A populations of scale insects exhibited superior survival when transplanted within, rather than between, ponderosa pine trees. Variation in antiherbivore defenses among individual ponderosa pines thus appears to be paralleled by variation in genotypes of the scale insects that infest them. If this is the case, then the experiment demonstrates __________.

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#Question id: 12111

#Section 1: Ecology

Which of the following is a tertiary consumer?

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#Question id: 10735

#Section 1: Ecology

Which of the following extreme viewpoints of community organization holds that a community comprises a superorganism and is much more than the sum of its individual parts?

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#Question id: 3290

#Section 2: Evolution

Dog breeders maintain the purity of breeds by keeping dogs of different breeds apart when they are fertile. This kind of isolation is most similar to which of the following reproductive isolating mechanisms?

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#Question id: 12342

#Section 1: Ecology

Which of the following is a biological attribute that would most likely allow a species to become cosmopolitan in distribution?

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#Question id: 4610

#Section 2: Evolution

It has been observed that organisms on islands are different from, but closely related to, similar forms found on the nearest continent. This is taken as evidence that ________.