Trophic Pyramids

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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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 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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In a trophic pyramid, which level contains the most energy?

• Tertiary consumers

• Secondary consumers

• Primary consumers

• Producers

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Which of the following best explains why energy decreases at each successive trophic level in a food chain?

• Energy is destroyed as it moves up the trophic levels.

• Energy is lost as heat due to metabolic processes.

• Energy is converted into matter at higher trophic levels.

• Energy is stored indefinitely at each level.

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How does the concept of a trophic pyramid help in understanding energy flow in an ecosystem?

• It shows that energy is evenly distributed among all trophic levels.

• It illustrates that energy decreases as it moves up the trophic levels.

• It indicates that energy increases as it moves up the trophic levels.

• It demonstrates that energy is only present at the producer level.

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Predict the consequences of a decrease in producer population on the trophic pyramid.

• The entire pyramid would collapse due to lack of energy.

• The number of decomposers would increase.

• The biomass of primary consumers would increase.

• The energy flow would remain unchanged.

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Identify the role of producers in the trophic pyramid.

• They decompose organic matter.

• They convert solar energy into chemical energy through photosynthesis.

• They consume other organisms for energy.

• They store energy in the form of fat.

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Which of the following best describes a trophic pyramid?

• A diagram showing the number of organisms at each trophic level

• A chart of the energy flow in an ecosystem

• A representation of the biomass at each trophic level

• A list of all species in an ecosystem

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NGSS.MS-LS2-3

Analyze the impact of removing a top predator from a food chain.

• It would increase the number of producers.

• It would decrease the population of primary consumers.

• It would lead to an overpopulation of secondary consumers.

• It would have no effect on the ecosystem.

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