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Biology Chapter 15 Test Evolution Multiple Choice Identify the letter of the choice that best completes the statement or answers the question. ____ ____ ____ ____ ____ ____ ____ ____ ____ 1. On the Galápagos Islands, Charles Darwin observed a. completely unrelated species on each of the islands. b. species exactly like those found in South America. c. somewhat similar species with traits that suited their particular environment. d. species completely unrelated to those found in South America. 2. The species of tortoises that Darwin found on the Galápagos Islands displayed different structural adaptations. One of the adaptations that Darwin noted was the a. similarity in the tortoises’ embryos. b. difference in shell markings of the tortoises. c. variation in length of the tortoises’ necks. d. difference in number of eggs in each tortoise’s nest. 3. One scientist who attempted to explain how rock layers form and change over time was a. Thomas Malthus. c. Charles Darwin. b. James Hutton. d. Jean-Baptiste Lamarck. 4. Lamarck proposed that organisms a. have an innate tendency toward complexity and perfection. b. have an innate tendency to become more simple as time passes. c. inherit all of the adaptations they display. d. belong to species that never change. 5. When Darwin returned from the voyage of the Beagle, he a. immediately published his ideas about evolution. b. realized his ideas about evolution were wrong. c. wrote about his ideas but waited many years to publish them. d. copied the evolutionary theory of Wallace. 6. According to Darwin’s theory of natural selection, the individuals that tend to survive are those that have a. characteristics their parents acquired by use and disuse. b. characteristics that plant and animal breeders value. c. the greatest number of offspring. d. variations best suited to the environment. 7. The number and location of bones of many fossil vertebrates are similar to those in living vertebrates. Most biologists would probably explain this fact on the basis of a. the needs of the organisms. c. the struggle for existence. b. a common ancestor. d. the inheritance of acquired traits. 8. Darwin’s theory of evolution is based on the idea(s) of a. natural variation and natural selection. b. use and disuse. c. a tendency toward perfect, unchanging species. d. the transmission of acquired characteristics. 9. James Hutton’s and Charles Lyell’s work suggested that a. Earth is many millions of years old. b. Earth is several thousand years old. c. all fossils were formed in the last one thousand years. d. all rocks on Earth contain fossils. ____ 10. In 1859, Darwin published his revolutionary scientific ideas in a work entitled a. Principles of Geology. b. Essay on the Principle of Population. c. Evolution in Malaysia. d. On the Origin of Species. ____ 11. When a farmer breeds only his or her best livestock, the process involved is a. natural selection. c. artificial variation. b. artificial selection. d. survival of the fittest. ____ 12. An adaptation is an inherited characteristic that can be a. physical or behavioral. b. physical or geographical. c. acquired during the organism’s lifetime. d. the result of artificial selection. ____ 13. Darwin called the ability of an organism to survive and reproduce in its environment a. diversity. c. adaptation. b. fitness. d. evolution. ____ 14. In humans, the pelvis and the femur, or thighbone, are involved in walking. In whales, the pelvis and femur shown in Figure 15–2 a. examples of fossils. c. acquired traits. b. vestigial structures. d. examples of natural variation. ____ 15. Which statement is in agreement with Darwin’s theory of evolution? a. More offspring are produced than can possibly survive. b. The organisms that are the fittest are always the largest and strongest. c. The number of offspring is not related to fitness. d. Acquired characteristics that are inherited are the cause of evolution. Completion Complete each sentence or statement. 16. Darwin concluded that in similar environments around the world, _________________________ could produce similar structures in unrelated species. 17. According to Darwin’s theory of evolution, all species on Earth are united by _________________________. 18. Darwin proposed that natural selection takes place as individuals best suited to the ____________________ survive and reproduce. 19. Darwin observed that instead of being perfect and unchanging, individuals in a species show ____________________. Other USING SCIENCE SKILLS Figure 15–1 20. Interpreting Graphics What differences are apparent in the bodies of the three tortoise species shown in Figure 15-1? 21. Inferring Vegetation on Hood Island is sparse and sometimes hard to reach. How might the vegetation have affected the evolution of the Hood Island tortoise shown in Figure 15-1? 22. Forming Hypotheses Considering the body structures of the tortoises shown in Figure 15-1, which tortoises—a population from Pinta Island or a population from Isabela Island—might survive more successfully on Hood Island? Why?