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Producers, Consumers, And Decomposers
Test Description: Energy Flow through an Ecosystem
Instructions: Answer all questions to get your test result.
1) Why are plants called producers?
A
They make carbon dioxide
B
They decompose
C
They make their own food
D
They are omnivores
2) What is the process in which plants use sunlight to create energy?
A
Photosynthesis
B
Photography
C
Mitosis
D
Simbiosis
3) All animals are..
A
consumers
B
carnivores
C
producers
D
omnivores
4) Living things that eat other living things are called...
A
animals
B
herbivores
C
consumers
D
omnivores
5) What do herbivores eat?
A
just animals
B
animals and plants
C
only plants
D
dead organisms
6) What do carnivores eat?
A
only other animals
B
Only plants
C
plants and animals
D
dead animals
7) Which of the following is NOT an example of a decomposer
A
hawk
B
fungi
C
bacteria
D
insects
8) What do all food chains start with?
A
consumers
B
herbivores
C
omnivores
D
producers
9) What is a food web?
A
many interconnecting food chains
B
how plants turn sunlight into sugar
C
one path of what eats what in an ecosystem
D
what spiders eat
10) With what type of consumer do herbivores compete with for food?
A
carnivores
B
producers
C
decomposers
D
omnivores
11) What is an energy pyramid used to show?
A
The amount of energy at each trophic level
B
The layout of any organism in any order seen fit
C
The amount of energy in the universe
12) In an energy pyramid, which way does the energy transfer?
A
Both of these
B
From the top of the pyramid to the bottom
C
Neither of these
D
From the bottom of the pyramid to the top
13) The series of steps in which a large fish that eats a small fish that has eaten an algae is a...
A
the pyramid of biomes
B
the food chain
C
the pyramid of numbers
D
the food web
14) In many ecosystem the amount of energy that is transferred from one trophic level to the next is about
A
90% to 100%
B
10%
C
33.3%
D
50%
15) As one progresses from level D to A in the pyramid the amount of stored energy is
A
remain the same
B
increase
C
decrease
16) Why are decomposers such an essential part of any food web and ecosystem?
A
Decomposers provide the base of all energy production in the food web
B
Decomposers prevent new species from coming into the system.
C
Decomposers are responsible for keeping the numbers of herbivores in check
D
Decomposers recycle nutrients that keep the flow of energy going.
17) Which of the following characteristics is shared by both primary and secondary consumers?
A
Gains energy by eating other living things
B
Uses the Sun's radiant energy to produce food
C
The first step in any food chain diagram
D
Eats only plants to gain needed energy
18) What are overlapping food chains with different pathways for the flow of energy in an ecosystem?
A
Food Web
B
Food chain
C
Energy pyramid
19) ___________ get their energy from eating other animals which have eaten plants.
A
Primary Consumer
B
Secondary Producer
C
Producer
D
Tertiary Consumer
20) A _________ is the position an organism occupies on the food web.
A
energy pyramid
B
producer
C
trophic level
D
consumer
*select an answer for all questions
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