BIO 322 – Exam Questions and 100% Correct Answers

Efforts to recover populations of the red wolf, Canis rufus, are controversial because the red wolf may be the result of gray wolf-coyote hybridization rather than a true species. Under which species concept is the total number of recognized species likely to be largest? Phylogenetic species concept A species that is geographically limited to only one defined area is referred to as endemic Which of the following is NOT a plausible explanation for the mismatch between the predicted number of extinctions and the number of extinctions actually observed in historic times? No one has bothered to try to document actual extinctions. Which of the following statements regarding the diversity of life is NOT supported by the data shown in the figure? (Figure of named vs unnamed species) Crustaceans are more diverse than arachnids. Using the following figure, which of the following statements is NOT consistent with the patterns revealed by the fossil record? (# of taxanomic families vs MYA ago) Humans are currently causing a sixth mass extinction event. According to the figure below, which of the following groups has the greatest rate of extinction risk (measured as the percentage of species considered vulnerable, imperiled, critically imperiled, or possibly extinct)? Animals (both vertebrates and invertebrates) associated with freshwater habitats Which of the following statements best describes the species-area relationship in the figure below? Larger areas tend to harbor more species than smaller areas, but the rate at which new species accumulate decreases when moving from very small to larger and larger areas. Imagine that the starting point is 3,000 hectares (ha) and a landowner decides to convert 2,000 ha of that remaining area to a giant soybean field. According to this graph below, approximately how many of the original species are predicted to become extinct as a result (Species-are curve)? About 12 species will become extinct.