Unit #1 Review B

Front

What is the lowest concentration of chemical pollutants found in a food web?

Back

Producers contain the lowest concentration of chemical pollutants.

Front

What is an organism that makes its own food using sunlight or chemicals?

Back

Autotroph

Front

What is the role of an organism that breaks down and absorbs nutrients from dead organisms?

Back

Decomposer

Front

Which organisms have the most energy available in an energy pyramid?

Back

Producers have the most energy available.

Front

What happens to energy as you move up an energy pyramid?

Back

Energy decreases as you move up the pyramid.

Front

Define 'producer' in an ecosystem.

Back

Producers are organisms that produce their own food, typically through photosynthesis.

Front

What is a 'primary consumer'?

Back

Primary consumers are organisms that eat producers; they are herbivores.

Front

What is a 'secondary consumer'?

Back

Secondary consumers are organisms that eat primary consumers; they can be carnivores or omnivores.

Front

What is a 'tertiary consumer'?

Back

Tertiary consumers are organisms that eat secondary consumers; they are often top predators.

Front

What is a 'trophic level'?

Back

A trophic level is a position in a food chain or food web, defined by how an organism obtains its energy.