Food Webs and Food Chains Flashcards Preview

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Flashcards in Food Webs and Food Chains Deck (7)
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1

what is a food web?

a system of interlocking and interdependent food chains.

2

what is a food chain?

a series of organisms dependant on the next as a source of food, always beginning with a producer and typically ending with an apex predator or decomposer.

3

what is a trophic level?

any of the sequential stages in a food chain occupied by producers at the bottom and primary, secondary, and tertiary consumers consecutively.

4

what is a producer?

producers are organisms that make energy through their own biochemical processes.

5

what is a consumer?

consumers are organisms that need to eat food to obtain energy.

6

what is a decomposer?

decomposers are organisms that break down dead or decaying waste.

7

what is the purpose of an energy pyramid?

an energy pyramid is a model that shows the flow of energy from one trophic, as each level progresses it loses 90% of the level below it.