Biological magnification is best defined as ____
a. the increase in toxicity of a chemical compound resulting from its metabolism by a living
organism
b. the higher relative proportion of biomass among producers as compared to consumers in
an ecosystem
c. the concentration of nondegradable poisons within organisms at higher trophic levels
d. the concentration of degradable poisons within organisms at lower trophic levels
e. the declining relative proportion of nondegradable poisons in organisms at higher trophic
levels as compared to those at lower trophic levels
C
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Which one of the following fungal groups has an alternation of multicellular gametophyte and sporophyte generations?
A. Zygomycetes B. Ascomycetes C. Blastocladiomycota D. Chytridiomycetes E. Glomeromycetes
DNA fingerprinting is limited to human studies
Indicate whether the statement is true or false.
The Chi-square test involves a statistical comparison between measured (observed) and predicted (expected) values. One generally determines degrees of freedom as ________
A) the number of categories being compared B) ten minus the sum of the two categories C) one more than the number of classes being compared D) one less than the number of classes being compared E) the sum of the two categories
Some molecular data place the giant panda in the bear family (Ursidae) but place the lesser panda in the raccoon family (Procyonidae)
If the molecular data best reflect the evolutionary history of these two groups, then the morphological similarities of these two species is most likely due to _____. A) the inheritance of acquired characteristics B) sexual selection C) possession of analogous (convergent) traits D) possession of shared primitive characters