.
d)
It will fluctuate.
64.
What is the carrying capacity for this sheep population?
a)
1.8 million
b)
1.25 million
c)
1.6 million
d)
1.o million
65.

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

a)

The population continues to grow.

b)

The population starts to die off to return to carrying capacity.

c)

The population will go extinct due to lack of resources.

d)

The population grows until a new carrying capacity is reached.

66.
Natural disasters and weather patterns like earthquakes, floods, and tornadoes, blizzards, and heatwaves are considered ___________ ____________ limiting factors
a)
Density-dependent
b)
Density-independent
67.
Competition, disease, predation, and parasitism are considered ___________ ____________ limiting factors
a)
Density-dependent
b)
Density-independent
68.
Which of the following is a density-independent limiting factor?
a)
disease
b)
emigration
c)
earthquake
d)
parasitism
69.

What type of population dispersion is shown?

a)

random

b)

clumped

c)

uniform

70.

What type of population dispersion is shown?

a)

uniform

b)

clumped

c)

random

71.
What factor describes when populations increase because animals are moving into a population?
a)
Emigration
b)
Limiting Factors
c)
Immigration
d)
Exponential Growth
72.

What point on the graph represents the carrying capacity?

a)

A

b)

B

c)

C

d)

D

73.
No two species can occupy the same niche
a)
Competitive Exclusion Principle 
b)
Limiting Exclusion Theory
c)
Competitive Limiting Principle
d)
Limiting Competitive Theory 
74.
Which of the following is NOT a density-dependent limiting factor?
a)
flood
b)
disease
c)
predation
d)
competition
75.
All of the following are limiting factors EXCEPT
a)
immigration
b)
competition
c)
drought
d)
predation
76.
Which would be least likely to be affected by a density-dependent limiting factor?
a)
a population with a high immigration rate
b)
A large, dense population
c)
a small, scattered population
d)
a population with a high birthrate
77.
If a population grows larger than the carrying capacity of the environment, the
a)
death rate may rise
b)
birth rate may rise
c)
death rate must fall
d)
birth rate must fall
78.
Food, predators, mates are examples of _______ factors.
a)
biotic
b)
abiotic
79.
Temperature, sunlight, and water are examples of _______ factors.
a)
biotic
b)
abiotic
80.
Which kind of distribution is #1?
a)
clumped
b)
random
c)
uniform
81.

The ability of an ecosystem to recover after it has undergone a disturbance

a)

resilience

b)

resistance

c)

population dynamics

d)

dispersion

82.

Ability of an ecosystem to resist change from a disturbance

a)

resilience

b)

resistance

c)

population dynamics

d)

dispersion

83.

Which of these is not an example of symbiosis?

a)

mutualism

b)

commensalism

c)

parasitism

d)

competition

84.

Which of these often describes an ecosystem with high biodiversity?

a)

limited species variety

b)

susceptible to disease

c)

resilient and stable

d)

challenging to survival

85.

A species has an especially strong effect on an ecosystem.

a)

keystone species

b)

primary consumer

c)

ecological niche

d)

symbiosis

86.

As bees are taking nectar from flowers, they are also pollinating the flowers.

a)

commensalism

b)

mutualism

c)

parasitism

d)

competition

87.

One organism benefits and the other organism is neither helped nor harmed.

a)

commensalism

b)

mutualism

c)

parasitism

88.

A tick that feeds on the blood of mammals.

a)

commensalism

b)

mutualism

c)

parasitism

89.

One organisms captures and feeds upon another organism.

a)

commensalism

b)

parasitism

c)

predation

d)

mutualism

90.

Two organisms compete for the same limited resources

a)

predation

b)

collaboration

c)

parasitism

d)

competition

91.

If a disease destroying barley plants swept through an ecosystem, what would happen to the bird population that eat barley plants?

a)

The bird population would stay the same

b)

The bird population would infinitely increase

c)

The bird population would decrease

92.
In a forest ecosystem, which of the following is the best example of a limiting factor for a rabbit population?
a)
Squirrel Population
b)
Sunlight
c)
Grass available

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