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Unit 8 Ecology Test

Total questions: 180

Worksheet time: 8hrs 33mins

Name
Class
Date
1.

If a scientist in New Zealand was studying how a group of herbivores interacted with a group of omnivores, and all of their abiotic surroundings, what level of ecology would she be studying?

a)

Community

b)

Population

c)

Species

d)

Ecosystem

e)

Biome

2.

If there are 100 KJ of energy available at the secondary consumer level, how many KJ of energy are available at the producer level?

a)

10 KJ

b)

1,000 KJ

c)

10,000 KJ

d)

1 KJ

3.

What is Ecology?

a)

It is the study of the Earth.

b)

It is the study of how organisms interact with each other and their environment.

c)

It is the study of recycling.

d)

It is the study of plants.

4.

Nonliving factors that affects an ecosystem are called...

a)

biotic factors

b)

abiotic factors

c)

food chain factors

d)

biome factors

5.

The tropical rain forest, the desert, and the tundra are all examples of ...

a)

the biopshere.

b)

biomes.

c)

ecosystems.

d)

communities.

6.

What are the ecological levels of organization from smallest to the largest?

a)

organism, population, community, ecosystem, biome, biosphere

b)

organism, community, population, ecosystem, biome, biosphere

c)

organism, population, community, biome, ecosystem, ecosphere.

d)

organism, community, population, biome, ecosystem, ecosphere

7.

What level of ecological organization do the animals represent?

a)

Species

b)

Population

c)

Community

d)

Ecosystem

8.

What level of ecological organization do the organisms represent?

a)

Species

b)

Population

c)

Community

d)

Ecosystem

9.

What level of ecological organization does the bird represent?

a)

Organism

b)

Population

c)

Community

d)

Ecosystem

10.

What level of ecological organization does this entire picture represent?

a)

Organism

b)

Population

c)

Community

d)

Ecosystem

11.

What is a population?

a)

One individual member of a species

b)

a group of individuals that belong to the same species and live in the same area

c)

all the different populations of species that live together in an area

d)

a community of species and the physical environment

12.

What are the abiotic factors in this image?

a)

water, sunlight, dirt

b)

birds, plants, predators

c)

water, plants, parasites

d)

oxygen, water, grasses

13.
Water temperature would be an example of ...
a)
a biotic factor.
b)
an abiotic factor.
14.
Abby is walking to school with her best friend Jaylyn. They begin talking about everything they see including the ash trees, grass, weeds, ants, and people. They also notice how cold it is, how there are several large puffy clouds out, and how the sun is just starting to come up.  What level of organization are they discussing?
a)
community
b)
ecosystem
c)
biome
d)
biosphere
15.
Antonio and Javier are astronauts in space looking back at Earth and discussing how all the life on Earth interacts with each other as well as the nonliving things. What level of organization are they discussing?
a)
A community
b)
A biome
c)
An ecosystem
d)
A biosphere
16.

Jacob is going out to his grandparents farm. On the farm is a stream that he likes to fish in. While he is fishing he sees many different species of fish as well as maple and oak trees and dragonflies. What Jacob is seeing is an example of what level of organization?

a)

organism

b)

population

c)

community

d)

ecosystem

17.

This is a single individual animal, plant or other living thing.

a)

Organism

b)

Community

c)

Population

d)

Ecosystem

18.

A group of organisms of the same species

that live in the same area

a)

Community

b)

Population

c)

Organism

d)

Biome

19.

All the populations that live and interact with each other in a particular place

a)

Biosphere

b)

Community

c)

Population

d)

Ecosystem

20.

The Biotic (living) and Abiotic (non-living) factors in a particular environment.

a)

Biosphere

b)

Population

c)

Community

d)

Ecosystem

21.

Sun

a)

Abiotic

b)

Biotic

22.

Soil

a)

Abiotic

b)

Biotic

23.

Water

a)

Abiotic

b)

Biotic

24.

This image depicts which organizational level of the environment?

a)

Community

b)

Population

c)

Organism

d)

Ecosystem

25.

This image depicts which organizational level of the environment?

a)

Organism

b)

Population

c)

Community

d)

Ecosystem

26.

This image depicts which organizational level of the environment?

a)

Ecosystem

b)

Population

c)

Community

d)

Biosphere

27.

A region of Earth that has a particular climate and certain types of plants.

a)

Biosphere

b)

Ecosystem

c)

Population

d)

Biome

28.

The part of the earth and atmosphere in which living things exist.

a)

Biome

b)

Biosphere

c)

Ecosystem

d)

Community

29.

Orangutan

a)

Abiotic

b)

Biotic

30.

Ginko Tree

a)

Abiotic

b)

Biotic

31.

Bacteria

a)

Abiotic

b)

Biotic

32.

Fungus

a)

Abiotic

b)

Biotic

33.
High biodiversity is 
a)
having a lot of the same organism.
b)
having a few of the same organism.
c)
having a lot of variety of different organisms.
d)
only having one of each organism. 
34.

Which ecosystem is more likely to survive a change in the environment?

a)

One with High biodiversity

b)

One with Low biodiversity

35.

Which shows more biodiversity Image A or Image B. Why?

a)

Image B is more biodiverse, because shows more different species than image A.

b)

Image A is more biodiverse, because shows a greater number of organisms that image B

c)

Both images show the same biodiversity

36.

In this food web example you can see that rain forests have many producers consumer and predators. How would you describe the rain forest biome?

a)

It has high biodiversity

b)

It has low biodiversity.

37.

A species form that supports an entire ecosystem.

a)

Keystone Species

b)

Herbivores

c)

Umbrella Species

d)

Predators

38.

What is a keystone species?

a)

A species that helps to hold an ecosystem together

b)

A species that lives in or around rocks

c)

Keys and stones have nothing to do with ecology

d)

A keystone isn't a living thing, it's just a stone

39.

What do the arrows represent in a food chain?

a)

Separation of trophic levels

b)

Flow of energy

c)

Transfer of matter

d)

Feeding niches

40.

A _____________makes it's own energy and starts a food chain.

a)

sun

b)

producer

c)

primary consumer

d)

decomposer

41.

The 10% rule states that only 10% of the available energy makes it from one trophic level to the next. If the producers have 100,000 kcals available how many kcals would be available to the primary consumers?

a)

10

b)

100

c)

1,000

d)

10,000

42.

Organisms that make their own food

a)

Producer

b)

Consumer

c)

Decomposer

43.

Organisms that obtain energy by feeding on other organisms

a)

Producer

b)

Consumer

c)

Decomposer

44.

Organisms that break down wastes and dead organisms and return the raw materials to the environment

a)

Producer

b)

Consumer

c)

Decomposer

45.

Consumers that eat only plants

a)

Carnivores

b)

Omnivores

c)

Herbivores

d)

Scavengers

46.

Consumers that eat only animals

a)

Carnivores

b)

Omnivores

c)

Herbivores

d)

Scavengers

47.

Consumers that eat both plants and animals

a)

Omnivores

b)

Carnivores

c)

Herbivores

d)

Scavengers

48.

A food _______ is a series of events in which one organism eats another and obtains energy.

a)

chain

b)

web

c)

pyramid

d)

plate

49.

A food _______ consists of many overlapping food ________.

a)

web, chains

b)

chain, webs

c)

pyramid, webs

d)

web, pyramids

50.

As you work your way up the energy pyramid, what happens to the energy?

a)

It increases

b)

It decreases

c)

It stays the same

d)

Nothing

51.

In the food web above, what eats the rabbit?

a)

Fox

b)

Hawk

c)

Vole

d)

Grass

52.

In the food web above, what organism is missing from this food chain:

Grass --> Slug --> ________ --> Hawk

a)

Vole

b)

Frog

c)

Insect

d)

Thrush

53.

In the energy pyramid, what is the bottom level composed of?

a)

Producers

b)

First-Level Consumers

c)

Second-Level Consumers

d)

Third-Level Consumers

54.

In the energy pyramid, what comes after the producers?

a)

Producers

b)

First-Level Consumers

c)

Second-Level Consumers

d)

Third-Level Consumers

55.
What type of organisms are the first step in a food chain?
a)
Consumers
b)
Predators
c)
Producers
56.
What does an energy pyramid represent?
a)
Food pyramids show the different food chains in a community.
b)
Energy pyramids show the same total matter at all levels.
c)
Shows the amount of energy available at each feeding level in an ecosystem.
57.
What is pictured in the diagram?
a)
A food web
b)
A food chain
c)
An energy pyramid
58.
Who is the top predator on this food web?
a)
Hawk
b)
Snake
c)
Frog
d)
Cattail
59.
What is an example of a decomposer?
a)
Plum
b)
Mushroom
c)
Deer
d)
Bird
60.

The initial source of energy for all ecosystems is...

a)

The Sun

b)

Photosynthesis

c)

Sugar

d)

There is no one source

61.

How much energy is available to be passed on to the next level in a food web?

a)

100%

b)

10%

c)

50%

d)

75%

62.

Which of the following would be the most likely effect, if there were a sudden increase in the cricket population?

a)

There would be a decrease in the small bird population.

b)

There would be a decrease in the grass/flowers population.

c)

There would be a decrease in the mice population.

d)

There would be an increase in the grass/flowers population.

63.
In this food chain, what will happen if the frogs become extinct?
a)
The snakes will increase.
b)
The grasshoppers will decrease.
c)
The eagles will remain the same.
d)
The grasshoppers will increase.
64.
How do producers obtain energy?
a)
They conduct photosynthesis.
b)
They consume plants.
c)
They consume primary consumers.
d)
They consume secondary consumers.
65.

What would happen if their were no producers?

a)

Every population would grow larger

b)

Everything would die out

c)

The animals would make their own food

66.
The diagram represents a pyramid of energy in an ecosystem.  Which level would most likely contain members of the plant kingdom?
a)
A
b)
B
c)
C
d)
D
67.

In this energy pyramid, the grasshopper would be classified as a:

a)

producer

b)

decomposer

c)

secondary consumer

d)

primary consumer

68.
Where does the energy start in this food chain?
a)
Plant
b)
Sun
c)
Deer
d)
Wolf
69.
What is the role of a producer?
a)
Use sunlight to make food
b)
Gain energy from eating other organisms
c)
Keep other species from overpopulating
d)
Breaking down dead stuff 
70.
What is a trophic level?
a)
Each level represented within a food chain or web.
b)
Levels of ecosystems that the world is divided into.
c)
Different levels of nutrients present within an organism.
d)
The levels of sunlight an autotroph needs to survive. 
71.
In the energy pyramid here, which organisms have the most energy available?
a)
Producers
b)
Carnivores
c)
Herbivores
d)
Top Predator
72.
In the energy pyramid here, how much of the energy in each level gets lost as heat or used by the organism for survival?
a)
80%
b)
90%
c)
10%
d)
20%
73.
A food pyramid represent the relative amount of energy in trophic levels. Which of the following correctly shows a food pyramid?
a)
A
b)
B
c)
C
d)
D
74.

Which trophic level has the least amount of energy?

a)

1

b)

2

c)

3

d)

4

75.
The owl receives energy from which organisms?
a)
grasshopper and mouse
b)
mouse and rabbit
c)
rabbit and butterfly
d)
butterfly and frog
76.
The krill is eaten by which consumer?
a)
blue whale
b)
phytoplankton
c)
leopard seal
d)
penguin
77.
What type of consumer is the shrew?
a)
herbivore
b)
omnivore
c)
carnivore
78.

All food webs and food chains begin with _________________.

a)

primary consumer

b)

producers

c)

secondary consumers

d)

tertiary consumers

79.
How many carnivores are shown in this food web?
a)
6
b)
4
c)
5
d)
3
80.

In an ecological pyramid, which type of organism always has the least amount of energy available?

a)

Producers

b)

Herbivores

c)

Carnivores

d)

Apex Predator

81.

If there are 100 Kcal of energy available in the producers, how much energy would be available in the primary consumers?

a)

10 Kcal

b)

1 Kcal

c)

100 Kcal

d)

1000 Kcal

82.
In this ecological pyramid which type of consumer gets only 10% of the energy stored in plants?
a)
Herbivore
b)
Carnivore
c)
Omnivore
d)
Secondary Consumer
83.

Which organism is the carnivore?

a)
b)
c)
d)
84.

Which organism do the owl and the weasel compete for in the food web?

a)

Hawk

b)

Spider

c)

Grasshopper

d)

Shrew

85.

Based on the image, which organism recieves the least amount of energy from the producer?

a)

Owl

b)

Grasshopper

c)

Lilypad

d)

Mouse

86.
In a food web, arrows point at:
a)
who gets energy.
b)
who gets eaten.
87.
An organism that eats the secondary consumer.
a)
Primary Consumer
b)
Secondary Consumer
c)
Tertiary Consumer
d)
Consumer
88.
Organisms which carry out the process of decomposition by breaking down dead or decaying organisms.
a)
Consumer
b)
Producer
c)
Decomposer
d)
Herbivore
89.
Who does the grasshopper get energy from? 
a)
Grass
b)
Grasshopper
c)
Mouse
d)
Ow
90.
What is this called?
a)
Food Web
b)
Food Chain
c)
Abiotic Factors
91.

How are primary consumers different from secondary consumers?

a)

Primary consumers eat only plants; secondary consumers eat other consumers.

b)

Primary consumers eat other consumers; secondary consumers eat only plants.

c)

Primary consumers eat plants and other consumers; secondary consumers eat plants and decompose matter.

d)

Primary consumers eat plants and decompose matter; secondary consumers eat plants and other consumers.

92.

A producer

a)

Eats grass

b)

Makes its own food

c)

Does not need food(energy)

d)

Is a primary consumer

93.

A primary consumer

a)

makes its own food

b)

eats other animals

c)

is a carnivore

d)

consumes the producer

94.

A secondary consumer

a)

Only eats meat

b)

Only eats plants

c)

makes its own food

d)

eats the primary consumer

95.

tertiary consumers

a)

Eat the primary consumer

b)

Eat plants and animals

c)

Consume the producer

d)

eat the secondary consumer

96.

A food chain shows more feeding relationships than a food web

a)

true

b)

false

97.

A carnivore eats plants and animals

a)

True

b)

False

98.

Humans are

a)

carnivores

b)

omnivores

c)

herbivores

d)

primary consumers

99.

Chemosynthesis is the process in which organisms

a)

form carbohydrates using chemicals.

b)

get energy by eating other organisms.

c)

use energy from the sun to form carbohydrates.

d)

make chemicals that absorb sunlight.

100.

A food chain contains oak trees (producer), mice (herbivore), black rat snakes (carnivore), and bald eagles (carnivore). How many trophic levels does this food chain have?

a)

four

b)

three

c)

two

d)

one

101.

Giant pandas eat bamboo almost exclusively. For this reason, giant pandas are an example of a(n)

a)

carnivore

b)

omnivore

c)

generalist

d)

specialist

102.

The temperature, rainfall, and soil/sand in an ecosystem would all qualify as

a)

a whole ecosystem

b)

abiotic factors

c)

biotic factors

d)

living things

103.

An ecosystem consists of

a)

the soil, water and weather.

b)

a community of organisms.

c)

energy.

d)

all of the above.

104.

A group of organisms of different species living together in a particular place is called a

A. community. C. biome.

B. population. D. habitat.

a)

biome

b)

population

c)

community

d)

habitat

105.
When humans burn fossil fuels, most of the carbon quickly enters the                       as carbon dioxide.
a)
Water
b)
Atmosphere
c)
Sun
d)
Air
106.
In the carbon cycle, producers take in the gas __
a)
carbon dioxide
b)
oxygen
c)
nitrogen
d)
carbon monoxide
107.

What converts nitrogen gas into a usable form for plants and animals?

a)

bacteria

b)

rain

c)

fungi

d)

car exhaust

108.

Organisms that need nitrogen to survive.

a)

only plants

b)

only animals

c)

only bacteria

d)

all living things

109.
Which of the following best explains why nitrogen fixation must take place?
a)
Atmospheric nitrogen is unusable to plants and animals
b)
Nitrogen must be returned to the atmosphere
c)
Animals must breathe in nitrogen
d)
Nitrogen gets "stuck" in the soil and must be untrapped
110.
What gas is released by plants from the process of photosynthesis?
a)
air
b)
carbon dioxide
c)
oxygen
d)
hydrogen
111.
Photosynthesis
a)
absorbs CO2
b)
releases CO2
112.

What is the process that converts nitrogen into a form that can be used by plants and animals?

a)
Combustion
b)
Photosynthesis
c)
Decomposition
d)
Nitrogen Fixation
113.

Which of the following explains the long term portion of the phosphorus cycle?

a)

Phosphorus is stored in rocks, and it is slowly recycled back into the ecosystem through weathering and erosion.

b)

Phosphorus is constantly cycled through the food chain starting at the producer level and working its way to the apex predator.

c)

Phosphorus does not have a long term portion.

d)

Phosphorus cannot be recycled and reused because it is a nonrenewable resource.

114.

Physical location where an organism lives

a)

Niche

b)

Habitat

c)

Ecosystem

d)

Adaptation

115.

Role filled by an organism in an ecosystem (How it makes its living)

a)

Habitat

b)

Niche

c)

Adaptation

d)

Environment

116.

Organism that is consumed by another organism

a)

Predator

b)

Herbivore

c)

Prey

d)

Producer

117.

Organism that hunts and consumes another organism

a)

Prey

b)

Scavenger

c)

Predator

d)

Omnivore

118.

The area where an organisms lives

a)

niche

b)

habitat

119.

The role an organisms has in an ecosystem

a)

niche

b)

habitat

120.

What is the niche of the oak tree?

a)

be a scavenger and eat dead animals

b)

be a producer and release oxygen

c)

be a primary consumer and eat producers

121.

Where is the polar bear's habitat?

a)

ocean

b)

forest

c)

tundra

122.

What is the jaguar's niche?

a)

be a primary consumer and eat producers

b)

be a producer and release oxygen

c)

be a tertiary consumer

123.

What is the mushroom's niche?

a)

be a primary consumer and eat producers

b)

be a tertiary consumer

c)

break down dead organisms

124.

A limiting factor is...

a)

where an organisms lives

b)

anything that keeps a population from growing

c)

the role and organism has

125.

Amount of food, water, living space, and oxygen are.....

a)

carrying capacity

b)

density-dependent limiting factors

c)

density-independent limiting factors

126.

Disease, competition, temperature, and natural disasters are ....

a)

carrying capacity

b)

density-dependent limiting factors

c)

density-independent limiting factors

127.

Predators keep a population from growing. Predators are...

a)

habitats

b)

limiting factors

c)

prey

128.

When the PREDATOR population INCREASES, the prey population....

a)

increases

b)

decreases

129.

When the PREY population DECREASES, the PREDATOR population....

a)

increases

b)

decreases

130.
When a specific population grows past the ecosystem's carrying capacity, what happens to the population?
a)
Density Independent limiting factors start to occur resulting in the population going farther above carrying capacity.
b)
Density Dependent limiting factors start to occur resulting in the population going back below carrying capacity.
c)
The population will go extinct due to lack of resources
d)
The population grows then finds a new carrying capacity
131.
What is the carrying capacity of the graph?
a)
around 500
b)
more than 500
c)
less than 500
d)
around 600
132.
What is the carrying capacity of the following graph?
a)
1000
b)
8000
c)
800
d)
600
133.

The total number of individuals that can survive in an habitat over time with the resources it has available.

a)
Carrying capacity
b)
Limiting factors
c)
Resources
d)
Population
134.
Excessive amounts of rain caused a flood in the southwest United States that resulted in substantial amounts of deaths in the rabbit population? This situation is an example of a density _____________ limiting factor.
a)
density-independent
b)
density-dependent
c)
density- too high
d)
density- too low
135.

Natural disasters can be considered limiting factors.

a)

true: density independent limiting factors

b)

false; natural disasters are not limiting factors

c)

true: density dependent limiting factors

d)

false: because Mrs. Burroughs said so

136.
Limiting factors which impact the size of a population no matter how large that population is.
a)
Density Independent Limiting Factors
b)
Density Dependent Limiting Factors
c)
Carrying Capacity
d)
Exponential Growth
137.
An environmental factor such as storms and extreme heat or cold that decrease a population are considered to be. 
a)
density- dependent factor
b)
population density
c)
dispersion
d)
density- independent factor
138.

A lion and a cheetah attempt to occupy the same niche. The more aggressive lion survives; the cheetah does not.

a)

Density-Dependent: Competition

b)

Density-Independent: Competition

c)

Density-Dependent: Predator-Prey

d)

Density-Independent: Predator-Prey

139.

Coyotes cross the winter pack ice and enter Newfoundland. The moose population starts to decline.

a)

Density-Dependent: Competition

b)

Density-Independent: Competition

c)

Density-Dependent: Predator-Prey

d)

Density-Independent: Predator-Prey

140.

A severe frost wipes out 50% of the coffee crop in Brazil.

a)

Density-Dependent

b)

Density-Independent

141.

Due to severe overcrowding in an Asian village, many children do not survive to reach adulthood.

a)

Density-Dependent: Disease

b)

Density-Independent: Disease

142.

A severe flood in the Red River Valley causes a decline in the deer population.

a)

Density-Dependent

b)

Density-Independent

143.
A relationship between two species where one benefits while the other is harmed.
a)
Mutualism
b)
Commensalism
c)
Parasitism
d)
Naturalism
144.
A frog eats a fly. The frog and fly are demonstrating ________.
a)
mutualism
b)
competition
c)
predator/prey
d)
parasitism
145.
A relationship between two organisms in which one organism benefits and the other is unharmed
a)
Mutualism 
b)
Competition
c)
Parasitsm 
d)
Commensalism 
146.
A relationship between two organisms in which both organisms benefit. 
a)
Mutualism 
b)
Competition
c)
Parasitsm 
d)
Commensalism 
147.
The crocodile and bird have a _______________ relationship.  The crocodile benefits by having its teeth cleaned.  The bird benefits by gaining food and protection.  Both animals benefit from this relationship.
a)
parasitism
b)
predator and prey
c)
mutualism
d)
commensalism
148.
_______ is when 2 or more species live in close association. 
a)
predation 
b)
competition 
c)
symbiosis 
d)
food web 
149.
Name the species interaction: A decorator crab camouflages itself with sponges. Sponges are unaffected. 
a)
competition 
b)
predation
c)
commensalism
d)
mutualism 
150.
Evidence shows that some grasses benefit from being grazed. Which of the following terms would best describe this plant-herbivore interaction?
a)
Mutualism
b)
Commensalism
c)
Parasitism
d)
Competition
151.

Competition between members of different species.

a)

intraspecific competition

b)

interspecific competition

152.

Competition among members of the same species.

a)

intraspecific competition

b)

interspecific competition

153.

A tick living on the body of a deer

a)

predation

b)

mutualism

c)

commensalism

d)

parasitism

154.

A bee eating the flower's nectar and picking up the flower's pollen

a)

predation

b)

mutualism

c)

commensalism

d)

parasitism

155.

A barnacle living on a whale's skin

a)

predation

b)

mutualism

c)

commensalism

d)

parasitism

156.

A tapeworm living in a person's intestines

a)

predation

b)

mutualism

c)

commensalism

d)

parasitism

157.
What factor describes when populations increase because animals are moving into a population?
a)
Emigration
b)
Limiting Factors
c)
Immigration
d)
Exponential Growth
158.
What factor describes when populations decrease because animals are moving out of a population?
a)
Emigration
b)
Limiting Factors
c)
Immigration
d)
Exponential Growth
159.
What does the graph represent?
a)
Emigration
b)
Exponential growth
c)
Immigration
d)
Logistic Growth
160.
Logistic growth has 3 phases. In Phase 1, the population grows rapidly. In Phase 2, population grows slowly. In Phase 3, growth stops. What causes growth to stop in the 3rd phase of logistic growth?
a)
Emigration
b)
Immigration
c)
Exponential Growth
d)
Carrying Capacity
161.
Which of the following will increase the size of a population?
a)
emigration and births
b)
immigration and deaths
c)
immigration and births
d)
emigration and deaths
162.
Which of the following statements about primary succession is true?
a)
It begins with a climax community
b)
Small mammals are the first to live there
c)
It begins with bare rock
d)
It begins with rock and soil
163.
What type of growth is shown on this graph?
a)
logistic
b)
exponential
c)
average
d)
density-independent
164.
What pattern of growth will a population with limited resources show?
a)
density-dependent
b)
exponential 
c)
logistic
d)
logical 
165.
What type of population growth is shown in the graph?  
a)
logistic growth
b)
logical growth
c)
exponential growth
d)
density-dependent growth
166.
A sequence of biotic changes that regenerate or create an ecological community is known as
a)
factors
b)
erosion
c)
succession
d)
progression
167.
Lichens and mosses that first live in uninhabited areas are examples of
a)
secondary species
b)
non-native species
c)
pioneer species
d)
climax species
168.
Secondary succession is most likely to occur
a)
on a volcanic island
b)
after a rainstorm
c)
after a Thanksgiving Turkey dinner
d)
after a forest fire
169.
 At what amount of yeast does the population in Figure 14.3 level off?
a)
3.0 mg/cc
b)
1.5 mg/cc
c)
6.0 mg/cc
d)
4.5 mg/cc
170.
 What is the name for this leveling off shown in the graph?
a)
logistic line
b)
carrying capacity
c)
climax point
d)
mediocre
171.
After how many hours does the yeast population shown in the graph reach its carrying capacity?
a)
15 hours
b)
10 hours
c)
6 hours
d)
At the start
172.
What is the amount of yeast shown in the graph at the 6-hour mark?
a)
6.0 mg/cc
b)
3.0 mg/cc
c)
1.5 mg/cc
d)
10 mg/cc
173.
What 2 factors decrease population size?
a)
Immigration, Births
b)
Emigration, Births
c)
Emigration, Deaths
d)
Immigration, Deaths
174.

Exponential population growth can be described as

a)

growth when resources are limited

b)

a j-shaped curve

c)

a s-shaped curve

d)

growth that reaches carrying capacity

175.

Logistic population growth can be described as

a)

growth when resources are limited

b)

a s-shaped curve

c)

reaching carrying capacity

d)

all of the above

176.

What do we call the first species that colonize a new area?

a)

Foreign Species

b)

Pioneer Species

c)

Intraspecies

d)

Interspecies

177.

Which of the following are examples of pioneer species? (select all that apply)

a)

Maple Tree

b)

Grass

c)

Lichens

d)

Moss

178.

Which type of succession occurs after some kind of natural disaster wipes out most of the vegetation in a habitat?

a)

Primary Succession

b)

Secondary Succession

179.

Which type of succession is quicker?

a)

Primary Sucession

b)

Secondary Succession

180.

Which type of succession occurs on freshly formed barren land which was previously uninhabited?

a)

Primary Succession

b)

Secondary Succession

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