Which of the following represents a form of intrasexual selection?
a. mate guarding by grasshopper males
b. the increase of sperm density in bluegill sneaker morphs
c. moth females using stored sperm in positive correlation to the amount of nuptial gift received
d. "short-horned" (= female looking) forked fungus beetle males mating with females without engaging in fights with "long-horned" dominant males
e. A, B, and D
E
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Although bees carry pollen from tulip flowers to the blossoms on cherry trees, hybrid seeds are not produced because of
A) gametic isolation. B) temporal isolation. C) ecological isolation. D) mechanical isolation. E) All of these
At the pH of most bodily fluids, which functional group will lose a proton and which functional group will accept a proton?
A. sulfhydryl; carbonyl B. amino; carboxyl C. carbonyl; Hydroxyl D. carboxyl; amino E. Hydroxyl; amino
The energy for active transport of substances into and out of plant cells is provided by _________.
A. Phloem B. ADP C. ATP D. Voltage E. Water
Ever since Darwin, systematics has tried to
A) organize species into groups based on logical categories. B) classify species in groups that reflect evolutionary relationships. C) prove the existence of evolution using laboratory experiments. D) keep classification and naming as a practical science, separate from controversies involving evolution.