HSA Biology Public Release 2005 - mdk12

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Session 2 D irections Use the information and the food web below to answer Numbers 42 and 43. Part of the food web in Yellowstone National Park is shown below. YELLOWSTONE NATIONAL PARK FOOD WEB Gray Wolf Coyote Vole Elk Grass, Grain, Fruits Gray wolves were reintroduced into Yellowstone National Park in 1995. Two years later, the population of coyotes had decreased by 50%. Coyotes were found in all habitats of the park before the gray wolves were reintroduced. Now, coyotes are most often found in the hills and mountains. Biology Public Release 2005 Page 30 Copyright © 2005 by Maryland State Department of Education.
Session 2 ■42 Coyotes and gray wolves have a high degree of relatedness. Which of these best describes why the two species are closely related? F G H J They have similar behaviors. They have a common ancestor. They feed on the same types of food. They are found in the same habitat. ■43 Which of these describes the role of the vole in the Yellowstone ecosystem? A decomposer B C D producer herbivore carnivore ■44 Scientists estimate that 200 non-native organisms have been introduced into Chesapeake Bay. Which of these statements is not true about non-native organisms? F G H J They often form mutualistic relationships with native organisms. They can deplete the food sources of native organisms. They are often aggressive at acquiring and maintaining territory. They can prey on native organisms causing them to go extinct. (1)MDB01379 Biology Public Release 2005 Page 31 Copyright © 2005 by Maryland State Department of Education.
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Page 3 and 4: Session 1 Sample A Which of these i
Page 5 and 6: Session 1 ■3 The table below show
Page 7 and 8: Session 1 D irections Use the infor
Page 9 and 10: Session 1 ■9 The energy required
Page 11 and 12: Session 1 ■10 According to the pa
Page 15 and 16: Session 1 17 BCR Scientists are stu
Page 17 and 18: Session 1 ■21 Which of these orga
Page 21 and 22: Session 1 ■27 Hemoglobin is an im
Page 23 and 24: Session 2 Biology Public Release 20
Page 25 and 26: Session 2 ■33 Cells in the stomac
Page 27 and 28: Session 2 ■34 Hydrothermal vent c
Page 29 and 30: Session 2 38 BCR Galactosemia is an
Page 31: Session 2 ■41 Which of these is p
Page 35 and 36: Session 2 48 BCR Mammals are expose
Page 37 and 38: Session 2 ■53 A researcher recent

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