Unit 2 Test

Which of the following statements about levels of biodiversity is correct?

A population with high genetic diversity is better able to respond to environmental stressors.

The consumption of mosquitoes by bats and the control of flooding provided by tropical rainforest and mountainous areas of Central America are examples of?

Ecosystem services

Which of the following best explains how environmental stressors, such as wildfires, can affect biodiversity in an ecosystem?

Ecosystems with more species diversity are more likely to recover after a disturbance than ecosystems with low species diversity.

Which of the following examples illustrates the community with the highest biodiversity?

Graph with each species having 10 individuals (D)

Living organisms must acquire energy from their environment.Examples of adaptions that help the organisms require this energy include which of the following?

I ( The dark, hear absorbing coloration of a reptile) and II ( the fangs and claws of a lion)

Which of the following would most likely result from the deforestation of large areas of tropical rain forests caused by slash-and-burn agriculture?

Increased global temperature because of the release of CO2.

Which of the following best explains why each of the finch species on the Galápagos Island evolved to be specialist?

Islands have limited food resources, forcing species to feed on a small range of food items.

Which of the following best describes the role of moss in the transition to stage iii of the process?

It breaks down rock and adds organic nutrients to the soil.

Which of the following best shows the process of evolution?

Population of mosquitoes develops resistance to a pesticide.

Which of the following best identifies and describes the process that is illustrated in the diagram above?

Primary succession, because the process in the diagram begins with bare rock.

Based on the data shown in the graph, which of the following events occurred after the glacial retreat?

Primary succession.

Based on the data shown in the graph, which of the following best describes how ecologist could determine when the ecosystem is approaching a climax community.

Record the number and type of producers present every year after the eruption.

Which of the following would be categorized as cultural ecosystem service of forests?

Recreation and scenic areas of tourism.

Which of the following best describes why secondary succession generally occurs more quickly than primary succession?

Secondary succession takes place in areas that already have soil and nutrients in place, whereas primary succession occurs in areas that lack soil.

For which of the following reasons do small islands have a greater rate of species extinction than larger, less isolated islands?

Small islands provide opportunities for a greater diversity of species.

Based on the theory of island biogeography, which of the following best explains how scientist calculation of average number of species with change of the inclusion of this new island and their territory?

The average would decrease because if you were species would have migrated directly to the father island.

If the pond is resampled in a year, which of the following would best indicate that the pond had been adversely affected by adjacent development?

The biodiversity of the pond has decreased.

Which of the following best identifies the author's claim?

The increased rainfall events in the United States are decreasing the tolerance of fish and other marine species in the Gulf of Mexico because of decreased concentration of oxygen.

Which of the following statements describes the trends seen in the data?

The lowest sea level occurred during the Paleogene period.

Which of the following statements best describes how the moths adapted to the new environment over time?

The moths adapted to the new environmental changes in the genetics of the population.

Small island is further from the main land and the large island is closer. Based on theory of biogeography, which of the following statements is most likely true about the small island when compared with the large island?

The rate of immigration is lower for the small island than for the large island.

Which of the following can be estimated from the sample for the invertebrates in the pond?

The species richness

Which of the following statements best explains the changes in the size and composition of the population of finches after the drought?

The total number of finches in the population decreased, and the larger-beaked finches were more successful in the drier environment.

Which of the following is a measure of biodiversity in an ecosystem?

The total number of plant species.

Based on the theory of island biogeography, which of the following is the most likely reason that an island in the ocean that is 5 km from a continent would have a higher number of species than one that is 15km from a continent?

There are more species that have the ability to travel 5km than can travel 15 km.