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7.MS-LS2-3
Test Description: 7.MS-LS2-3
Instructions: Answer all questions to get your test result.
1) What happens to the energy in the grass when it is eaten by grasshoppers?
A
The grass hoppers use about 90% of the energy in the grass and store about 10% of it in their bodies
B
The grass hoppers use about 10% of the energy in the grass and store about 90% of it in their bodies
C
The grasshoppers use all of the energy in the grass in order to stay alive
D
The grass hoppers use about 50% of the energy in the grass and store about 50% of it in their bodies
2) Which statement is correct?
A
There will always be more hawks than snakes in a forest
B
There will always be the same number of hawks as snakes
C
Whether there are more snakes or hawks in a forest depends on the resources available
D
There will always be more snakes than hawks in a forest
3) What happens to the amount of biomass in an ecosystem as we move through it?
A
it decreases at each trophic level
B
it increases at each trophic level
C
it stay the same at each trophic level
D
it depends on the ecosystem
4) What happens to the amount of available energy in an ecosystem as it moves through the ecosystem?
A
it increases at each trophic level
B
it depends on the ecosystem
C
it stays the same at each trophic level
D
it decreases at each trophic level
5) Which word means the same as producer?
A
photosynthesis
B
autotroph
C
plant
D
heterotroph
6) A primary consumer is.....
A
always a plant
B
a carnivore
C
an herbivore
D
found in the first trophic level
7) How is energy passed through a food web?
A
energy is constantly being recreated throughout a food web
B
by organisms eating other organisms
C
by the Sun
D
through cellular respiration
8) Which of the following is NOT a heterotroph?
A
a decomposer
B
a consumer
C
a producer
D
a scavenger
9) Which is one way that carbon is taken out of the air?
A
respiration
B
decomposition
C
combustion
D
photosynthesis
10) What can happen to some toxins, such as DDT and mercury, as they move through a food chain?
A
the concentration can increase
B
organisms can get rid of the toxin
C
the concentration can remain the same
D
the concentration can decrease
*select an answer for all questions
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