Unit 2 The Living World Exam Quizizz

Fragmenting one large park or preserve into many small parks with human habitation in between them is most likely to lead to which of the following?

• Reduction in species diversity

• Stabilization of microclimates

• Decrease in the proportion of edge habitat

• Increase in population size of carnivores

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The net annual primary productivity of a particular wetland ecosystem is found to be 10,000 kcal/m2 per year. If respiration by the aquatic producers is 21,000 kcal/m2 per year, what is the gross annual primary productivity for this ecosystem, in kcal/m2 per year?

• 11,000

• 21,000

• 31,000

• 41,000

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NGSS.MS-LS2-3

In general, which of the following is the best long-term method of preventing extinctions?

• Protecting the habitats of endangered species

• Paying people not to kill endangered species

• Removing predators from areas that contain endangered species

• Providing food to endangered species in the wild

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NGSS.MS-LS2-4

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If mean global temperature keeps on increasing as predicted by contemporary scientists, which of the following is most likely?

• There will be fewer insect pests and disease-carrying organisms

• Specialist species living in fragile ecosystems will risk extinction

• There will be an increase in the reproductive rate of mammals

• The geographical range of many plants will move toward the equator

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NGSS.MS-LS2-4

All of the following statements about the pyramid of biomass are correct EXCEPT:

• Biomass is the total dry mass of the organisms present.

• The amount of biomass at a particular level of the pyramid depends on the amount of energy available.

• The base of the pyramid generally represents primary consumers.

• Certain toxins tend to become concentrated at upper levels of the pyramid.

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NGSS.MS-LS2-3

Losses of usable energy between successive trophic levels in an ecosystem are best accounted for by which of the following?

• The first law of thermodynamics

• The second law of thermodynamics

• The law of conservation of matter

• The process of ecological succession

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NGSS.MS-LS2-3

Gradual transition over time from one type of biological community to another.

• Symbiosis

• Law of tolerance

• Ecological succession

• Energy pyramid

Which of the following statements about ecological succession is correct?

• Secondary succession is followed by primary succession.

• Primary succession occurs over a shorter time span than secondary succession.

• Succession is influenced by competition for limiting resources such as available soil, moisture, and nutrients.

• In forest succession, less shade-tolerant trees replace more shade-tolerant trees.

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NGSS.MS-LS2-1

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The theory of island biogeography suggests that species richness is affected by which of the following factors?

• Island distance from mainland

• How the island is formed

• Island size

• All of these are correct

Beginning at the lowest trophic level, arrange the following food chain found on the Serengeti Plain of Africa in the correct sequence.

• Shrubs–decomposers–gazelles–cheetahs

• Gazelles–decomposers–cheetahs–shrubs

• Shrubs–gazelles–cheetahs–decomposers

• Decomposers–cheetahs–shrubs–gazelles

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NGSS.MS-LS2-3