HSA Biology Public Release 2005 - mdk12

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Session 2 D irections Use the information and the figure below to answer Numbers 34 through 36. Scientists have recently discovered hydrothermal vent communities on the ocean floor. A diagram of a hydrothermal vent community is shown in the figure below. HYDROTHERMAL VENT COMMUNITY Vent Fish Sulfide-Rich Hot Water Vent Vent Vent Giant Tubeworms Limpets Polychaete Worms Octopus Giant White Clams Galatheid Crabs The organisms in this community live near heated vents. Inorganic compounds such as sulfides mix with extremely hot water when they are released from the vents. Bacteria use the sulfides to make food for themselves and other animals. Many of these bacteria live in the bodies of the giant tubeworms and the giant white clams that live in this community. Biology Public Release 2005 Page 24 Copyright © 2005 by Maryland State Department of Education.
Session 2 ■34 Hydrothermal vent communities are often destroyed by lava erupting from the ocean floor. After the lava has cooled, different organisms begin to inhabit the area. Over a period of a few years, organisms inhabit the area in the following order: sulfur bacteria → crabs→ giant tubeworms → clams and mussels ■36 Which of these is an abiotic factor that influences this ecosystem? F G H J food bacteria water temperature giant tubeworms Which of these best identifies this sequence of events? F G H evolution mutation succession ■35 J translation The bacteria that live in the bodies of the giant tubeworms and the giant white clams are classified as A B C D eukaryotes prokaryotes plants fungi Biology Public Release 2005 Page 25 Copyright © 2005 by Maryland State Department of Education.
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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
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Page 25: Session 2 ■33 Cells in the stomac
Page 29 and 30: Session 2 38 BCR Galactosemia is an
Page 31 and 32: Session 2 ■41 Which of these is p
Page 33 and 34: Session 2 ■42 Coyotes and gray wo
Page 35 and 36: Session 2 48 BCR Mammals are expose
Page 37 and 38: Session 2 ■53 A researcher recent

HSA Biology Public Release 2005 - mdk12

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