biodiversity miniquiz #1

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 kilometers from a continent would have a higher number of species than one that is 15 kilometers from a continent? A There are more species that have the ability to travel 5 kilometers than can travel 15 kilometers. B Islands that are closer to continents always have a wider range of habitats than more distant islands do. C There are smaller populations of each species on islands that are at greater distances from continents. D Islands that are closer to continents always have more ecological niches than more distant islands do.

A

Which of the following would be categorized as a cultural ecosystem service of forests? A Recreation and scenic areas for tourism B Timber and landscape materials C Mushroom and plant harvests D Soil stabilization and air purification

A Recreation and scenic areas for tourism

DIAGRAM ON APC Scientists are interested in determining the average number of species that have migrated from the mainland to a group of islands, as shown below. Partway through their study, they decided to include an additional island in their study group. Based on the theory of island biogeography, which of the following best explains how the scientists' calculation of average number of species would change with the inclusion of this new island in their study? A The average would increase because more species would have migrated directly to the farther island. B The average would decrease because fewer species would have migrated directly to the farther island. C The average would not change because it is likely that the additional island has about the same number of species that migrated as the original island group. D The average would not change because the island is approximately the same size as those in the original group and therefore just as likely to recruit species from the mainland.

B

DIAGRAM ON APC The diagram shows how a patch of habitat could possibly be altered. Which of the following would be most likely to occur in the scenarios that have experienced habitat loss and/or fragmentation in the diagram? A Increase in territory size of large mammals B Increase in genetic diversity of native species C Decrease in the number of specialist species D Decrease in the abundance of invasive species

C

Which of the following is a measure of the biodiversity of an ecosystem? A The total number of individuals of a single animal species B The density of individuals in a hectare C The total number of different plant species D The soil depth at which burrowing insects are located

C

Which of the following would most likely result from the deforestation of large areas of tropical rain forests caused by slash-and-burn agriculture? A Increased ozone thinning because of the release of CFCs B Decreased acid rain because of the sequestration of SO2SO2 C Increased global temperature because of the release of CO2CO2 D Deceased evaporation because of the loss of the tree canopy

C Increased global temperature because of the release of CO2

All of the following are negative externalities EXCEPT A illnesses related to living near a manufacturing facility B noise associated with living near a major airport C air pollution caused by refinery emissions D bees pollinating vegetables in addition to creating honey E damage to crops from automobile exhaust

D

GRAPH ON APC Which of the following examples illustrates the community with the highest biodiversity? A B C D

D

Which of the following statements about levels of biodiversity is correct? A Genetic biodiversity is a measure of the total number of genes in a community. B A narrow distribution of habitats leads to an increase in species diversity. C Global hotspots are areas where species diversity is thriving due to habitat restoration. D A population with high genetic biodiversity is better able to respond to environmental stressors.

D

Which of the following can be used to assess the biological diversity of an area? A Population size of each species and area occupied by each population B Minimum population area and minimum viable population size C Ratio of r-strategists to K-strategists and life expectancy of K-strategists D Number of individuals under fifteen years old and number of individuals over sixty-five years old E Genetic variation within each species and number of species present

E