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