ES Ch 5.1 Energy Flow in Ecosystems Flashcard

Front

What shows many feeding relationships that are possible in an ecosystem?

Back

Food web

Front

What is the ultimate source of energy for almost all organisms?

Back

Sun

Front

What is the term for the linear sequence in which energy is transferred from one organism to the next as each organism eats another organism?

Back

Food chain

Front

What is the base of the energy pyramid and contains the most energy?

Back

Producers

Front

Which of the following best describes a consumer?

Back

An organism that gets its energy by eating other organisms, dead or alive.

Front

What are producers in an ecosystem?

Back

Organisms that produce their own food through photosynthesis or chemosynthesis.

Front

What is a trophic level?

Back

The position an organism occupies in a food chain, which determines its role in the energy flow.

Front

What is the role of decomposers in an ecosystem?

Back

Decomposers break down dead organic matter, recycling nutrients back into the ecosystem.

Front

What is the difference between primary and secondary consumers?

Back

Primary consumers eat producers, while secondary consumers eat primary consumers.

Front

What is an energy pyramid?

Back

A graphical representation showing the flow of energy at different trophic levels in an ecosystem.