Exam 54: Community Ecology

Competition between species 1 and species 2 is beneficial for species 1 and harmful for species 2.

The association of nitrogen fixing bacteria of the genus Rhizobium with legumes such as peas is an example of mutualism.

The associated figure provides support for which of the following processes?

Animals with chemical defenses are also typically:

The realized niche for the green anole was determined by:

Species richness is a measure of both the number of species and the relative importance of each species based on its abundance, productivity, or size.

Many poisonous snakes share warning colors of red, yellow, and black. This is an example of:

Nicotine synthesis is a(n) adaptation of plant chemical defense against insects.

During ____ between predator and prey species, the predatory species becomes more efficient at catching prey, while the prey species becomes better at escaping predators.

Which scenario best describes facilitation?

Figure 54-2 Use the accompanying figure to summarize the key concepts relating to species richness from studies of birds in the South Pacific islands. Each dot in the figure represents an island.

Explain Gleason's individualistic model describing community structure.

Cryptic coloration advertises a species unpalatability to potential predators.

In one sentence, summarize the intermediate disturbance hypothesis.

Large-scale experiments conducted in oak forests of the northeastern United States linked bumper acorn crops to booming mouse populations. The conclusion from these experiments is that:

In an ecosystem's bottom-up processes, predators affect the abundances of other populations in the ecological community. ____________________

A(n) ____ has both biotic and abiotic components.

Which are the three main roles played by organisms in community life?

In a parasitic relationship where the host contracts a disease and sometimes dies, the parasite is called a(n):