Regents Ecology

A model that shows the flow of energy in an ecosystem from producers to consumers. As energy flows up this model, it decreases being lost as heat.

• Food Web

• Food Chain

• Energy Pyramid

• Line Graph

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The most biodiverse and stable stage of ecological succession.

• Pioneer Species

• Climax Community

• Shrubs and Grasses

• Predator

Those resources that are unable to be replaced and, once used up,are gone. Fossil fuels are examples of this type of resource.

• Renewable Resources

• Non Renewable Resources

• Sun Energy

• Biotic

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Organisms that feed exclusively on other animals,example - a fox.

• Herbivore

• Omnivore

• Carnivore

• Heterotroph

Humans have an effect on ecosystems when they use native grasslands or forested areas for farming or urban use. One negative effect of these changes on the ecosystem is that there will be

• Less biodiversity

• More homes

• Successful economic growth

• Increased food production

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Based on this information, which ecosystem is likely to be the most stable?

• A

• B

• C

• D

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The organisms represented by X are

• Decomposes

• Producers

• Carnivores

• Scavengers

Organisms high on the food chain have _____ energy available to them and must have _____ populations.

• more, larger

• less, smaller

• more, smaller

• less, larger

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Energy comes from the Sun and is made usable by _________.

• producers

• primary consumers

• decomposers

• autotrophs

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What environmental factor can determine the which organisms can live in an ecosystem and how large the population can get?

• air

• water

• light

• food

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