Energy Flow Through Ecosystems

Each level of an energy pyramid is known as a:

• energy level

• trophic level

• consumer level

• transfer level

Any organism that is found on the 3rd level of an energy pyramid is known as a:

• producer

• tertiary consumer

• secondary consumer

• apex predator

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Which is true about the predator/prey relationship?

• all predators are considered apex predators

• there will be more prey than predators in an ecosystem

• there will be more predators than prey in an ecosystem

• organisms can be both predators and prey

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Apex predators are:

• those organisms not hunted by other organisms

• those organisms that are only hunted by omnivores

• those organisms that only consume plant material

• those organisms that are larger in size

In any ecosystem, humans would be considered

• decomposers

• herbivores

• omnivores

• scavengers

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Why is it rare to have more than one apex predator in an ecosytem?

• there is usually not enough space for both

• there is usually not enough food for both

• there is usually not enough breathable oxygen for both

• all apex predators will hunt the other apex predators

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All tertiary consumers are this type of consumer:

• decomposers

• omnivores

• herbivores

• carnivores

In the food web shown, your apex predator(s) would be:

• buzzard and fox

• snake and fox

• fox

• buzzard

If the butterfly was removed from the food web shown, the frog would:

• die out

• begin to eat more snakes

• consume more grasshoppers and dragonflies

• begin to feed on ladybirds and greenflies

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Deer are organisms that feed only on producers. In an energy pyramid, the deer is known as a:

• secondary level

• tertiary consumer

• primary consumer

• apex predator

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