According to the intermediate disturbance
hypothesis,
a. species richness becomes greatest in
between disturbances of moderate intensity
or frequency.
b. a disturbance is necessary during
succession in order to stabilize the
community.
c. community succession is highly
predictable.
d. competition and other species interactions
are the most important factors in shaping
community structure.
e. a community reverts to a climax state after
a disturbance.
A
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The bacterial viruses that are released by a process termed extrusion are called
A. lysogenic viruses. B. temperate phages. C. filamentous phages. D. lambda viruses.
If a human red blood cell takes the shortest possible route from the right ventricle to the right atrium, then it must travel through this number of capillary beds.
A. one B. two C. three D. four E. five
When a species dies, the species is said to be:
a. extinct. b. extant. c. endangered. d. threatened. e. endemic
Which of the following statements about taxonomy is NOT true?
A. Homologous structures are derived from a single structure in the ancestor, although they may be adapted to different uses in the descendent species. B. Analogous structures are derived from a common ancestral structure to perform the same function. C. In cladistics, a common ancestor and all its descendents that share one or more derived traits are placed in a single clade. D. Biochemical data and the fossil record can be used to indicate the length of time since two species diverged from a common ancestor.