During the process of community succession,
according to the traditional view,
a. the total biomass remains constant.
b. succession culminates in a climax community
c. the pioneer community gives way quickly to the
climax community, followed by a succession of
more diverse arrays of organisms.
d. nutrients cycle more rapidly with time.
e. all of these occur.
Answer: b
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Indicate whether the statement is true or false.
In parthenogenesis (select all correct choices):
A. unfertilized eggs develop into adults. B. adults may be haploid or diploid. C. adults may develop via mitosis or meiosis. D. the parent may be either maternal or paternal. E. eggs may be fertilized or unfertilized.
The variation seen among individuals when each individual shows one of two—or very few—easily distinguishable traits is known as _____ variation.
a. continuous b. discontinuous c. dominant d. recessive
A bacterium that you isolated from pond water appears to use light for energy. Based upon this information, you inoculate the organism into fresh media, infused with lots of carbon dioxide. Even after incubation at the correct temperature (of pond water), the organism is not growing. Your best explanation of what might have happened is
A. there was no sulfur compound added to the medium, that could be used as an electron donor. B. there is some inhibitory chemical that is preventing the growth of the bacterium. C. you were using the wrong type of sunlight as the energy source for the bacterium. D. no oxygen was added to the medium so the organism died.