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