Georgia Science Grade 7

Chapter 26: Ecosystems

CRCT Practice

1
What two factors are most responsible for limiting life in a particular area?
A)sunlight and temperature
B)precipitation and temperature
C)precipitation and sunlight
D)soil conditions and precipitation
2
Which of the following statements best describes what is represented by A?

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A)The climax stage has been reached.
B)Pioneer species are forming soil.
C)Rock covers most of the area.
D)Secondary succession is occurring.
3
Which of the following statements best describes what is represented by B?

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A)Primary succession is occurring.
B)Secondary succession is occurring.
C)A forest fire has probably occurred.
D)The climax stage has been reached.
4
What biome is located in the latitudes just south of the north pole?

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A)taiga
B)temperate deciduous rain forest
C)tundra
D)temperate rain forest
5
The tropical rainforest biome is found primarily near the

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A)Arctic Circle.
B)Tropic of Cancer.
C)equator.
D)equator.
6
Which of the following is composed of a mix of salt water and freshwater?
A)an intertidal zone
B)an estuary
C)a seashore
D)a coral reef
7
Which of the following forms during primary succession?
A)trees
B)soil
C)wildlife
D)grasses
8
In what biome would you most likely find A?

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A)tropical rainforest
B)desert
C)taiga
D)grassland
9
In what biome would you most likely find B?

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A)tundra
B)desert
C)grassland
D)tropical rainforest
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