ch02 - Chapter 2 Evolution: Why Are There So Many Living...

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Chapter 2 Evolution: Why Are There So Many Living Things? 1. The question, “Why are there are so many different forms of life?” a. was originated by Charles Darwin b. preceded Charles Darwin c. was never really considered by Charles Darwin d. destroyed the reputation of Erasmus Darwin e. eluded Charles Darwin Ans: b 2. Whose theory stating that geologic change takes place extremely slowly, influenced Charles Darwin's development of the theory of evolution by natural selection? a. Charles Lyell b. Thomas Henry Huxley c. Erasmus Darwin d. Jean Baptiste Lamarck e. Gregor Mendel Ans: a 3. An early-proposed evolutionary scheme suggested that physical traits acquired by an animal during its lifetime could be passed on to its offspring. Who was responsible for this theory? a. Buffon b. Charles Darwin c. Gregor Mendel d. Erasmus Darwin e. Jean Lamarck Ans: e 4. Which of the following is an example of an acquired trait and not an inheritable trait? a. Color of feathers of a blue goose b. Short legs on a rabbit 10
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Chapter 2 c. Large muscles from weight lifting d. Beak size and shape of a bird e. Long spines on a cactus Ans: c 5. Charles Darwin was a keen observer. All of the following are major observational points that Darwin made EXCEPT: a. Populations have the potential to increase exponentially b. Populations are fairly constant in size c. Individuals are genetically modified by unfavorable living conditions d. Natural resources are limited e. There is variation within a species, and variation is inherited Ans: c 6. In order for a population to remain relatively constant and thus stable, what must happen? a. the population must reproduce exponentially b. the death rate must increase c. the birth rate must remain constant d. births should match deaths e. the death rate must stay constant Ans: d 7. Natural selection a. favors the better adapted and selects against the less well adapted b. modifies individuals according to their natural abilities c. affects all individuals in the population exactly the same way d. accounts for the extinction of dinosaurs e. all of the above Ans: a 8. Natural resources can serve as limiting factors for population growth. Which of the following natural resources would tend to instigate competition within a species and thus limit its population size? a. space 11
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Chapter 2 b. food c. shelter d. fresh water e. all of the above Ans: e 9. All of the following contribute indirect evidence supporting the theory of evolution and natural selection EXCEPT a. Fossil record showing clear relationship between living and extinct animals b. Selective breeding of domesticated animals and plants c. Homologous structures in different organisms that are dissimilar in form and function but that have underlying structural similarities d. Analogous structures that have similar form and function but differ structurally e. Acquired characteristics that are obtained through an action and subsequently passed down to the next generation Ans: e 10. For two organisms to be of the same species, they must be:
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ch02 - Chapter 2 Evolution: Why Are There So Many Living...

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