15 - Biology: Concepts and Connections, 6e (Campbell)...

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Unformatted text preview: Biology: Concepts and Connections, 6e (Campbell) Chapter 15 1 Tracing Evolutionar y History Multiple-Choice Questions 1) Which of the following statements correctly describes the relationship between pterosaurs and birds? A) Birds descend from pterosaurs and inherited their flight ability from them. B) Birds descend from feathered dinosaurs. Pterosaurs are a distinct group that went extinct about the time that birds arose. C) Birds, bats, and pterosaurs are all descendants of a common winged ancestor. D) Birds have membranous wings, which distinguishes them from pterosaurs, which were feathered. E) The evolutionary relationship between birds and pterosaurs remains uncertain because no fossils exist that help to determine the relationship. Answer: B Topic: Opening Essay Skill: Conceptual Understanding 2) The "big bang" that produced the universe is thought to have occurred A) 50 trillion years ago. B) 40 billion years ago. C) 10 to 20 billion years ago. D) 4.6 billion years ago. E) 4 million years ago. Answer: C Topic: 15.1 Skill: Factual Recall 3) When the Earth first solidified, what were conditions like? A) The atmosphere was similar to today's atmosphere, but there was more volcanic activity. B) The atmosphere was rich in gases released in volcanic eruptions, but otherwise physical conditions were similar to those seen on Earth today. C) The atmosphere was rich in gases released in volcanic eruptions, and volcanic activity was intense, but very little ultraviolet light reached Earth's surface because of the thick atmosphere. D) The atmosphere was rich in gases released in volcanic eruptions; volcanic activity, lightning, and ultraviolet radiation were all much more intense than on today's Earth. E) It was just like Earth today, except there was no life. Answer: D Topic: 15.1 Skill: Factual Recall 4) The earliest discovered fossils are of ________ dating back to ________ years ago. A) single-celled eukaryotes . . . 4.5 billion B) prokaryotes . . . 3.5 billion C) algae . . . 1 billion D) fish . . . 600 million E) dinosaurs . . . 180 million Answer: B Topic: 15.1 Skill: Factual Recall 5) The findings of Pasteur and others have established that A) living organisms regularly self-assemble (arise spontaneously) from nonliving matter. B) living organisms do not arise from nonliving matter today, nor did they arise from nonlife in the past. C) advanced organisms cannot arise from nonliving matter, but simple microbial life often does arise from nonlife today. D) even advanced...
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15 - Biology: Concepts and Connections, 6e (Campbell)...

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