Collins I

1. Collins I • List and describe three levels of biodiversity

2. 1. What does this picture represent?

3. 2. What does this picture represent?

4. 3. What type of diversity is shown here?

5. 4. refers to the number of different species in an area • Biodiversity • Genetic diversity • Density • Dispersion

6. 5. the known species is 1.7 million, most of them are • Beetles • Birds • Reptiles • Insects

7. 6. Many unidentified species may be in the • Remote wilderness • Oceans • Swamps • All of the above • A & B only

8. 7. number of different species in an area; also known as biodiversity • Genetic diversity • Ecosystem diversity • Species diversity • diversity

9. 8. all of the different genes contained by the members of a population • Genetic diversity • Ecosystem diversity • Species diversity • diversity

10. 9. variety of habitats, communities, and ecological processes • Genetic diversity • Ecosystem diversity • Species diversity • diversity

11. 10. Species are part of these cycles • Food web • Carbon cycle • Nitrogen cycle • All of the above

12. 11. The ecosystem changes or collapses with out this species. • Critical species • Endangered species • Keystone species • Dependent species

13. 12. …are less likely to survive changes. • Large, isolated populations • Small, isolated populations • Large, crowded populations • Small, crowded populations

14. 13. About 25% of the drugs prescribed in the United States come from • Remote wilderness • Oceans • Plants • animals

15. Reasons Why We Should Preserve Biodiversity: • Ethics • Recreation • Aesthetics • All of the above • A & B only

16. a species that is likely to become extinct if protective measures are not taken immediately • Extinct • Threatened • Endangered • endemic

17. a species that has declining populations and is likely to become endangered • Extinct • Threatened • Endangered • endemic

18. is when we break a habitat up into smaller parts. • Habitat destruction • Deforestation • Poaching • fragmentation

19. As our population grows we build more homes and use more resources. • Habitat destruction • Deforestation • Poaching • fragmentation

20. species that are not native to a particular region. • Exotic • Endemic • Transplants • foreign

21. These species may become________, meaning they take over, because they have no predators to control their populations. • Endemic • Exotic • Endangered • invasive

22. illegal hunting of a species • Overfishing • Overhunting • Poaching • trapping

23. Many countries now have laws to regulate • Hunting • Fishing • Harvesting • All of the above

24. species that are native to and found only within a limited area • Exotic • Native • Endangered • endemic

25. scientists estimate that over half of the world’s species live there! • Coral reefs • Deep oceans • Coastal waters • Tropical rainforest

26. occupy only a small fraction of the marine environment yet contain a majority of the oceans biodiversity • Islands • Deep waters • Coral reefs • Costal waters • C & D

27. The most threatened areas of high species diversity have been labeled • Hotspots • Endangered • At risk • Critical

28. Hotspots are mostly located in • Rainforest • Coastal waters • Islands • None of the above • All of the above