8.L.3.1 Review Questions

Which best explains the relationship between the human and fox populations in the ecosystem?

• Humans compete for the same prey as foxes, causing the fox population to drop.

• Humans compete for the same space as foxes, causing the fox population to drop.

• Humans are affected by the same diseases as foxes, causing both populations to change in the same way.

• Humans are affected by the same predators as foxes, causing both populations to change in the same way.

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NGSS.MS-LS2-2

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How would the rabbit population be affected if land was cleared to build a housing development?

• The rabbit population would increase.

• The rabbit population would decrease.

• The rabbit population would remain stable.

• The rabbit population would rise temporarily, then fall.

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NGSS.MS-LS2-1

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How will the owls most likely be affected by a sudden sharp increase in local populations of rodents?

• The owl population will either stabilize or increase.

• The owl population will migrate to another area.

• The owls will have to find another food source or risk starvation.

• Owls will have to compete more with each other for available food.

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NGSS.MS-LS2-1

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An experiment is set up in 3 sealed test tubes. The contents of each tube are shown in the table below: Test Tube | Contents --- | --- 1 | 30 mL water, Elodea water plant 2 | 30 mL water, water snail 3 | 30 mL water, Elodea water plant, water snail After 3 days, the snail in test tube 2 is dead, but the snail in test tube 3 is still alive. Which best explains this?

• The snail in test tube 3 had a limited food source.

• The snail in test tube 2 did not have an adequate water supply.

• The snail in test tube 3 was provided with oxygen by the Elodea.

• The snail in test tube 2 did not find the carbon dioxide it needed to create food.

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NGSS.MS-LS2-1

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Which organisms would most likely compete for food resources?

• R and S

• S and T

• T and W

• V and W

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NGSS.MS-LS2-1

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Which conclusion can best be drawn from the graph?

• Paramecia X are larger in size than Paramecia Y.

• Paramecia Y are less susceptible to disease than Paramecia X.

• Paramecia X are better adapted to compete for food than Paramecia Y.

• Paramecia Y are able to find food only when Paramecia X are present.

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NGSS.MS-LS2-2

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According to the graph, which variable has the greatest effect on population size?

• size of tank

• species of zooplankton

• amount of water in tank

• amount of food provided

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NGSS.MS-LS2-1

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Which would a drought most likely affect?

• all organisms in a particular ecosystem

• only the plants in a particular ecosystem

• only the animals in a particular ecosystem

• only the microorganisms in a particular ecosystem

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One male and one female goldfish are placed into a 5-gallon aquarium and are fed each day. One male and one female goldfish are placed into a 10-gallon aquarium and are fed each day. Which most likely represents the number of goldfish in each aquarium after several months?

• 2 goldfish in 5-gallon aquarium; 2 goldfish in 10-gallon aquarium

• 5 goldfish in 5-gallon aquarium; 12 goldfish in 10-gallon aquarium

• 12 goldfish in 5-gallon aquarium; 5 goldfish in 10-gallon aquarium

• 10 goldfish in 5-gallon aquarium; 10 goldfish in 10-gallon aquarium

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NGSS.MS-LS1-5

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Which most likely describes the effect of removing shelter from an ecosystem while increasing a population?

• The population will decrease due to lack of space and food.

• The population will increase due to lack of shelter and available food.

• The population will increase, then decrease due to lack of biotic factors.

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NGSS.MS-LS2-1

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