Chapter 25 Test Bank: Origin of Species and Macroevolution

1. The process of evolutionary changes that result in formation of new species and groups of species is called A. temporal evolution. B. artificial selection. C. macroevolution. D. serial evolution. E. a combination of temporal and serial evolution. Bloom's Level: Remember Section: 25.01 Topic: Evolution 2. If two populations are geographically restricted groups of the same species, but display one or more traits that are somewhat different, the two groups are sometimes classified as A. subspecies B. ecotypes C. macrospecies D. morphological species E. subspecies or ecotypes Bloom's Level: Remember Section: 25.01 Topic: Evolution 3. Which of the following mechanisms make it difficult to classify bacteria into different species groups? A. vertical evolution. B. horizontal gene transfer. C. sexual reproduction. D. asexual reproduction. E. low mutation rates. Bloom's Level: Understand Section: 25.01 Topic: Evolution 4. Morphological traits are commonly used to identify species, which of the following can also be used? A. The ability to interbreed. B. Molecular similarity (DNA and chromosome comparisons). C. Ecological factors. D. Evolutionary relationships. E. All of these. Bloom's Level: Understand Section: 25.01 Topic: Evolution 5. Species are identified based on a unique combination of physical or molecular characteristics under the A. phylogenetic species concept. B. biological species concept. C. evolutionary species concept. D. ecological species concept. E. general lineage concept. ..................................CONTINUED...............................