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Worksheets

Ecosystem

Total questions: 25

Worksheet time: 35mins

Name
Class
Date
1.
Look at the food chain: grass > cricket > frog > owl. Which is the primary consumer?
a)
Grass
b)
Cricket
c)
Frog
d)
Owl
2.
What do the arrows in the food chain show?
a)
The transfer of energy
b)
What animals eat
c)
The order of animal dominance
3.
A diagram of a food web is shown below.Which organism receives the least amount of energy from the producers?
a)
Hawk
b)
Rabbit
c)
Grasshopper
d)
Mouse
4.

An animal that eats both plants and meat is called a

a)

herbivore

b)

carnivore

c)

omnivore

d)

decomoposer

5.
An animal that eats other animals is a....
a)
carnivore
b)
omnivore
c)
herbivore
d)
decomposer
6.
Which level will contain plants?
a)
A
b)
B
c)
C
d)
D
7.
The largest group of organisms found in a food web would be:
a)
Primary Consumers
b)
Producers
c)
Decomposers
d)
Tertiary Consumers
8.

Consumers that eat only plants

a)

Carnivores

b)

Omnivores

c)

Herbivores

d)

Scavengers

9.

Organisms that make their own food

a)

Producer

b)

Consumer

c)

Decomposer

10.

A food _______ consists of many overlapping food ________.

a)

web, chains

b)

chain, webs

c)

pyramid, webs

d)

web, pyramids

11.

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

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

a)

Vole

b)

Frog

c)

Insect

d)

Thrush

12.

Which two organisms compete for the rabbit for energy?

a)

Mouse and Tree

b)

Owl and Goat

c)

Wildcat and Jackal

d)

Lion and Jackal

13.
A secondary consumer 
a)
eats primary consumers
b)
eats producers
c)
eats plants
14.
Which of the following is an example of a biotic factor in an ecosystem?
a)
sunlight
b)
stream
c)
rock
d)
tree
15.
Decomposers are important to ecosystems because they
a)
return vital nutrients to the ecosystem
b)
capture energy from the Sun
c)
are producers
d)
can be omnivores
16.
A consumer gets energy by
a)
absorbing sunlight.
b)
breaking down dead organisms.
c)
soaking it up from the ground.
d)
feeding on other organisms.
17.
All the living and nonliving things interacting in a particular area create an ________________.
a)
ecosystem
b)
biodome
c)
playground
d)
park
18.
Grass is considered a ...
a)
consumer
b)
producer
c)
decomposer
d)
composers
19.
An organism that uses sunlight to create its own food is known as a:
a)
Producer
b)
Heterotroph
c)
Consumer
d)
Decomposer
20.

All food chains/webs start with

a)

producers

b)

consumers

c)

decomposers

d)

scavengers

21.

____________________ is the process by which light energy from the sun is converted to food.

a)

osmosis

b)

inertia

c)

photosynthesis

d)

decomposition

22.

What is the primary source of energy used by producers during photosynthesis?

a)

dirt

b)

light energy from the sun

c)

chemical energy from food and oxygen

d)

chemical energy from carbon dioxide and water

23.

Where do animals get their energy from?

a)

food

b)

environment

c)

air

d)

soil

24.

What is the primary role of decomposers in an ecosystem?

a)

control the population of producers and consumers

b)

compete with producers for energy and other resources

c)

provide a source of energy for the producers

d)

recycle energy and materials from dead organisms

25.

Animals can be producers in the ecosystem.

a)

True

b)

False