Ecology EL 7 Practice Test

What are the basic needs of living things?

• food and agua

• shelter and living space

• air/oxygen

• all of these

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Which of the following type of organisms is the first step in a food chain?

• producers

• mammals

• consumers

• decomposers

All of the nonliving parts of an ecosystem are referred to as

• the community

• biotic factors

• abiotic factors

• biomes

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All are biotic factors EXCEPT

• raccoons

• sunlight

• pine trees

• mushrooms

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Ponds, streams, and prairies are examples of

• niches

• producers

• populations

• ecosystems

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A group of the same type of organism living in the same place at the same time is a

• habitat

• population

• community

• ecosystem

An organism's "job" in the environment is its

• niche

• habitat

• biome

• population

Symbiotic relationships are between

• just two animals

• either two animals or two plants

• just two plants

• either an animal and plant, plant and plant, or animal and animal

Mutualism is a relationship between two organisms where

• both organisms are harmed

• one organism is harmed and the other benefits

• both organisms benefit

• one organism benefits and the other is not affected

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Parasitism is a relationship between two organisms where

• both organisms are harmed

• one organism is harmed and the other benefits

• both organisms benefit

• one organism benefits and the other is not affected