Exam 16: Community Structure

Competition among plant species rarely involves only a single resource.

Discuss the physical structure of either a forest or a lake, and explain how the physical structure affects the biological structure.

In aquatic ecosystems, the thermocline occurs in the epilimnion.

Use examples to illustrate the difference between a dominant species and a keystone species.

Within a community, most species have a similar range of environmental tolerances.

________ index (D)represents the probability that two individuals randomly selected from a sample will belong to the same species.

Keystone predators have strong indirect effects on inferior competitors.

The group of species that occupy a given area, interacting either directly or indirectly, is called a(n)

When interspecific interactions involve more than just two species, they are said to be ________.

In aquatic habitats, the bottom zone where decomposition is most active is referred to as the ________ zone.

________ describes the number of trophic links in a food web.