With ____ selection, the frequency of the mean phenotype decreases while the frequencies of extreme phenotypes
increase.
a. directional
b. stabilizing
c. disruptive
d. sexual
e. dominant
ANSWER: c
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A phylogenetic tree is actually a ____________ that depicts the evolutionary relationships among species.
A. drawing B. hypothesis C. theory D. paraphylogy E. monophylogy
Patterns of species change and succession are one focus of
A. behavioral ecology. B. environmental science. C. biological control. D. community ecology. E. physiological ecology.
Which terrestrial herbivore in Australia shares overall similarities in body form and ecological roles as the distantly
related North American woodchuck (Marmota monax)?
a. marsupial mole (Notoryctes typhlops) b. yellow-footed marsupial mouse (Antechinus flavipes) c. wombat (Vombatus ursinus) d. honey glider (Petaurus breviceps) e. Tasmanian wolf (Thylacinus cynocephalus)
The type of receptor that consists only of a naked nerve fiber ending is called a
A. Pacinian corpuscle. B. Meissner's corpuscle. C. nociceptor. D. cochlear hair cell. E. cone.