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Worksheets

Food Webs & Food Chains

Total questions: 20

Worksheet time: 15mins

Name
Class
Date
1.

Which of the following animals are herbivores?

I Goat

II Bear  

III Lion  

IV Squirrel  

a)

I and II

b)

I and IV

c)

II and III

d)

III and IV

2.

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.

3.

Which type of consumer is always a primary consumer?

a)

Herbivore

b)

Omnivore

c)

Carnivore

d)

Producer

4.

Look carefully at the image. Which organism is tertiary consumer?

a)
Wolf
b)

bird

c)

lizard

d)

grasshopper

5.

Bacteria and fungi that break down dead plant and animals.

a)

Consumer

b)

Producer

c)

Decomposer

6.

To which living thing or things does the mouse's energy pass?

a)

snake only

b)

hawk only

c)

hawk and snake only

7.

Which of the following is not a secondary consumer?

a)

hawk

b)

lizard

c)

mouse

d)

snake

8.

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

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

a)

Vole

b)

Frog

c)

Insect

d)

Thrush

9.
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
10.
The rabbit in this food web would be considered a:
a)
Decomposer
b)
Producer
c)
Secondary (2nd order) Consumer
d)
Primary (1st order) Consumer
11.
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.
12.

Which of the following animals is at the top of the food web?

a)

Skunk

b)

Owl

c)

Squirrel

d)

Caterpillar

13.
The mouse in this food web would be considered a:
a)
Primary Consumer
b)
Producer
c)
Tertiary Consumer
d)
Secondary Consumer
14.

A partial Texas food web is shown.


The populations of which organisms will most likely increase as a result of a disease that suddenly reduced the population of Texas horned lizards?

a)

grasses and ants

b)

ants and grasshoppers

c)

grasshoppers and texas cottonmouths

d)

texas cottonmouths and red-shouldered hawks

15.

Which might be the impact(s) of a rapidly increasing deer population on the food web in the picture below? Select each correct answer. 

a)

An increase in the population of birds due to the increased source of food 

b)

A decrease in the population of bees due to increased competition 

c)

An increase in the population of mountain lions due to the increased source of food

d)

A decrease in the population mountain lions due to the change in habitat

16.

What would happen to the owl population if the mice were to die?

a)

There would be an increase in owls because they would eat rabbits

b)

There would be a increase in owl because they would eat grass

c)

There would be a decrease in owls because they only have 1 food source now

d)

There would be a decrease in owls because they would be easier prey for hawks

17.
Bears eat fish, insects, plants, seeds, nuts and young elk. They are called __________.
a)
Franivore
b)
Carnivore
c)
Herbivore
d)
Omnivore
18.
The shrew provides energy for the _______?
a)
cricket
b)
grasshopper
c)
frog
d)
snake
19.
Why might an organism have more than one arrow coming from them in a food web?
a)
More than one organism may eat them. 
b)
They may eat more than one other organism. 
c)
This organism gets its energy from multiple sources. 
d)
They have no resources available to them.
20.
Where does the energy start in this food chain?
a)
Plant
b)
Sun
c)
Deer
d)
Wolf