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Flow Of Energy Through Ecosystems
Test Description: How does energy flow through an ecosystem?
Instructions: Answer all questions to get your test result.
1) Organisms that make their own food through photosynthesis or chemosynthesis:
A
consumer
B
autotroph
C
both 2 and 3
D
producer
2) The arrows in a food web show:
A
the direction the sun shines
B
order from smallest to largest
C
which direction the energy flows
D
which organism eats another
3) Only about __________ of the original energy is available to passed on at every trophic level.
A
20
B
50
C
100
D
10
4) Producers store ____________________ energy in the form of ____________ energy.
A
thermal, chemical
B
thermal, electrical
C
chemical, radiant
D
radiant, chemical
5) Organisms that must consume other organisms for food:
A
chemotroph
B
heterotroph
C
producers
D
autotroph
6) How are decomposers different from detritivores?
A
they are sessile
B
they are producers
C
they are more complex
D
they are less complex
7) A food chain always begins with a ____________________.
A
producer
B
plant
C
consumer
D
animal
8) Some organisms produce food through the process of chemosynthesis. These organisms do not need ___________ to make food and live.
A
water
B
sunlight
C
raw materials
D
minerals
9) A________________ consumer eats producers.
A
secondary
B
top
C
primary
D
tertiary
10) Omnivores eat:
A
animals only
B
plants and animals
C
plants only
D
jelly beans only
*select an answer for all questions
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