Ecology Review

Which organisms are found at level Y?

• producers

• primary consumers

• secondary consumers

• tertiary consumers

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NGSS.MS-LS2-3

NGSS.MS-LS2-2

The diagram represents a possible forest food web. If a disease killed the entire rabbit population, which effects would most likely occur?

• the grasshopper population would decrease

• the plant population would decrease

• the wolf population would decrease

• the frog population would increase

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NGSS.MS-LS2-4

NGSS.MS-LS2-1

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In order for an ecological pyramid of biomass to remain stable and support an ecosystem, which trophic levels will have to remain the largest in the majority of ecosystems?

• primary producers

• primary consumers

• tertiary consumers

• secondary consumers

Ecologists estimate that only 10% of the energy at a trophic level is available to the next trophic level. Which best explains why this occurs?

• the energy is absorbed as heat

• the trophic level stores the energy for later use

• the energy is converted to carbon dioxide & water

• organisms use this energy for their own life processes

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NGSS.MS-LS2-3

In which level is most of the available energy located within an energy pyramid?

• the producer level has the largest amount of available energy because it stores energy from the sun and supports all other trophic levels

• the first-order consumer has the largest amount of available energy because it requires less energy to digest its vegetarian diet

• the second-order consumer has the largest amount of available energy because more energy is obtained from a meat-eating diet than from plants

• the third-order consumer has the largest amount of available energy because it is at the top of the energy pyramid

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NGSS.MS-LS2-3

NGSS.MS-LS1-6

What is the function of autotrophs in the carbon cycle?

• to use oxygen to produce glucose

• to take in excess water

• to use carbon dioxide to produce glucose

• to feed on herbivores

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NGSS.MS-LS2-3

NGSS.MS-LS1-6

Transpiration is an important component of which cycle?

• water

• oxygen

• nitrogen

• carbon

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NGSS.MS-ESS2-4

What impact does deforestation have on the environment?

• it reduces the amount of oxygen released

• it increases the amount of oxygen released

• it does not have any effect on the cycling of oxygen in nature

• it helps to maintain balance by increasing the amount of nitrogen used by bacteria

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NGSS.MS-LS2-4

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NGSS.MS-LS2-3

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The process of rain forest deforestation affects ecosystems on a global scale. Wildlife, people, and climate can be affected. One of the long-term effects of deforestation is that

• biodiversity will continue to increase

• organisms may become extinct

• more plants used for medicines can be discovered

• there will be an increase in the gene pool for future organisms

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NGSS.HS-LS4-5

Matter cycles between the environment and living organisms in a complex web of interactions. Which organisms provide the important link in box A from dead organic matter to matter from the environment?

• autotrophs

• decomposers

• parasites

• photosynthesizers

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NGSS.MS-LS2-3