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Food Webs

Total questions: 22

Worksheet time: 29mins

Name
Class
Date
1.

Producers are always at the __________ of a food chain

a)

Beginning

b)

Middle

c)

End

d)

Producers are not part of the food chain

2.

Consumers...

a)

Make their own food

b)

Go through photosynthesis

c)

Eat other organisms

d)

Breathe in carbon dioxide

3.

Which of these things is NOT a consumer

a)

Human

b)

Whale

c)

Tree

d)

Chicken

4.

As you move through a food chain, the amount of energy stored....

a)

Increases

b)

Decreases

c)

Stays the same

d)

It depends on the ecosystem

5.

Arrows in a food web show the flow of

a)

energy

b)

protein

c)

nutrients

d)

glucose

6.

Multiple food chains that interact together is called a ....

a)

Spider Web

b)

Food Spider

c)

Food Web

d)

Web of Food

7.
An organism that gets energy from breaking down dead organisms, non-living material or waste
a)
producer
b)
consumer
c)
decomposer
d)
autotroph
8.

Where does all energy in food web originate from?

a)

Earth's Core

b)

Water

c)

Plants

d)

The Sun

9.
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.
10.

Organisms that must eat to gain energy, and eat secondary consumers.

a)

Producers

b)

Primary Consumers

c)

Secondary Consumers

d)

Tertiary Consumers

11.

In this food web, the mouse would be a _________.

a)

Producer

b)

Primary Consumer

c)

Secondary Consumer

d)

Tertiary Consumer

12.

In this food web, the berries would be a _________.

a)

Producer

b)

Primary Consumer

c)

Secondary Consumer

d)

Tertiary Consumer

13.

In this food web, the bird would be a _________ and a _________.

a)

Producer

b)

Primary Consumer

c)

Secondary Consumer

d)

Tertiary Consumer

14.
An organism that needs to eat other organisms to obtain energy is known as a:
a)
Autotroph
b)
Producer
c)
Consumer
d)
Mutualist
15.
What might happen if you remove a primary consumer from the ecosystem?
a)
There would be more food for secondary consumers.
b)
The number of primary consumers would increase.
c)
The number of plants would increase.
d)
The number of secondary consumers would increase.
16.
A mouse eats the grass, a snake eats the mouse and the hawk eats the snake.  Who has the least amount of the original energy from this food chain?
a)
Mouse
b)
Grass
c)
Snake
d)
Hawk
17.
What is the role of decomposers in a food chain?
a)
Use sunlight to make food
b)
Eat other organisms to gain energy
c)
Make the food for the whole food chain
d)
Break down dead organisms and add nutrients to the soil
18.
Which organism recieves the least amount of energy from the producer?
a)
Owl
b)
Grasshopper
c)
Lilypad
d)
Mouse
19.
Based on the food web shown above, which of the following is most likely responsible for the rabbit population trend as shown in the graph? 
a)
increase in amount of grass
b)
decrease in amount of grass
c)
overpopulation in squirrel population
d)
increase in rabbit population
20.

Using the food web, choose the organisms in the correct order.

a)

microscopic plants > water fleas > small fish > perch

b)

microscope plants > perch > water flease > small fish

c)

perch > waterboatmen > small fish > tadpoles

d)

microscopic plants > tadpoles > water boatman > perch

21.

In the food web shown, who is the secondary consumer?

a)

grass

b)

mouse

c)

rabbit

d)

fox

22.

Which of the following organisms could be classified as a

tertiary consumer based on the food web shown?

a)

Barnacle

b)

Tern

c)

Hawkfish

d)

Blenny

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