Net productivity can be measured as
A. numbers of herbivores.
B. biomass of detritivores.
C. energy stored in biomass.
D. sunlight striking an area of the planet.
E. None of these choices are correct.
C. energy stored in biomass.
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Fruit flies all look more or less alike. If you have a male and female fruit fly, how could you test the hypothesis that they're the same species?
A) Determine the sequence of several of their genes. B) Examine them closely under a microscope, and compare what you see to a published description of fruit flies. C) See if they'll mate when they're put together. D) See if they mate and if their offspring can also mate.
In the plant kingdom, all of the species are descended from a single common ancestor. In terms of phylogeny, what type of tree of life is this?
a) uniphyletic b) allopatric c) sympatric d) monophyletic e) punctuated
Two populations of plants found in the same meadow look identical but are fertilized by different pollinators-one by a night-flying hummingbird moth, the other by honeybees that fly by day. This is an example of
A) geographic isolation. B) temporal isolation. C) ecological isolation. D) behavioral isolation. E) mechanical incompatibility.
Humans routinely take natural areas and change the environment to suit their needs (such as clear-cutting forests or building dams). This is an example of _______.
a) overharvesting b) climate change c) exotic species d) habitat loss