Exam 54: Community Ecology

The next series of questions presumes that you have at least once visited and have some knowledge of the fast-food restaurant McDonald's. Use your knowledge of McDonald's and your understanding of community ecology to answer the following questions about an ecological community, McDonaldland. -In McDonaldland, which of the following would be an example of an introduced species?

Why are food chains relatively short?

Which of the following is an example of Batesian mimicry?

The principle of competitive exclusion states that

What percent of all species on Earth are parasites?

Prairie dogs once covered the expanses of the Great Plains. Their grazing made the grass more nutritious for the huge herds of bison, and they were preyed upon by a variety of snakes, raptors, and mammals. In fact, the black-footed ferret (now endangered)specialized in prairie dog predation. Today, increases in housing and agricultural developments have eradicated many prairie dog towns. Which of the following statements about prairie dogs is true?

Why do tropical communities tend to have greater species diversity than temperate or polar communities?

Why is a pathogen generally more virulent in a new habitat?

According to the nonequilibrium model,

Use the following diagram of five islands formed at around the same time near a particular mainland, as well as MacArthur and Wilson's island biogeography principles, to answer the following questions. Figure 54.4 -Which island would likely have the greatest species diversity?

Which of the following is an example of cryptic coloration?

Biomanipulation can best be described as

Food chains are sometimes short because

Use the following diagram of five islands formed at around the same time near a particular mainland, as well as MacArthur and Wilson's island biogeography principles, to answer the following questions. Figure 54.4 -Which island would likely have the lowest extinction rate?

Which of the following is an example of aposematic coloration?

In a tide pool, 15 species of invertebrates were reduced to eight after one species was removed. The species removed was likely a(n)

The energetic hypothesis and dynamic stability hypothesis are ideas that attempt to explain