PCB 3043 Chapter 23 || 100% Exact Answers.
Select the statement that describes why different groups of conservationists may favor different
criteria when prioritizing biodiversity hotspots.
-Terrestrial biodiversity hotspots generally have higher ecological value than marine ecosystems.
-Areas with low species richness can still have higher conservation value.
-Areas with large numbers of animal species usually have low human population densities.
-Regions with high numbers of plant species tend to have low numbers of animal species. correct
answers -Areas with low species richness can still have higher conservation value.
Identify each statement as an example of the instrumental or intrinsic value of biodiversity in
species and ecosystems:
Penicillium fungi produce several families of penicillin antibiotics. correct answers Instrumental
value
Identify each statement as an example of the instrumental or intrinsic value of biodiversity in
species and ecosystems:
Millions of people visit the Grand Canyon each year. correct answers Instrumental value
Identify each statement as an example of the instrumental or intrinsic value of biodiversity in
species and ecosystems:
The oceans absorb tons of the carbon dioxide given off from human activity. correct answers
Instrumental value
Identify each statement as an example of the instrumental or intrinsic value of biodiversity in
species and ecosystems:
Maryland's citizens are concerned that their state bird, the oriole, is disappearing. correct answers
Intrinsic value
Identify each statement as an example of the instrumental or intrinsic value of biodiversity in
species and ecosystems:
Moral responsibility has led the U.S. to establish hundreds of wildlife refuges. correct answers
Intrinsic value
Biodiverse habitats offer several types of economic benefits that motivate conservation efforts:
Provisioning services
________________________________________________________________. correct answers
Provisioning services PROVIDE USEFUL PRODUCTS FOR HUMAN CONSUMPTION.
, Biodiverse habitats offer several types of economic benefits that motivate conservation efforts:
Regulating services
___________________________________________________________________. correct
answers Regulating services CONTROL THE CLIMATE AND ENVIRONMENTAL
CONDITIONS.
Biodiverse habitats offer several types of economic benefits that motivate conservation efforts:
Cultural services
______________________________________________________________________. correct
answers Cultural services PROMOTE TOURISM THROUGH RECREATIONAL
ATTRACTIONS.
Select the strategies that may slow the sixth mass extinction.
-Landscape fragmentation.
-Habitat protection.
-Species reintroductions.
-Increased harvesting. correct answers -Habitat protection.
-Species reintroductions.
Why is it important to preserve genetic diversity within a species?
-Individuals of a highly diverse species are all naturally resistant to pathogens.
-Populations cannot grow large unless the species has high levels of genetic diversity.
-High levels of genetic diversity help species adapt to changing environmental conditions.
-High genetic diversity always increases the economic benefits provided by an ecosystem.
correct answers -High levels of genetic diversity help species adapt to changing environmental
conditions.
What effects do regulations on harvesting at-risk fish species have on marine fisheries?
-Fewer collapses in ocean fisheries.
-Reduced job opportunities for fishers.
-Improved efficiency of fishing techniques.
-Faster declines in fish population sizes. correct answers -Fewer collapses in ocean fisheries.
-Reduced job opportunities for fishers.
Introduced species often prey upon native species or compete with them for resources.
Introduced predators drive declines in native species more often than introduced competitors do.
However, both predators and competitors can drive native species extinct.
Introduced competitors usually only compete for some of the resources that native species use.
Sometimes native species can survive if they are able to subsist on alternative food sources or
adjust to living in less favorable habitats. When it comes to food, a reduction in primary food
Select the statement that describes why different groups of conservationists may favor different
criteria when prioritizing biodiversity hotspots.
-Terrestrial biodiversity hotspots generally have higher ecological value than marine ecosystems.
-Areas with low species richness can still have higher conservation value.
-Areas with large numbers of animal species usually have low human population densities.
-Regions with high numbers of plant species tend to have low numbers of animal species. correct
answers -Areas with low species richness can still have higher conservation value.
Identify each statement as an example of the instrumental or intrinsic value of biodiversity in
species and ecosystems:
Penicillium fungi produce several families of penicillin antibiotics. correct answers Instrumental
value
Identify each statement as an example of the instrumental or intrinsic value of biodiversity in
species and ecosystems:
Millions of people visit the Grand Canyon each year. correct answers Instrumental value
Identify each statement as an example of the instrumental or intrinsic value of biodiversity in
species and ecosystems:
The oceans absorb tons of the carbon dioxide given off from human activity. correct answers
Instrumental value
Identify each statement as an example of the instrumental or intrinsic value of biodiversity in
species and ecosystems:
Maryland's citizens are concerned that their state bird, the oriole, is disappearing. correct answers
Intrinsic value
Identify each statement as an example of the instrumental or intrinsic value of biodiversity in
species and ecosystems:
Moral responsibility has led the U.S. to establish hundreds of wildlife refuges. correct answers
Intrinsic value
Biodiverse habitats offer several types of economic benefits that motivate conservation efforts:
Provisioning services
________________________________________________________________. correct answers
Provisioning services PROVIDE USEFUL PRODUCTS FOR HUMAN CONSUMPTION.
, Biodiverse habitats offer several types of economic benefits that motivate conservation efforts:
Regulating services
___________________________________________________________________. correct
answers Regulating services CONTROL THE CLIMATE AND ENVIRONMENTAL
CONDITIONS.
Biodiverse habitats offer several types of economic benefits that motivate conservation efforts:
Cultural services
______________________________________________________________________. correct
answers Cultural services PROMOTE TOURISM THROUGH RECREATIONAL
ATTRACTIONS.
Select the strategies that may slow the sixth mass extinction.
-Landscape fragmentation.
-Habitat protection.
-Species reintroductions.
-Increased harvesting. correct answers -Habitat protection.
-Species reintroductions.
Why is it important to preserve genetic diversity within a species?
-Individuals of a highly diverse species are all naturally resistant to pathogens.
-Populations cannot grow large unless the species has high levels of genetic diversity.
-High levels of genetic diversity help species adapt to changing environmental conditions.
-High genetic diversity always increases the economic benefits provided by an ecosystem.
correct answers -High levels of genetic diversity help species adapt to changing environmental
conditions.
What effects do regulations on harvesting at-risk fish species have on marine fisheries?
-Fewer collapses in ocean fisheries.
-Reduced job opportunities for fishers.
-Improved efficiency of fishing techniques.
-Faster declines in fish population sizes. correct answers -Fewer collapses in ocean fisheries.
-Reduced job opportunities for fishers.
Introduced species often prey upon native species or compete with them for resources.
Introduced predators drive declines in native species more often than introduced competitors do.
However, both predators and competitors can drive native species extinct.
Introduced competitors usually only compete for some of the resources that native species use.
Sometimes native species can survive if they are able to subsist on alternative food sources or
adjust to living in less favorable habitats. When it comes to food, a reduction in primary food
