TCI Food Webs & Trophic Pyramids

A food web is a model that shows....

• the way different organisms use the energy they obtain from their food.

• the number of available food sources in any given ecosystem.

• the feeding relationships between organisms in an ecosystem.

Tags

NGSS.MS-LS2-3

How do food webs represent the flow of energy in the model?

• Food web models represent energy flow using arrows.

• Food web models represent energy flow by separating predator and prey.

• Food web models represent energy flow through chemical reaction equations

Tags

NGSS.MS-LS2-3

Matter flowing through a food web...

• take one path.

• can take more than one path.

• always takes the same path.

Tags

NGSS.MS-LS2-3

A food chain is...

• a term to describe how matter is recycled in a food web.

• a list of available prey for predators.

• an individual path in a food web.

Tags

NGSS.MS-LS2-3

Which of these describes a purpose of a food chain?

• A food chain attracts predators to available prey.

• A food chain tracks the transfer of matter and energy.

• A food chain teaches scientists how to add more predators to an ecosystem.

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NGSS.MS-LS2-2

NGSS.MS-LS2-3

Which of these describes a direct effect of an interaction in a food web?

• An increase in rabbits causes a decrease in plant populations.

• An increase in rain causes an increase of coyotes

• An increase in humans causes a decrease in supermarkets.

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NGSS.MS-LS2-1

NGSS.MS-LS2-4

An indirect effect is an interaction in a food web where...

• a natural disaster affects the total populations of all organisms in a food web.

• one population affects the abundance of another through its effect on a third population.

• matter and energy suddenly are transferred in a different direction than they hand been flowing.

Tags

NGSS.MS-LS2-2

NGSS.MS-LS2-4

Which of these is a decomposer?

• bacteria

• a fox

• a hummingbird

Which of these is NOT a form of waste?

• mushrooms

• dung

• dead leaves

How is a decomposer also a consumer?

• A decomposer only eats consumers.

• A decomposer consumes the remains of other organisms.

• A decomposer consumes only energy, but no matter.

Tags

NGSS.MS-LS2-3