Exam 30: Population Interactions and Community Ecology

Match each description to the appropriate term. -defined by the resources used by a species and the conditions it requires

Why are zebras striped?

Match each description to the appropriate term. -species closely resembling another species

Explain when and why resource partitioning occurs.

In the experiment involving bluegill sunfish and their choice of diet, what did the sunfish prefer when equal numbers of small, medium, and large Daphnia were present?

Which pair of organisms is a good example of commensalism?

Define the competitive exclusion principle.

Use the terms in the list to identify each lettered portion of the food web. -top carnivore

Mutualistic relationships between animal species are common.

Match each description to the appropriate term. -the sporting of a brightly contrasting, dangerous-looking pattern

Match each description to the appropriate term. -situation where both species benefit

Realized niches are larger than fundamental niches.

Endoparasites, such as tapeworms, live on their host.

Match each lettered cell in the table with the description that belongs in that cell. -one population benefits while the other is unaffected

In interference competition, two or more populations use the same limiting resource.

What conclusions can be drawn from Jane Lubchenco's study involving periwinkle snails and their algal food sources?

Suppose there are two forests. In the first forest, 39 of the 50 trees represent the dominant species. In the second forest, there are 2 of each of the 10 different species. What conclusion can be drawn regarding these two forests?

How is the grasshopper mouse able to consume the Eleodes longicollis beetle?

The intermediate disturbance hypothesis says that species richness is least in a community that has moderate disturbances.

Match each lettered cell in the table with the description that belongs in that cell. -one population obtains energy from animals; animals are killed