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Ecosystems Unit Test Review

Total questions: 85

Worksheet time: 2hrs 37mins

Name
Class
Date
1.
Below is an example of a simple food chain.

Acorn → Squirrel → Fox → Mountain Lion 

What will most likely happen if squirrels are removed from the food chain?
a)
The fox will eat acorns
b)
The fox population will decrease
c)
The trees will produce fewer acorns.
d)
The mountain lion population will increase
2.
Which is an abiotic factor that would affect the growth of a population within an ecosystem?
a)
the availability of water
b)
the availability of producers
c)
the type of herbivores present
d)
the number of carnivores present
3.
In a forest ecosystem, a food chain might look like this:
green plants → rabbit → fox → panther

If the green plants are destroyed in a forest fire, which short-term effect will this have on the organisms in this food chain?
a)
There would be fewer rabbits for the foxes to eat. 
b)
The panthers would have to begin to eat green plants.
c)
There would be an increase in the fox population
d)
There would be more green plants for the rabbits to eat
4.
In the energy pyramid here, which organisms have the most energy available?
a)
Producers
b)
Carnivores
c)
Herbivores
d)
Top Predator
5.
In the energy pyramid below, which organism has the least amount of energy available?
a)
Producers
b)
Herbivores
c)
Carnivores
d)
Top Predator
6.
If there is 1000 Kcal available in the producers in trophic level 1, how much energy is available in the herbivores in trophic level 2?
a)
10 Kcal
b)
1 Kcal
c)
100 Kcal
d)
1000 Kcal
7.
This diagram shows the amount of energy that moves from one feeding level to another in a food web.
a)
Energy Pyramid
b)
Food Web
c)
Ecosystem
d)
Food Chain
8.
In the energy pyramid here, how much of the energy in the producers gets passed to the herbivores?
a)
10%
b)
20%
c)
80%
d)
90%
9.
If these organisms were arranged in a food pyramid, which organism would have the least amount of total energy available?
a)
coyote
b)
insect
c)
lizard
d)
shrub
10.
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
11.
Which organism recieves the least amount of energy from the producer?
a)
Owl
b)
Grasshopper
c)
Lilypad
d)
Mouse
12.
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
13.

What would happen to the bird if the green fish died out?

a)

the bird population would grow

b)

the bird population would die out

c)

the smaller fish will die out

14.

What does an energy pyramid show?

a)

Energy flow in a community

b)

Longest lifespans

c)

The stronger animal the higher it is on the pyramid

15.

All tertiary consumers are scavengers

a)

true

b)

false

16.

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

17.

What would happen if the primary consumers died out?

a)

the producers would grow and the secondary and tertiary consumers would die

b)

producers would die out

c)

consumers would grow

18.

decomposers are producers.

a)

true

b)

false

19.
True or False. In this Food Web Pyramid Which type of consumer gets only 10% of the energy stored in plants?
a)
Herbivore
b)
Carnivore
c)
Omnivore
d)
Secondary Consumer
20.
If only 10% of an organism's energy is available for the next trophic level, what happens with the other 90% of the energy?
a)
It is destroyed after it is used up.
b)
It is used for life processes or lost as body heat.
c)
It remains for the next trophic level IF the predator consumes ALL of the organism.
d)
It is lost completely as body heat. 
21.
What is the sun's role in the energy pyramid?
a)
to produce chemical energy for the ecosystem.
b)
to provide radiant energy for producers to convert to chemical energy. 
c)
to start the energy flow of the ecosystem. 
d)
to provide mechanical energy for producers to convert to chemical energy. 
22.
The diagram is intended to show relationships in an ecosystem. What do the arrows represent?
a)
The direction of population migration
b)
Differences in dietary habits
c)
Progressively smaller organisms
d)
The direction of the energy flow
23.
What is the ultimate ORIGINAL source of energy for living things
a)
Sugar
b)
Sun
c)
Moon
d)
Carbon Dioxide
24.
Eats other organisms
a)
producer
b)
trophic level
c)
autotroph
d)
consumer
25.
Eats dead organisms and returns nutrients to soil
a)
decomposer
b)
carnivore
c)
autotroph
d)
heterotroph
26.
Get their energy from the sun and make their own food. 
a)
Producer
b)
consumer
c)
decomposer
d)
photosyntheis
27.

Select all that are products of Photosynthesis.

a)

Water

b)

Carbon Dioxide

c)

Oxygen

d)

Sunlight (Light Energy)

e)

Glucose (Sugar/food)

28.

Select all that are raw materials for Photosynthesis.

a)

Water

b)

Carbon Dioxide

c)

Oxygen

d)

Sunlight (Light Energy)

e)

Glucose (Sugar/food)

29.

How many raw materials (ingredients) does photosynthesis require?

a)

1

b)

2

c)

3

d)

4

30.

How many products are produced during photosynthesis?

a)

1

b)

2

c)

3

d)

4

31.
What do plants give off after photosynthesis?
a)
Oxygen
b)
carbon
c)
nitrogen
d)
hydrogen
32.
Which statement about photosynthesis is correct?
a)
Plants get the energy they need for photosynthesis from water.
b)
Plants get the energy they need for photosynthesis from soil.
c)
Plants get the energy they need for photosynthesis from sunlight.
d)
Plants do not require energy to perform photosynthesis.
33.
Who does the owl get energy from? 
a)
Grass
b)
Grasshopper
c)
Mouse
d)
Ow
34.
Who is the producer in this food chain? 
a)
Grass
b)
Grasshopper
c)
Mouse
d)
Ow
35.
Who does the grasshopper get energy from? 
a)
Grass
b)
Grasshopper
c)
Mouse
d)
Ow
36.

How is a food web different from a food chain?

a)

Food webs contain only producers, not consumers.

b)

Food webs do not include decomposers.

c)

Food webs contain many different, linked food chains.

d)

Food webs exist in aquatic environments; food chains exist in terrestrial environments.

37.

Which of the following is a producer?

a)
b)
c)
d)
38.

How might a lack of sunlight disrupt the food web?

a)

It would cause consumers to consume less.

b)

It would prevent decomposers from decomposing matter

c)

It would prevent producers from producing nutrients.

d)

It would not disrupt the food web at all.

39.

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.

40.

This organism is most likely

a)

A primary consumer

b)

A secondary consumer

c)

A decomposer

d)

A producer

41.

Sheep are herbivorous. What can you infer from this?

a)

They are primary consumers.

b)

They are producers.

c)

They are secondary consumers.

d)

They are decomposers.

42.
Where does the energy start in this food chain?
a)
Plant
b)
Sun
c)
Deer
d)
Wolf
43.
Which food chain is in the correct order?
a)
cat, grass, bird, snail
b)
bird, snail, grass, cat
c)
grass, snail, bird, cat
d)
grass, cat, bird, snail
44.
Which of these organisms would receive energy from the snake?
a)
Plant
b)
Rabbit
c)
Mouse
d)
Hawk
45.
Which level of organization is the most complex?
a)
organism
b)
population
c)
community
d)
ecosystem
46.
Multiple organisms of the same species describes a
a)
organism
b)
population
c)
community
d)
ecosystem
47.
What do ecosystems have that the other three levels of organization do not have?
a)
living things
b)
biotic factors
c)
abiotic factors
d)
organisms
48.
A forest full of many kinds of trees and grasses is an example of a
a)
group
b)
organism
c)
population
d)
community
49.
Which is an example of an organism?
a)
a beetle
b)
a lake
c)
a rock
d)
a shell
50.
Which level of organization is more complex than a population and less complex than an ecosystem?
a)
organism
b)
population
c)
community
d)
ecosystem
51.
Which is an example of a population?
a)
different kinds of bacteria
b)
A group of fish and sharks
c)
deer, bear, and rabbits
d)
A herd of cattle
52.
which is the correct order of the levels of organization from simple to complex?
a)
organism, population, community, ecosystem
b)
ecosystem, community, population, organism
53.
Which of the following is a population?
a)
an elephant
b)
a forest
c)
the savannah
d)
pack of wolves
54.
Which of the following is a ecosystem?
a)
an elephant
b)
a pond
c)
an insect
d)
pack of wolves
55.
The entire Earth including all living things and anything that will impact life is known as the ___________.
a)
Biome
b)
Biosphere
c)
Community
d)
Ecosystem
56.
Wind is part of what sphere of Earth?
a)
Windosphere
b)
Atmosphere
c)
Hydrosphere
d)
Airosphere
57.
The Four Spheres of Earth
a)
are all connected
b)
have nothing to do with one another
c)
exist on Venus and Mars
d)
don't affect human life
58.
This picture shows
a)
Atmosphere
b)
Biosphere
c)
Hydrosphere
d)
Geosphere
59.
All living things on earth are part of the....
a)
Biosphere
b)
Lithosphere
c)
Hydrosphere
d)
Atmosphere
60.
Oceans, rain, and glaciers belong to this sphere.
a)
Atmosphere
b)
Biosphere 
c)
Lithosphere
d)
Hydrosphere
61.
Body of air surrounding our planet. 
a)
Hydrosphere 
b)
Biosphere 
c)
Atmosphere 
d)
Geosphere 
62.

This sphere includes the continents, the ocean floor, all the rocks on the surface, and all of the sand in the deserts.

a)

Hydrosphere

b)

Biosphere

c)

Atmosphere

d)

Lithosphere

63.
Bio = 
a)
Earth
b)
Sphere
c)
Life
d)
Water
64.
Consumers that eat both plants and animals are called ____________________.
a)
Omnivores
b)
Herbivores
c)
Carnivores
d)
Scavengers
65.
Vultures, which feed on the bodies of dead organisms, are _____________________.
a)
First-level organisms
b)
Scavengers
c)
Producers
d)
Herbivores
66.
Which best summarizes the order of energy flow in a food chain?
a)
Sun to decomposers to producers to consumers
b)
Sun to consumers to decomposers to producers
c)
Sun to producers to consumers to decomposers
d)
Sun to producers to decomposers to consumers
67.
Which of the following lists consists of only biotic parts and an environment?
a)
Soil, leaves, cats, and flowers
b)
Fish, rocks, and salt water
c)
Rocks, leaves, and water
d)
Crickets, tulips, and tadpoles
68.

Which is a list of the abiotic parts of an environment?

a)

Soil, leaves, and flowers

b)

Dirt, rocks, and water

c)

Rocks, leaves, and water

d)

Water, rocks, and tadpoles

69.
As matter and energy move from grass to grasshoppers, the amount of energy ___________________.
a)
Decreases
b)
Increases
c)
Decreases, then increases
d)
Increases or decreases, but the population size stays the same
70.
It is important to protect abiotic factors like the soil and air from contamination because _______________.
a)
They affect other abiotic factors.
b)
They affect other biotic factors.
c)
They affect other abiotic and biotic factors.
d)
It is not important to protect abiotic factors, because they are not alive.
71.
What is formed during primary succession that doesn't need to be formed during secondary succession?
a)
pioneer species
b)
soil
c)
climax community
d)
lichens
72.
What type of succession is shown going from figure A to figure B?
a)
primary succession
b)
eutrophication
c)
secondary succession
d)
intermediate
73.
After a forest fire, an ecosystem would start regrowth through -
a)
primary succession
b)
secondary succession
c)
climax community
d)
limiting factors
74.

Breaking News! A new island has formed off of Hawaii! What must occur for it to become an ecosystem?

a)

Secondary Succession

b)

Aquatic succession

c)

Primary Succession

d)

Ferns must grow

75.
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
d)
Lichens convert carbohydrates into fossil fuels.
76.

After a volcanic eruption, lava covers the land. What is the order that plants grow to repopulate the area?

a)

Lichens → Shrubs → Grasses → Trees

b)

Lichens → tree → shrubs→Grasses

c)

Grasses → Lichens → Shrubs → Trees

d)

Lichens → Grasses → Shrubs → Trees

77.
Which of the following symbiotic relationships is considered parasitic?
a)
Ticks feeding on a dog
b)
Bees transporting pollen from flowers
c)
Pilotfish swimming under sharks
d)
Birds eating the insects fromo the back of hippo
78.
A close long term association between 2 or more species
a)
Mutualism
b)
Commensalism
c)
Symbiosis
d)
Parasitism
79.
Relationship where both organism benefit
a)
Competition
b)
Commensalism
c)
Mutualism
d)
Parasitism
80.
Relationship where one organism benefits and the other is neither harmed nor helped
a)
Commensalism
b)
Parasitism
c)
Mutualism
d)
Competition
81.

A relationship where one organism benefits and another is harmed

a)

Commensalism

b)

Parasitism

c)

Mutualism

d)

Competition

82.
A tapeworm and a cat have this type of relationship.
a)
mutualism
b)
parasitism
c)
commensalism
d)
competition
83.
 Hummingbirds feed on nectar from flowers.  The flowers are pollinated by hummingbirds as they move from flower to flower. What type of symbiosis is this?
a)
commensalism
b)
mutualism
c)
parasitism
d)
predation
84.
The first species to move into a forming ecosystem. Mosses and small grasses are examples. 
a)
Pioneer
b)
Opportunistic
c)
Climax community
d)
Primary
85.
_______________ succession occurs after a catastrophic event destroys an area.
a)
Primary
b)
Opportunistic
c)
Climax 
d)
Secondary

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