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WorksheetsReviewing Ecosystems
Total questions: 15
Worksheet time: 8mins
Name
Class
Date
1.
Which of these choices recycles in an ecosystem?
a)
Water
b)
Nutrients
c)
Carbon
d)
All these choices recycle because they are all matter
2.
What is the ultimate source of energy in most ecosystems?
a)
The sun
b)
Producers
c)
Primary Consumers
d)
Tertiary Consumers
3.
Which kind of organism gives the rest of the ecosystem access to the sun's energy?
a)
Tertiary consumers
b)
Secondary consumers
c)
Primary consumers
d)
Producers
4.
What percent of energy is available to transfer to the next trophic level?
a)
100%
b)
90%
c)
10%
d)
1%
5.
What happens to energy that does NOT transfer to the next trophic level?
a)
It gets eaten
b)
It is used for life's processes such as running and breathing.
c)
It gets recycled into the ecosystem.
d)
None of these are correct.
6.
If a scientists wants to diagram the flow of energy through all the organisms in an ecosystem, what should he/she use?
a)
An energy pyramid
b)
A food web
c)
A spreadsheet
d)
A written paper
7.
What do we call an organism that breaks down dead organic materials?
a)
A primary consumer
b)
A producer
c)
A tertiary consumer
d)
A decomposer
8.
What two elements are contained in ALL organic matter?
a)
Carbon and Nitrogen
b)
Carbon and Hydrogen
c)
Nitrogen and Hydrogen
d)
Carbon and Calcium
9.
Which two elements are the main nutrients that are recycled through composting?
a)
Carbon and Hydrogen
b)
Carbon and Nitrogen
c)
Water and Carbon
d)
Calcium and Nitrogen
10.
Which molecule do plants make for food?
a)
Water
b)
Glucose
c)
Oxygen
d)
Carbon Dioxide
11.
Which of the following is MOST important to the cycling of matter in an ecosystem?
a)
Water
b)
Carbon
c)
Oxygen
d)
Decomposers
12.
After obtaining energy from the sun, every food chain must start with some kind of:
a)
Consumer
b)
Producer
c)
Animal
d)
Human
13.
If an organism eats a producer it is a:
a)
Primary consumer
b)
Secondary consumer
c)
Tertiary consumer
d)
Producer
14.
If an organism eats a SECONDARY consumer it is a:
a)
Primary consumer
b)
Secondary consumer
c)
Tertiary consumer
d)
Producer
15.
If an organism eats a PRIMARY consumer it is a:
a)
Primary consumer
b)
Secondary consumer
c)
Tertiary consumer
d)
Producer
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