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Food Chains and Food Webs

Total questions: 16

Worksheet time: 32mins

Name
Class
Date
1.

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

a)
herbivore
b)
carnivore
c)
omnivore
d)
decomposer
2.
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
3.
Where does the energy start in this food chain?
a)
Plant
b)
Sun
c)
Deer
d)
Wolf
4.

Which of these completes the food chain correctly?

a)

a rock

b)

a fox

c)

a plant

d)

an egg

5.

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

6.
_______are animals that eat only plants.
a)
herbivore
b)
carnivore
c)
omnivore
7.
a _______ shows how each living thing gets food and how nutrients and energy are passed from organism to organism. 
a)
ecosystem
b)
food chain
8.
What are the organisms that break down dead stuff?
a)
Producers
b)
Consumers
c)
Decomposers
d)
Organisms
9.
Which of these organisms would receive energy from the snake?
a)
Plant
b)
Rabbit
c)
Mouse
d)
Hawk
10.

What is the effect of removing prey from a food chain?

a)

All predators above them will die or suffer.

b)

The prey's predator will die or suffer, but everybody else should be fine.

c)

The prey will always, eventually, come back

d)

The predators population will grow

11.

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.

12.

An example of a predator:

a)

shark

b)

mouse

c)

rabbit

13.

An example of prey:

a)

lion

b)

mouse

c)

shark

14.
Recently, a family of bobcats moved into an area with a large rabbit population. What changes may occur in the ecosystem?
a)
The rabbit population may increase
b)
The rabbit population may decrease
c)
The rabbit population may increase first, then decrease
d)
The rabbit population will remain the same
15.
A population of mice lives in a barn community. A cat population has just joined the community. What will happen?
a)
Mouse and cat populations both go up?
b)
Mouse and cat populations both go down
c)
Mouse population goes down as cat population goes up
d)
Mouse population goes up as cat population goes down
16.
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