Ecology Biotic and Abiotic Relationships

Which of the following best describes a population?

• members of the same species living in the same place at the same time

• all the birds in an area

• all types of organisms living in the same place

• all members of biotic factors

The community of a pond is made up of all the

• abiotic factors in the water.

• resources organisms need.

• habitats in and around the water.

• populations of fish, insects, and other living organisms.

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NGSS.MS-LS2-1

NGSS.MS-LS2-4

An ecosystem consists of

• a community of organisms.

• energy.

• the soil, water, and weather.

• All of the choices are correct.

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Which of the following describes soil and temperature in an ecosystem?

• abiotic factors

• biotic factors

• unnecessary factors

• selection factors

Which of the following is a biotic factor in the prairie ecosystem?

• water

• sunlight

• soil

• grass

The smallest unit of ecological organization is a single

• population

• community

• organism

• ecosystem

Which of the following is not a biotic factor in an ecosystem?

• roots

• insects

• leaves on a tree

• air

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NGSS.MS-LS2-3

The specific physical location in which a given species lives is called its

• habitat.

• abiotic factor

• community.

• climate.

All the different populations that live together in an area make up a(an)

• organism

• community

• species

• ecosystem

Each of the following is an abiotic factor in the environment EXCEPT

• plant life

• soil type

• rainfall

• temperature