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Collins I • List and describe three levels of biodiversity 1. What does this picture represent? 2. What does this picture represent? 3. What type of diversity is shown here? 4. refers to the number of different species in an area A. B. C. D. Biodiversity Genetic diversity Density Dispersion 5. the known species is 1.7 million, most of them are A. B. C. D. Beetles Birds Reptiles Insects 6. Many unidentified species may be in the A. B. C. D. E. Remote wilderness Oceans Swamps All of the above A & B only 7. number of different species in an area; also known as biodiversity A. B. C. D. Genetic diversity Ecosystem diversity Species diversity diversity 8. all of the different genes contained by the members of a population A. B. C. D. Genetic diversity Ecosystem diversity Species diversity diversity 9. variety of habitats, communities, and ecological processes A. B. C. D. Genetic diversity Ecosystem diversity Species diversity diversity 10. Species are part of these cycles A. B. C. D. Food web Carbon cycle Nitrogen cycle All of the above 11. The ecosystem changes or collapses with out this species. A. B. C. D. Critical species Endangered species Keystone species Dependent species 12. …are less likely to survive changes. A. B. C. D. Large, isolated populations Small, isolated populations Large, crowded populations Small, crowded populations 13. About 25% of the drugs prescribed in the United States come from A. B. C. D. Remote wilderness Oceans Plants animals Reasons Why We Should Preserve Biodiversity: A. B. C. D. E. Ethics Recreation Aesthetics All of the above A & B only a species that is likely to become extinct if protective measures are not taken immediately A. B. C. D. Extinct Threatened Endangered endemic a species that has declining populations and is likely to become endangered A. B. C. D. Extinct Threatened Endangered endemic is when we break a habitat up into smaller parts. A. B. C. D. Habitat destruction Deforestation Poaching fragmentation As our population grows we build more homes and use more resources. A. B. C. D. Habitat destruction Deforestation Poaching fragmentation species that are not native to a particular region. A. B. C. D. Exotic Endemic Transplants foreign These species may become________, meaning they take over, because they have no predators to control their populations. A. B. C. D. Endemic Exotic Endangered invasive illegal hunting of a species A. B. C. D. Overfishing Overhunting Poaching trapping Many countries now have laws to regulate A. B. C. D. Hunting Fishing Harvesting All of the above species that are native to and found only within a limited area A. B. C. D. Exotic Native Endangered endemic scientists estimate that over half of the world’s species live there! A. B. C. D. Coral reefs Deep oceans Coastal waters Tropical rainforest occupy only a small fraction of the marine environment yet contain a majority of the oceans biodiversity A. B. C. D. E. Islands Deep waters Coral reefs Costal waters C&D The most threatened areas of high species diversity have been labeled A. B. C. D. Hotspots Endangered At risk Critical Hotspots are mostly located in A. B. C. D. E. Rainforest Coastal waters Islands None of the above All of the above
