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5.12B Food Webs

Total questions: 128

Worksheet time: 3hrs 3mins

Name
Class
Date
1.

What is the original source of Energy in a food web?

a)

Decomposers (Bacteria and Fungi)

b)

Producers (Plants)

c)

Consumers (Animals)

d)

Sun

2.

Which of the following gets it's energy directly from a producer?

a)

Sun

b)

Plants

c)

Deer

d)

Snake

3.

The diagram shows a prairie food web. In the food web shown, all of the following are consumers EXCEPT –

a)

Prairie Grass

b)

Mountain Lion

c)

Squirrel

d)

Robin

4.

Decomposers like mushrooms get energy by –

a)

producing their own food

b)

eating grass, fruit, and seeds

c)

breaking down dead organisms

d)

absorbing carbon dioxide from the air

5.

In the food web diagram, what do the arrows represent?

a)

Life Cycle

b)

Metamorphosis

c)

How food is produced by organisms

d)

The flow of energy through an ecosystem

6.

Green plants are producers that begin the flow of energy between organisms in a food web when they-

a)

reproduce by generating seeds

b)

absorb water and nutrients through the soil

c)

release oxygen into the air

d)

make their own food using sunlight

7.

Mold, fungi, and some types of bacteria are classified as decomposers. What is the role of a decomposer in a food web?

a)

break down waste and dead organisms

b)

use sunlight and water to produce their own food

c)

release oxygen into the atmosphere for respiration

d)

to provide the energy animals need for food

8.

The diagram shows a pond food web. What two organisms get their energy directly from insect larvae?

a)

algae and minnows

b)

sunfish and bass

c)

minnows and sunfish

d)

snails and snapping turtles

9.

The diagram shows a woodlands food chain. What is the role of the tree in the food chain?


Sun → Tree → Squirrel → Hawk

a)

make energy available directly to the Hawk

b)

To use Sun's energy to produce food

c)

to break down waste left by squirrels

d)

to provide a place for the hawk to build it's nest

10.

The prairie food web illustrated here has producers and consumers. In this food web, how many more consumers than producers are there?

a)

2

b)

5

c)

7

d)

9

11.

The diagram shows a food web. What is the original source for all the energy in this food web?

a)

Algae

b)

Sun

c)

Minnows

d)

Insect Larvae

12.

The diagram shows an incomplete food chain. Which of the following would best complete this food chain?

a)

Producer

b)

Consumer

c)

Decomposer

d)

Animal

13.

The diagram illustrates a gulf food web. Which of the following organisms provides energy for more than one other organism in the food web?

a)

Otter

b)

Herring Gull

c)

Blue Crab

d)

Diamondback Terrapin

14.

The diagram shows a prairie food web. Which organism in the food web would be classified as a producer?

a)

Deer

b)

Squirrel

c)

Plant Seeds

d)

Field Mouse

15.

Which way does the arrow point??

a)

Energy to Organism

b)

Organism to Energy

c)

North

d)

South

16.

All food webs start with this!

a)

energy

b)

the sun

c)

decomposers

d)

soil

17.

Herbivores get their energy from eating

a)

they don't need energy

b)

other animals

c)

plants

d)

they make their own food

18.

An example of an herbivore is

a)

sun

b)

fox

c)

deer

d)

grass

19.

Which one is NOT a consumer?

a)

producer

b)

herbivore

c)

carnivore

d)

omnivore

20.

Carnivores get their energy from eating

a)

plants

b)

other animals

c)

nothing, they don't need energy

d)

nothing, they use photosynthesis

21.

An example of a carnivore is

a)

the sun

b)

a tree

c)

a fox

d)

a rabbit

22.

These things break down dead plants and animals.

a)

carnivores

b)

herbivores

c)

decomposers

d)

producers

23.

When decomposers break down dead plants and animals it

a)

helps the sun shine brighter

b)

gives nutrients to the soil

c)

makes roots stronger

d)

helps speed up photosynthesis

24.

An example of a decomposer is

a)

the sun

b)

fungi

c)

a rabbit

d)

a lion

25.

When one animal in a food web is altered,

a)

it becomes endangered.

b)

it becomes extinct.

c)

it doesn't affect anything else.

d)

it affects other animals in the web.

26.

Producers

a)

make their own food

b)

eat herbivores

c)

use photosynthesis

d)

use energy from the sun

27.

Examples of producers are

a)

grass

b)

fox

c)

tree

d)

rabbit

28.

The original source of energy for a food web is...

a)

plants

b)

sun

c)

producers

d)

decomposers

29.

Decomposers get energy from...

a)

the sun

b)

eating plants

c)

eating animals

d)

dead things and waste

30.

Arrows in a food web represent...

a)

eating

b)

sunlight

c)

energy

d)

matter

31.

Who is the producer?

a)

lettuce

b)

greenfly

c)

ladybird

d)

thrush

32.
Which relationship describes predator/prey
a)
hawks and shrubs
b)
mountain lion and deer
c)
frogs and trees
d)
grasses and crickets
33.
An organism that needs to eat other organisms to obtain energy is known as a:
a)
Autotroph
b)
Producer
c)
Consumer
d)
Mutualist
34.
An organism that uses sunlight to create its own food is known as a:
a)
Producer
b)
Heterotroph
c)
Consumer
d)
Decomposer
35.

Which type of organism should replace the X in the food web?

a)

an omnivore

b)

an herbivore

c)

a carnivore

d)

a producer

36.

Which list contains only animals that receive energy transferred directly from consumers in this food web?

a)

Red-tailed hawks, snowshoe hares, and caterpillars

b)

Snowshoe hares and caterpillars

c)

Snowshoe hares and shrews

d)

Shrews and red foxes

37.

ow many types of organisms in this food web obtain energy directly from producers?

a)

two

b)

three

c)

four

d)

five

38.

Which statement correctly describes the transfer of energy in a food chain in this wetland?

a)

Energy is transferred from hawks to shrews to grasshoppers to marsh grasses.

b)

Energy is transferred from marsh grasses to crickets to hawks to frogs.

c)

Energy is transferred from grasshoppers to crickets to frogs to hawks.

d)

Energy is transferred from cattails to crickets to shrews to hawks.

39.

Bacteria, fungi, and worms typically serve what role in an ecosystem?

a)
herbivore
b)
carnivore
c)
omnivore
d)
decomposer
40.
What is a producer?
a)
an organism that gets energy from eating other organisms
b)
an organisms that uses sunlight to make its own food
c)
an organism that gets energy from eating dead organisms, non-living material or waste
d)
an organism that uses chemical energy to make its own food
41.
Where does the energy start in this food chain?
a)
Plant
b)
Sun
c)
Deer
d)
Wolf
42.

Which of these completes the food chain correctly?

a)

a rock

b)

a fox

c)

a plant

d)

an egg

43.

Which of these is a possible food chain for this environment?

a)

Sun → grass → fly → frog

b)

frog → fly → grass → Sun

c)

Sun ← grass ← fly ← frog

d)

Sun → fly → frog → snake

44.
_______are animals that eat only plants.
a)
herbivore
b)
carnivore
c)
omnivore
45.
What are the organisms that break down dead stuff?
a)
Producers
b)
Consumers
c)
Decomposers
d)
Organisms
46.
Which of these organisms would receive energy from the snake?
a)
Plant
b)
Rabbit
c)
Mouse
d)
Hawk
47.

If the mouse population becomes sick and decreases, which statement about the food web will be true?

a)

The grass population will decrease.

b)

The hawk population will increase.

c)

The grass population will increase.

d)

The wildflower population will decrease.

48.

What organism would most likely fit in the box?

a)

A. Cactus

b)

B. Snake

c)

C. Worm

d)

D. Frog

49.

What is eaten by both the owl and the bird?

a)

A. Grass

b)

B. Mice

c)

C. Grasshopper

d)

D. Grain

50.

What is the role of mushrooms?

a)

A. producer

b)

B. comsumer

c)

C. decomposer

d)

D. prey

51.

What is the role of sunflowers?

a)

A. producer

b)

B. consumer

c)

C. decomposer

d)

D. prey

52.

What would happen if the owl population decreased?

a)

A. The owl population would increase

b)

B. The insect population would decrease

c)

C. The mouse population would decrease

d)

D. The mouse population would increase

53.

What is the role of the bearded dragon?

a)

A. producer

b)

B. consumer

c)

C. decomposer

d)

D. prey

54.

Which type of organism is missing from this food web?

a)

A. prodcuer

b)

B. consumer

c)

C. decomposer

d)

D. prey

55.

Which of the following food chains are in the correct order?

a)

A. Eagle > Snake > Sun > Mouse > Grass

b)

B. Sun > Grass > Mouse > Eagle > Snake

c)

C. Eagle > Snake > Mouse > Grass > Sun

d)

D. Sun > Grass > Mouse > Snake > Eagle

56.

What is the role of algae?

a)

A. Producer

b)

B. Consumer

c)

C. Decomposer

d)

D. Prey

57.

In this food web, energy is transferred directly between which two organisms?

a)

A. Conifer leaves and northern goshawks

b)

B. Elk and red crossbills

c)

C. Conifer leaves and blue grouse

d)

D. Blue grouse and wolves

58.

Suppose that a fire in the African savanna kills many of the grasses and trees in that area. What is likely to happen to the population of herbivores that live there?

a)

A. Herbivore population will decrease

b)

B. Herbivore population will increase

c)

C. Herbivore population will remain the same

d)

D. Carnivore population will decrease

59.

What would happen to the population of snakes if the population of mice increased?

a)

A. the population of snakes would decrease

b)

B. the population of snakes would increase

c)

C. the population of snakes would not change

d)

D. the population of snakes does not depend on the mice

60.

What would happen to the population of grasshoppers and to the population of snakes if the bluebirds became sick and killed by a disease?

a)

A. grasshoppers increase; snakes increase

b)

B. grasshoppers decrease; snakes increase

c)

C. grasshoppers increase; snakes decrease

d)

D. grasshoppers decrease; snakes decrease

61.

What is the role of mold?

a)

A. producer

b)

B. consumer

c)

C. decomposer

d)

D. prey

62.

What are the predators of the goat?

a)

A. Lion

b)

B. Wild cat

c)

C. Jackal

d)

D. Lion and Jackal

63.

Which change would most likely occur if all the producers in this ecosystem were removed?

a)

A. the mice would become the new producers

b)

B. all the animals would either die or move away

c)

C. the number of mice would increase

d)

D. all the animal populations would increase

64.

What is the role of a butterfly?

a)

A. producer

b)

B. consumer

c)

C. decomposer

d)

D. prey

65.

Peter has a hamburger and a salad for lunch? Which term describes Peter?

a)

A. carnivore

b)

B. scavenger

c)

C. herbivore

d)

D. omnivore

66.

Which is the initial source of energy in most ecosystems?

a)

A. oxygen in the air

b)

B. nutrients in the soil

c)

C. decomposer

d)

D. sunlight

67.

This diagram shows the movement of energy through ecosystem. Which statement is the best description of how energy derived from the sun flows through this food web?

a)

A. consumer > producer > decomposer

b)

B. producer > decomposer > consumer

c)

C. producer > consumer > decomposer

d)

D. decomposer > producer > consumer

68.

What role do bobcats play in a forest food web?

a)

Bobcats break down dead plants and animals and return nutrients to the soil

b)

Bobcats are consumers of marmots and grouses

c)

Bobcats produce their own energy

d)

Bobcats are predators of grasses and berries

69.

A wetlands food chain is shown, which table show the correct role of each organism?

a)
b)
c)
d)
70.

Which type of organism is missing from this food web?

a)

Decomposer

b)

Predator

c)

Consumer

d)

Producer

71.

How many types of organisms in this food web obtain energy directly from producers?

a)

One

b)

Two

c)

Three

d)

Four

72.

What role do turkeys play in this food web?

a)

Decomposer

b)

Predator

c)

Consumer

d)

Producer

73.

Which table shows the correct role of organisms in the food web?

a)
b)
c)
d)
74.

In this food web, energy is transferred directly between--

a)

mosquitoes and mudskippers

b)

kingfishers and mangrove crabs

c)

prawns and mosquito larvae

d)

kingfishers and mangrove trees

75.

Based on the information in the food web, which of the following food chains shows one way energy flows in this ecosystem?

a)
b)
c)
d)
76.

which statement correctly describes the transfer of energy in a food chain in this ecosystem?

a)

energy is transferred from berries to bears to elk

b)

energy is transferred from grasses to marmots to bobcats

c)

energy is transferred from bobcats to grouses to grasses

d)

energy is transferred from grasses to elk to grouses

77.

Based on the information in the table, which of the following food chains shows one way energy flows in this ecosystem?

a)
b)
c)
d)
78.

Which organisms in this food web only eats producers?

a)

Fruit bats and bandicoots only

b)

insects and fruit bats

c)

rufous owls, bandicoots and pythons only

d)

insects only

79.

Which organisms in this food web eat only consumers?

a)

spider monkey and butterfly only

b)

spider, poison dart frog and butterfly only

c)

jaguar, carcara, spider and poison dart frog only

d)

poison dart frog and jaguar only

80.

Which change would most likely occur if all the producers in this ecosystem were removed?

a)

The populations of consumers would increase

b)

the producers would move to a new location

c)

to populations of consumers would decrease

d)

Pacus would become producers.

81.

Which organisms do not directly consume another organism for energy?

a)

Ravens and Quails

b)

Kangaroo rats and crickets

c)

cacti and seeds

d)

gila monsters and desert tortoises

82.

What is an organism that only gets its energy from producers called?

a)

Herbivore

b)

Carnivore

c)

Omnivore

83.

Where do decomposers get their energy from?

a)

The Sun

b)

Living organisms

c)

Producers

d)

Dead organisms or waste

84.

Producers get their energy from (a)   .

85.

What do the ARROWS in a food web represent?

a)

eating

b)

energy

c)

sunlight

d)

organisms

86.

Where does the wild cat get its energy from?

a)

Lion

b)

Mouse and Rabbit

c)

Rabbit Only

d)

Green plant

87.

What role do plants play in a food web?

a)

Decomposers

b)

Consumers

c)

Producers

d)

Predators

88.

How is energy transferred within an ecosystem?

a)

Through water

b)

By air

c)

Through consumption of producers, consumers, and decomposers

d)

By sunlight

89.

Who is/are the producer(s) in this food web?

a)

Mussels

b)

Zooplankton

c)

Phytoplankton and Algae

d)

Limpets

90.

An organism that gets energy from eating other organisms is called a ______________.

a)

Producer

b)

Consumer

c)

Decomposer

91.

What is a carnivore?

a)

An animal that gets energy through producers.

b)

An animal that gets energy through other consumers.

c)

An animal that gets energy through both producers and consumers.

92.

Who is the first level consumer in this food chain?

a)

wolf

b)

mushroom

c)

arctic moss

d)

caribou

93.

The (a)   is the decomposer for this tundra food chain.

94.

Who is the top predator in this tundra food chain?

a)

wolf

b)

caribou

c)

reindeer moss

d)

bird

95.

Click on the producers in this food web.

a)

oak acorns

b)

kinglet

c)

red-tailed hawk

d)

pine tree

96.

Click on all of the primary consumers in this food chain.

a)

corn snake

b)

pine-borer insect

c)

mouse

d)

red-tailed hawk

97.

Write one food chain within this web. START with a producer.

4 lines
98.

Why do you think the arrows pointing toward the decomposers are blue?

4 lines
99.
Food of almost any kind can be traced back to what?
a)
the sun
b)
animals
c)
plants
d)
soil
100.
This diagram is a model of which of these?
a)
food web
b)
food pyramid
c)
food chain
d)
life cycle
101.
When a millipede breaks down dead and decaying material, it is acting as what?
a)
a decomposer
b)
an apex predator
c)
a producer
d)
prey
102.
Which of these organisms would receive energy from the snake?
a)
Plant
b)
Rabbit
c)
Mouse
d)
Hawk
103.

How many predators eat the rabbit for energy in this food web?

a)

2

b)

3

c)

4

d)

5

104.

A fire destroyed the habitat of the Houston Toad.

The loss of habitat for the Houston Toad most likely affected 

the food web by -

a)

causing a decrease in the number 

of wildflowers

b)

causing an increase in the number 

of insects

c)

causing a decrease in the number 

of armadillos

d)

causing an increase in the number 

of opossums

105.

Look at the food web of a pond ecosystem.

Which food chain shows the correct flow of energy in the pond 

of the food web?

a)
b)
c)
d)
106.

The diagram shows an incomplete food chain. Which of the following would best complete this food chain?

a)

Producer

b)

Consumer

c)

Decomposer

d)

Animal

107.

Which is the correct transfer of energy or Food Chain?

a)

Sun > prairie grass > deer > snake

b)

Sun > plant seeds > robin > eagle

c)

Sun > plant seeds > robin > mountain lion

d)

Sun > plant seeds > field mouse > deer

108.

Which organism DOES NOT pass energy directly to the eagle?

a)

rat

b)

thrush

c)

frog

d)

dragonfly

109.

Which type of organism uses sunlight directly for its energy?

a)

producers

b)

consumers

c)

decomposers

d)

apex predators

110.
Which organism do the owl and the weasel compete for in the food web?
a)
Hawk
b)
Spider
c)
Grasshopper
d)
Shrew
111.
The arrows in a food chain or web represents what?
a)
They point to the organism that is being eaten.
b)
It shows how sunlight flows within an ecosystem.
c)
They show what direction the energy is flowing between organisms. 
d)
They represent how water is transferred within a habitat.
112.
In the food web shown, the snail would be considered...
a)
primary consumer
b)
secondary consumer
c)
tertiary consumer
d)
producer
113.

All of the living and nonliving things interacting in an environment is called

a)

a species.

b)

an ecosystem.

c)

energy.

d)

a habitat.

114.

The process of a plant getting energy from the sun and converting it into food is known as

a)

mitosis.

b)

photosynthesis.

c)

meiosis

d)

symbiosis.

115.

In a food chain or food web, herbivores are known as

a)

producers.

b)

primary consumers.

c)

secondary consumers.

d)

decomposers.

116.

In a food chain or food web, organisms like fungi and bacteria are known as

a)

producers.

b)

primary consumers.

c)

secondary consumers.

d)

decomposers.

117.

Which organism in the food chain is a secondary consumer?

a)

grass

b)

antelope

c)

lion

d)

dung beetle

118.

A food web shows you...

a)

which organisms consume each other

b)

which organisms are in an ecosystem

c)

how energy moves through an ecosystem

d)

all of these

119.

When you consume chicken, where did the energy in that chicken originally come from?

a)

from the chicken itself

b)

from the sun

c)

from the grain the chicken ate

d)

from the eggs the chicken laid

120.
An animal that eats only plants is a ______________________.
a)
carnivore
b)
omnivore
c)
herbivore
d)
decomposer
121.

Humans are considered to be...

a)

consumers

b)

decomposers

c)

producers

122.

Turtles eat earthworms, grubs, bugs, grasses, fruits and berries. Turtles are ______________.

a)

carnivores

b)

herbivores

c)

omnivores

d)

decomposers

123.
Identify the correct food chain that demonstrates the energy flow of this food web
a)
Plant > Caterpillar > Bluebird > Eagle
b)
Plant > Lizard > Snail
c)
Plant >Lizard > Snail >Eagle
d)
Eagle >Lizard>Caterpillar>Plant
124.

What does a food chain represent?

a)

How plants create their own food.

b)

A single path of energy transfer within an ecosystem.

c)

All of the things that a particular animal eats.

d)

How all living organisms within an ecosystem are connected.

125.

What do you call an animal that hunts and eats other animals?

a)

predator

b)

prey

c)

herbivore

d)

producer

126.

Polar bears will eat  seals, walruses and fish to survive. Unlike other bears, polar  bears are said to be mainly...

a)

herbivores

b)

carnivores

c)

omnivores

d)

decomposers

127.

An animal that cannot make its own food and needs to eat to get energy is called

a)

consumer

b)

prey

c)

a plant

d)

producer

128.

What would happen in this food web if the population of the frogs increases?

a)

the population of the grasshoppers will increase

b)

the population of the hawks will decrease

c)

nothing will happen

d)

the population of the grasshoppers will decrease

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