Models of energy flow

Each step in a food chain or food web is called a——————

• energy flows

• trophic level.

• ecosystem

• biomass

food chain is

• A chain that shows how heat passes from organism to organism.

• A food chain provides a more complete model of feeding relationships within a community.

• A way of showing how matter and energy pass from one organism to another.

What 's a food web?

• A representation of all the feeding relationships within a community.

• A food chain provides a more complete model of feeding relationships within a community .

• A way of showing how matter and energy pass from one organism to another

rrows represent the one-way energy flow which typically starts with ————— and moves to —————.

• autotrophs -heterotrophs

• heterotrophs-autotrophs

What percentage of energy is passed on to each trophic level ?

• 100%

• 20%

• 90%

• 10%

Why is some energy not passed on to the next trophic level?

• Most energy is absorbed by the soil instead.

• most of the energy contained in the organisms at each level is consumed by cellular processes or released to the environment as heat.

• The statement is NOT true. All energy IS passed from one trophic level to the next.

• Decomposer

• Producer

• Secondary Consumer

• Primary Consumer

The————have most energy

• Animal

• Fungi

• Plant

All three models of the pyramids show how matter and energy move through an ecosystem.

• true

• false

the total mass of living matter at each trophic level—-----decreases at each trophic level.

• Biomass

• Food chain

• Trophic level

• Pyramid