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MATCHING - Write the letter of the term or phrase that best matches the description. a. hybridsb. ecotourismc. biodiversityd. genetic diversitye. keystone species ______ 1. species that are critical to the functioning of an ecosystem______ 2. all the different genes contained in all members of a population______ 3. tourist experiences among unique wildlife and ecosystems______ 4. varieties developed by combining genetic material from other populations______ 5. the number and variety of different species in a given area MULTIPLE CHOICE - In the space provided, write the letter of the term or phrase that best completes each statement or best answers each question. ______ 6. Hunting sea otters along the U.S. Pacific coast resulted ina. an increase in biodiversity. c. a decrease in biodiversity.b. the extinction of kelp. d. a reduction in the sea urchin population. ______ 7. To which groups do most of the unknown species belong?a. mammals and trees c. bacteria and plantsb. insects and fungi d. protozoans and algae ______ 8. A crop that results from combining genetic materials is calleda. a hybrid variety. c. a bottleneck offspring.b. a keystone species. d. a wildflower species. ______ 9. Which level of biodiversity may still be reduced after a species recovers from a threat to its survival?a. ecosystem diversity c. population diversityb. genetic diversity d. species diversity ______10. How do people benefit from biodiversity?a. aesthetic or personal enjoyment c. source of new productsb. variety of food sources d. all of the above
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