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Name: ____________________________________ Class: _____________ Date: _____________ Lesson Assessment: Speciation 1. A pattern of sudden rapid speciation followed by long periods of little change in species is called _____. a) mutation b) polyploidy c) anagenesis d) punctuated equilibrium 2. What type of speciation generally occurs as a result of geographic isolation? a) hybrid b) allopatric c) polyploid d) quantum 3. In California there are two species of oaks. One occurs in fertile valley soils and the other occurs in scrub brush areas. What type of isolation prevents these two species from forming a hybrid? a) mechanical b) temporal c) ecological d) behavioral 4. There are many cases of differing floral structure in the orchid family in which natural pollinators do not cross pollinate, even when individuals of the two species grow side by side. What type of reproductive isolation is this? a) geographical b) ecological c) behavioral d) mechanical 5. Occasionally, it is possible to produce an infertile hybrid, such as a mule, which is created by the mating of a male donkey and a female horse. What type of isolating mechanism is involved in this scenario? a) allopatric b) postzygotic c) sympatric d) prezygotic PAGE 1 Name: ____________________________________ Class: _____________ Date: _____________ Lesson Assessment: Speciation 6. A single population of a species changes enough over time to be designated a new species while the old species dies out. This process is called _____. a) quantum speciation b) polyploidy c) anagenesis d) extinction 7. Darwin's finches are an example of _____. a) divergent speciation b) adaptive radiation c) genetic bottleneck d) reproductive isolation 8. What type of speciation occurs when one of the isolated populations has very few individuals? a) sympatric b) peripatric c) allopatric d) parapatric 9. Which of the following processes is NOT a part of adaptive radiation? a) competition for resources b) sympatric speciation c) reproductive isolation d) divergence caused by natural selection in different environments 10. Most of the marsupial species on Earth survive in Australia. This isolation occurred when the continent of Australia split off from the other continents. What type of isolation is this? a) behavioral b) ecological c) temporal d) geographical PAGE 2 ANSWER KEY 1. d 2. b 3. c 4. d 5. b 6. c ANSWER KEY Page 1 7. b 8. b 9. b 10. d
