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Food Web and Trophic Levels

Total questions: 29

Worksheet time: 14mins

Name
Class
Date
1.

Something important is missing from this food web! The grass starts this food web. But the plant's energy comes from __________, the one picture that is missing from the food web.

a)

water

b)

the sun

c)

the air

d)

the soil

2.

What happens to the amount of available energy in the pyramid as it moves up through the different levels?

a)

it increases

b)

it decreases

c)

it remains the same

d)

it decreases, then increases

3.

In a food web, each ____________ depends on the trophic level below it for energy.

a)

consumer

b)

producer

c)

decomposer

d)

detritivore

4.
It is a biological community of interacting organisms and their physical environment.
a)
Ecosystem
b)
Biotic System
c)
Abiotic System
d)
None of the choices
5.
These are organisms that creates their own food such as plants and trees.
a)
Population
b)
Community
c)
Producers
d)
Consumers
6.
When a plant is eaten by a caterpillar and the caterpillar is eaten by a frog, the frog belongs to
a)
Producer
b)
Primary consumer
c)
Secondary consumer
d)
Tertiary consumer
7.
When a plant is eaten by a grasshopper, the grasshopper is called
a)
Producer
b)
Primary consumer
c)
Secondary consumer
d)
Tertiary consumer
8.
When the animal dies, what do you call those organisms that break them down?
a)
Producers
b)
Decomposers
c)
Consumers
d)
None of the choices
9.

According to the image, what is the producer?

a)

plant

b)

insect

c)

mouse

d)

snake

10.

The word "primary" means "first."

If that's true, what does primary consumer mean?

Hint: look carefully at the food chain!

a)

the first organism in a food chain

b)

the first organism that consumes something else for energy

11.

According to the image, what is the primary consumer in the food chain?

a)

plant

b)

insect

c)

mouse

d)

snake

12.

According to the image, what is the secondary consumer?

a)

plant

b)

insect

c)

mouse

d)

snake

13.

What kind of organisms are usually primary consumers?

a)

plants

b)

herbivores

c)

carnivores

14.

Look carefully at the image. If energy is lost as it moves up the food chain, what trophic level has the most amount of energy?

a)

1st level - producers

b)

2nd level - primary consumers

c)

3rd level - secondary consumers

d)

4th level - tertiary consumers

15.
The efficiency of energy transfer from a lower trophic level to the next highest level is roughly
a)
1%
b)
10%
c)
100%
d)
1000%
16.
Trophic levels are represented by 
a)
squares
b)
circles
c)
pyramids
d)
lines
17.
Which animal is not the apex predator but, a predator to a mouse?
a)
hawk
b)
rabbit
c)
snake
d)
grass
18.

A producer

a)

Eats grass

b)

Makes its own food

c)

Does not need food(energy)

d)

Is a primary consumer

19.

A primary consumer

a)

makes its own food

b)

eats other animals

c)

is a carnivore

d)

consumes the producer

20.

An animal that only feeds on plants is called

a)

Vegetarian

b)

Herbivore

c)

Carnivore

d)

Vegan

21.

A secondary consumer

a)

Only eats meat

b)

Only eats plants

c)

makes its own food

d)

eats the primary consumer

22.

Carnivores

a)

Animals that feeds on flesh and plants

b)

An animal that doesn't like meat

c)

An animal that feeds on flesh

d)

A human

23.

The first trophic level is

a)

Carnivore

b)

Producer

c)

Primary Consumer

d)

Herbivore

24.

tertiary consumers

a)

Eat the primary consumer

b)

Eat plants and animals

c)

Consume the producer

d)

eat the secondary consumer

25.

a producer always

a)

eats other producers

b)

gets energy from the sun

c)

is a herbivore

d)

is a plant

26.

Which trophic level makes its own food?

a)

producer

b)

carnivore

c)

herbivore

d)

animals

27.

What's an example of a producer?

(a)  

28.

A carnivore eats plants and animals

a)

True

b)

False

29.

Humans are

a)

carnivores

b)

omnivores

c)

herbivores

d)

primary consumers

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