Four of the five choices listed below are examples of
directional selection. Select the exception.
a. pesticide resistance
b. sexual dimorphism
c. wing color in peppered moths
d. coat color in rock pocket mice
e. antibiotic resistance
Answer: b
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Which of the following would have the most difficulty entering a water lattice?
a. table salt (NaCl) b. a nonpolar molecule c. a sodium ion d. a proton (H+) e. an electron
What phylum of algae is almost exclusively composed of marine inhabitants?
a. Chlorophyta b. Phaeophyta c. Rhodophyta d. Anthophyta
Homeostasis provides what kind of internal environment?
A. Positive B. Stable C. Limiting D. Changing E. Chemical and physical
Which group of mammals exhibits the widest distribution and greatest diversity?
A. Marsupials B. Cetaceans C. Placentals D. Primates E. Monotremes