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Study Quiz 1.2: How Organisms Interact in Ecosystems
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1
What is a population?
A)A group of individuals of the same species that live in the same ecosystem
B)All the abiotic parts of the environment
C)The total number of different species in any one area
D)air, water, soil, or climate
2
Food, water, shelter, and a space in which to live all describe an organism's
A)biome
B)population
C)habitat
D)community
3
When populations share their environment and interact with populations of other species, it is called a
A)biome
B)ecoprovince
C)community
D)species
4
Scientists refer to a biological community and the abiotic parts of the environment that affect the community as
A)a habitat
B)a species
C)an ecosystem
D)an ecological reserve
5
If you studied ecosystems to learn about relationships between organisms and any changes in populations that take place over a long period of time, you would be
A)an economist
B)an ecosystem
C)an ecology
D)an ecologist
6
Which of the following is a way of counting the number of organisms in a small area to estimate the number of organisms in a much larger area?
A)communicating
B)sampling
C)organizing
D)banding
7
Scientists often estimate population sizes in ecosystems by marking off a specific area using a
A)community
B)triangle
C)quadrat
D)niche

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Use the diagram above to answer the next three questions.

8
Illustration B is an example of

A)a population
B)an ecosystem
C)an individual
D)surveying
9
Illustration C is an example of
A)a population
B)a community
C)an individual
D)an ecosystem
10
Illustration D is an example of
A)an ecosystem
B)an individual
C)a population
D)a community





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