Trophic Levels & Energy

Front

What percentage of energy is lost as heat or used by organisms at each trophic level?

Back

90%

Front

What are organisms that create their own energy from sunlight or chemicals called?

Back

Autotroph

Front

If a primary producer has 1,000 Joules of energy, how much energy would a primary consumer get?

Back

100 J

Front

From where do producers get their energy?

Back

The sun

Front

What is an organism that cannot make its own food called?

Back

Heterotroph

Front

What is the term for the first trophic level in an ecosystem?

Back

Producers

Front

What type of organism eats both plants and animals?

Back

Omnivore

Front

What is the role of primary consumers in a food chain?

Back

They eat primary producers.

Front

What is the energy transfer efficiency between trophic levels?

Back

About 10% of energy is transferred to the next level.

Front

What is a food web?

Back

A complex network of feeding relationships among organisms in an ecosystem.