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Food webs revision

Total questions: 17

Worksheet time: 28mins

Name
Class
Date
1.
All energy transformations in an ecosystem begin with
a)
a scavenger
b)
the sun
c)
a decomposer
d)
a herbivore
2.
__________ is an organism that only eats plants for energy.
a)
Carnivore
b)
Herbivore
c)
Omnivore
d)
Terivore
3.

Using food web which of the following is a secondary consumer?

a)

snake

b)

worm

c)

butterfy

d)

squirrel

4.
__________ is an organism that only eats meat for energy.
a)
Omnivore
b)
Borivore
c)
Herbivore
d)
Carnivore
5.

Using the food web what would happen if the eagle became extinct?

a)

The frog population would decrease.

b)

The frog population would increase.

c)

The butterfly population would increase.

d)

The snake population would decrease.

6.

Which is the primary source of energy for plants?

a)

producer

b)

consumer

c)

decomposer

d)

sun

7.

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.

8.
What are the organisms that break down dead stuff?
a)
Producers
b)
Consumers
c)
Decomposers
d)
Organisms
9.

Using the food web which of the following is a primary consumer?

a)

butterfy

b)

snake

c)

fox

d)

frog

10.
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.
11.
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.
12.

Using the food web which of the following is a tertiary consumer?

a)

frog

b)

bird

c)

eagle

d)

worm

13.
A food web can be broken down into several seperate
a)
food chains
b)
food pyramids
c)
producers
d)
consumers
14.

Decomposers get energy from...

a)

the sun

b)

eating plants

c)

eating animals

d)

dead things and waste

15.

Arrows in a food web represent...

a)

eating

b)

sunlight

c)

energy

d)

matter

16.

Who is the producer?

a)

lettuce

b)

greenfly

c)

ladybird

d)

thrush

17.

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

a)

an omnivore

b)

an herbivore

c)

a carnivore

d)

a producer