Quiz on trophic pyramids

What happened when the wolves were removed from Yellowstone? Select one direct effect.

• The beaver had less to build with.

• The wolves were removed.

• The elk population exploded.

• Pollinators like bees had less flowers.

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What happened when the wolves were removed from Yellowstone? Select two indirect effects.

• The beaver had less to build with.

• The wolves were removed.

• The elk population exploded.

• Pollinators like bees had less flowers.

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What term best describes the terrible domino effect that took place once the wolves were removed from Yellowstone?

• trophic cascade

• direct effect

• indirect effect

• a pyramid scheme

• the domino effect

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Which term best fits this definition?

"An organism that eats plants"

• primary consumer

• producer

• secondary consumer

• 10% rule

Which term best fits this definition?

"An organism that makes its own food."

• primary consumer

• producer

• secondary consumer

• 10% rule

What is the big difference between a food chain and a food web? Select the two correct definitions.

• A food chain is a single line showing who eats who.

• A food web is similar to a food chain, but shows many plants and animals eating each other.

• A food chain is another term for the 10% rule.

• A food web is like a web of food. It shows tertiary consumer, primary consumers, producers as a big circle.

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Which is the likeliest outcome if an apex predator goes missing?

• The population of all other organisms will decline.

• The population of all other organisms will increase.

• Producers will rapidly decline.

• Their prey's population will be out of control, causing issues for all trophic levels.

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If the hawks suddenly disappeared, what could we expect to see happen to the other trophic levels?

• We'd expect the frog population to increase, causing the insect population to decrease, causing the plant population to increase.

• We'd expect the frog population to decrease, causing the insect population to increase, causing the plant population to decrease.

• We'd expect to see the pyramid remain about the same, since only the top part was taken and not a part farther down and more important.

• We'd expect to see the pyramid completely collapse, since the top was taken and that makes it the most important part, since that's where all of the energy comes from.

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If we have producers that are eaten by mice, and the mice are eaten by snakes, and the snakes are eaten by hawks...
What is the appropriate title for all organisms on the same tropic level as the snakes?

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We have heard about the 10% rule. What happens to the other 90% of the energy?

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