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Food Webs

Total questions: 53

Worksheet time: 1hrs 5mins

Name
Class
Date
1.
Which best describes what a food chain shows you?
a)
Energy flow through an ecosystem
b)
Food flowing through an ecosystem
c)
Consumers going into other consumers
d)
Who eats who
2.
Where does the energy start in this food chain?
a)
Plant
b)
Sun
c)
Deer
d)
Wolf
3.
Which of these organisms would receive energy from the snake?
a)
Plant
b)
Rabbit
c)
Mouse
d)
Hawk
4.

Observe the food chain above. Which organism’s population would increase if finches were removed from the ecosystem?

a)

Grass

b)

Grasshopper

c)

Snake

d)

Hawk

5.
Which best describes what a food chain shows you?
a)
Energy flow through an ecosystem
b)
Food flowing through an ecosystem
c)
Consumers going into other consumers
d)
Who eats who
6.
Where does the energy start in this food chain?
a)
Plant
b)
Sun
c)
Deer
d)
Wolf
7.
Which of these organisms would receive energy from the snake?
a)
Plant
b)
Rabbit
c)
Mouse
d)
Hawk
8.

Observe the food chain above. Which organism’s population would increase if finches were removed from the ecosystem?

a)

Grass

b)

Grasshopper

c)

Snake

d)

Hawk

9.

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

a)

2

b)

3

c)

4

d)

5

10.

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

11.

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)
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.

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

14.

How would the removal of earthworms from the food chain affect the other organisms?

a)

The number of bass will increase.

b)

The number of crayfish will decrease.

c)

The crayfish will get their energy directly from the sun.

d)

The number of bass and ospreys (bird) will increase.

15.

The picture shows the energy flow through a meadow community. Which of the following would most likely occur to the populations within the community of organisms immediately after a wildfire burns the environment?

a)

Hawks would increase and foxes would increase.

b)

Hawks would decrease and foxes would increase.

c)

Meadow plants would increase and rabbits would decrease.

d)

Meadow plants would decrease and rabbits would decrease.

16.
What may happen if the snowshoe hare was removed from the food web pictured?
a)
The insects in the habitat would increase.
b)
The shrew population would decrease due to being only hawk food source.
c)
The willow tree population would decrease.
d)

The population of foxes would decrease due to no food source. 

17.
If the grasshopper were to be removed completely from the food web, what organism would be most effected?
a)
The squirrel
b)
The shrew
c)
The deer
d)
The rabbit
18.

If a disease kills most of the gazelles, what would happen to the zebra population?

a)

The zebra population would decrease because the lions and cheetahs would eat more zebras.

b)

The zebra population would decrease because the gazelles are eating less grass.

c)

The zebra population would increase because the population of lions and cheetahs would increase.

d)

The zebra population would not be affected by a change in the gazelle population

19.
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.
20.

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.

21.

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

a)

plants

b)

sun

c)

producers

d)

decomposers

22.

Which of the following do omnivores eat?

a)

plants only

b)

plants and meat

c)

meat only

d)

they make their own food

23.

Which of the following do omnivores eat?

a)

plants only

b)

plants and meat

c)

meat only

d)

they make their own food

24.

What is a food web?

a)

all the plants and animals in an area

b)

a web created by a spider to trap its food

c)

a complex network of food chains in an ecosystem

d)

a line of "what eats what"

25.

Which is a characteristic of animals that are in the same food web?

a)

they are in the same ecosystem

b)

they only eat plants

c)

they only eat meat

d)

they are all decomposers

26.

in a food web, which of these is a producer?

a)

humans

b)

lizards

c)

spiders

d)

grass

27.

A cricket only eats plants. What would a cricket be classified as?

a)

an omnivore

b)

a carnivore

c)

an herbivore

d)

a producer

28.

A spider eats insects, like flies and crickets. What type of consumer is a spider?

a)

an herbivore

b)

a carnivore

c)

an omnivore

d)

a decomposer

29.

What is the role of a decomposer in a food web?

a)

it eats animals

b)

it produces its own food

c)

it eats plants

d)

it breaks down dead plants and animals

30.

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

a)

plants

b)

sun

c)

producers

d)

decomposers

31.

Arrows in a food web represent...

a)

eating

b)

sunlight

c)

energy

d)

matter

32.

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

a)
herbivore
b)
carnivore
c)
omnivore
d)
decomposer
33.

Make a food chain

a)
b)
c)
d)
e)
1)
2)
3)
4)
5)
34.

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

a)

plants

b)

sun

c)

producers

d)

decomposers

35.

Decomposers get energy from...

a)

the sun

b)

eating plants

c)

eating animals

d)

dead things and waste

36.

Arrows in a food web represent...

a)

eating

b)

sunlight

c)

energy

d)

matter

37.

Who is the producer?

a)

lettuce

b)

greenfly

c)

ladybird

d)

thrush

38.
Which relationship describes predator/prey
a)
hawks and shrubs
b)
mountain lion and deer
c)
frogs and trees
d)
grasses and crickets
39.
An organism that needs to eat other organisms to obtain energy is known as a:
a)
Autotroph
b)
Producer
c)
Consumer
d)
Mutualist
40.
An organism that uses sunlight to create its own food is known as a:
a)
Producer
b)
Heterotroph
c)
Consumer
d)
Decomposer
41.

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

a)

an omnivore

b)

an herbivore

c)

a carnivore

d)

a producer

42.

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

43.

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

a)

two

b)

three

c)

four

d)

five

44.

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.

45.

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

a)
herbivore
b)
carnivore
c)
omnivore
d)
decomposer
46.
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
47.
Where does the energy start in this food chain?
a)
Plant
b)
Sun
c)
Deer
d)
Wolf
48.

Which of these completes the food chain correctly?

a)

a rock

b)

a fox

c)

a plant

d)

an egg

49.

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

50.
_______are animals that eat only plants.
a)
herbivore
b)
carnivore
c)
omnivore
51.
What are the organisms that break down dead stuff?
a)
Producers
b)
Consumers
c)
Decomposers
d)
Organisms
52.
Which of these organisms would receive energy from the snake?
a)
Plant
b)
Rabbit
c)
Mouse
d)
Hawk
53.

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.

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