24 - Biology 7e(Campbell Chapter 24 The Origin of Species 1...

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Biology, 7e (Campbell) Chapter 24: The Origin of Species 1) Which of the following applies to both anagenesis & cladogenesis? A) branching B) increased diversity C) speciation D) more species E) adaptive radiation Answer: C 2) Which of the following statements about species, as defined by the biological species concept, is (are) correct? I. Biological species are defined by reproductive isolation. II. Biological species are the model used for grouping extinct forms of life. III. The biological species is the largest unit of population in which successful reproduction is possible. A) I only B) II only C) I & III D) II & III E) I, II, & III Answer: C 3) What is generally true of two sibling species? A) They shared a common ancestor recently in evolutionary time. B) Genes are unable to pass from one sibling species' gene pool to the other's. C) They are unable to produce hybrid offspring upon interbreeding. D) Their reproductive isolation from each other is complete. E) They are the result of anagenesis. Answer: A 4) Which of the various species concepts identifies species based on the degree of genetic exchange between their gene pools? A) phylogenetic B) ecological C) biological D) morphological E) paleontological Answer: C 5) For which two species concepts are anatomical features the primary criterion for determining species identities? 1. biological 2. ecological 3. morphological 4. phylogenetic 5. paleontological A) 1 & 2 B) 1 & 3 C) 2 & 3 D) 3 & 5 E) 4 & 5 Answer: D 6) Successfully breeding two individual organisms at a zoo & obtaining fertile offspring for several generations is no guarantee that the same could occur in nature (i.e., in the wild). Which species concept becomes difficult to confirm because of this fact? A) biological B) ecological C) morphological D) phylogenetic 1
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E) paleontological Answer: A 8) A biologist discovers two populations of wolf spiders whose members appear identical. Members of one population are found in the leaf litter deep within a woods. Members of the other population are found in the grass at the edge of the woods. The biologist decides to designate the members of the two populations as two separate species. Which species concept is this biologist most closely utilizing? A) ecological B) biological C) morphological D) paleontological E) phylogenetic Answer: A 9) What was the species concept used by Linnaeus? A) biological B) morphological C) paleontological D) ecological E) phylogenetic Answer: B 10) You are confronted with a box of preserved grasshoppers of various species that are new to science & have not been described. Your assignment is to separate them into species. There is no accompanying information as to where or when they were collected. Which species concept will you have to use? A) biological
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This note was uploaded on 02/26/2011 for the course BIO 104 taught by Professor Smith during the Spring '11 term at Saddleback.

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24 - Biology 7e(Campbell Chapter 24 The Origin of Species 1...

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