Glencoe Science Level Green

Chapter 18: Interactions of Living Things

Standardized Test Practice

1
Which of the following in the illustration is an example of both a biotic and abiotic factor?

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A)soil
B)grass
C)earthworm
D)tree
2
According to the graph, what is the projected human population for the world in 2050?

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A)8 billion
B)6 billion
C)9 billion
D)3 billion
3
According to the graph, how much did the human population grow between 1960 and 2000?

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A)4 billion
B)5 billion
C)3 billion
D)6 billion
4
The number of individuals in a population that live in a definite area is called
A)a community.
B)carrying capacity.
C)an ecosystem.
D)population density.
5
Many dogs and cats are infested with fleas. The relationship between the fleas and the dog, or between the fleas and the cat are an example of
A)commensalism.
B)parasitism.
C)carrying capacity.
D)mutualism.
6
An owl preys on mice. This is an example of predation. Which of the following is true?
A)This limits the mice population.
B)This increases the carrying capacity for owls.
C)This increases the population density of mice.
D)This is a form of parasitism.
7
The diagram is an example of a(n)

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A)food chain.
B)food web.
C)energy cycle.
D)energy pyramid.
8
Which level in the diagram represents producers?

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A)level 1
B)level 2
C)level 3
D)level 4
9
Which level in the diagram has the least amount of energy available?

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A)level 3
B)level 2
C)level 1
D)level 4
10
Which of the following is not a step in the water cycle?
A)condensation
B)evaporation
C)precipitation
D)dehydration
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