EVS Energy Flow Quiz Fall 2024

Under normal conditions, which animals in this community would have the greatest amount of stored energy?

• Grasshoppers

• Snakes

• Spiders

• Hawks

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The energy of the sun is made available to the pond community through the activities of the organisms at level _____

• A

• B

• C

• D

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Which sequence best represents the flow of energy in the cartoon?

• Prey -> Predator

• Host -> Parasite

• Producer -> Herbivore

• Autotroph -> Carnivore

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1.      An insect known as a sawfly is found in evergreen forests in North America. Sawfly cocoons are the main source of food for shrews and some bird species. Scientists studied 1-acre plots in various parts of the state to determine the average number of sawfly cocoons, shrews, and robins. The data collected are shown in the table.

What would most likely happen to the number of sawfly cocoons per acre if the shrews and robins were removed from the area?

• The number of sawfly cocoons would decrease

• The number of sawfly cocoons would remain constant

• The number of sawfly cocoons would increase

• The number of sawfly cocoons would initially increase and would then decrease

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1.      Trees such as jack pine, yellow birch, red pine, and white pine may no longer be able to grow in the Great Lakes region because summers are becoming warmer. However, other trees such as black walnut and black cherry may grow in the area, given enough time. The change in weather would favor these new tree species. Recent research findings also suggest that algae production in Lake Ontario and several other Great Lakes will be affected as warmer weather led to warmer lake water. An increase in water temperature reduces the ability of the water to hold dissolved oxygen. These changes have implications for the entire Great Lakes food web. Changes in deep-water oxygen levels and other habitat changes may prevent the more sensitive cold-water fish from occupying their preferred niches in a warmer climate. Identify one producer found in the waters of Lake Ontario.

• Red Pine

• Alage

• Black Walnut

• Jack Pine

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Analysis of a sample taken from a pond showed variety in both number and type of organisms present. The data collected are shown in the table.

Which diagram best represents the organisms arranged as an energy pyramid?

• 
• 
• 
• 

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   The Pine Bush ecosystem near Albany New York, is one of the last known habitats of the nearly extinct Karner Blue butterfly. The butterfly’s larvae feed on the wild green plant, lupine. The larvae are in turn consumed by predatory wasps. The four groups below represent the other organisms living in this ecosystem.

Which food chain best represents the information in the passage?

• Lupine -> Karner Blue Larvae -> Wasps

• Wasps -> Karner Blue Larvae -> Lupine

• Karner Blue Larvae -> Lupine -> Wasps

• Lupine -> Wasps -> Karner Blue Larvae

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An energy pyramid is represented in the model. How much energy would be available to the organisms in level C?

• All of the energy at level A, plus the energy at level B

• All of the energy at level A, minus the energy at level B

• A percentage of the energy contained in level B

• A percentage of the energy synthesized in level B and level D

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The diagram represents the amount of available energy at successive nutrition levels in a particular food web. The Xs in the diagram represent the amount of energy that was most likely

• Changed into inorganic compounds

• Retained indefinitely by the herbivores

• Recycled back to the produers

• Lost as heat to the environment

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The diagram represents an energy pyramid constructed from data collected in an aquatic ecosystem. Which statement best describes this ecosystem?

• The ecosystem is most likely unstable

• Long-term stability of this ecosystem will continue

• The herbivore populations will continue to increase in size for many years

• The producer organisms outnumber the consumer organisms in this ecosystem

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