Georgia Science Grade 7

Chapter 24: Interactions of Life

CRCT Practice

1
Which of the following terms is defined in part by nonliving factors?
A)population
B)community
C)ecosystem
D)niche
2
Dead plants at the bottom of this pond are consumed by

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A)omnivores.
B)herbivores.
C)carnivores.
D)decomposers.
3
If the pond shrinks in size, what effect will this have on the population density of the pond's minnow species?

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A)It will increase.
B)It will decrease.
C)It will stay the same.
D)No effect; it is not a limiting factor.
4
Which of the following includes organisms that can directly convert energy from the Sun into food?
A)producers
B)decomposers
C)omnivores
D)consumers
5
An eastern screech owl might compete with which organism most intensely for resources?

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A)mouse
B)hawk
C)mountain lion
D)wren
6
Which of the following organisms might compete with the mouse for seeds? >
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A)hawk
B)lion
C)fox
D)sparrow
7
Which of the following is an example of a community?
A)all the white-tailed deer in a forest
B)all the trees, soil, and water in a forest
C)all the plants and animals in a wetland
D)all the cattails in a wetland
8
Which term would include all places where organisms live on Earth?
A)ecosystem
B)habitat
C)biosphere
D)community
9
The graph depicts the growth of two white-footed mice populations, one exposed to hawks (population A) and one without hawks (population B).Which of the following statements is TRUE?

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A)Hawks arse a limiting factor for both populations.
B)Hawks are only a limiting factor for population A.
C)Hawks are only a limiting factor for population B.
D)Hawks are not a limiting factor for either population.
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