Exam 56: Community Ecology

The way in which an organism utilizes its environment may be called

Insects that lay eggs on living hosts are called

Paleontological studies indicate that, over millions of years,

Competition shapes communities because there are usually limited

In India, golden jackals that have been expelled from their pack have been known to attach themselves to a particular tiger, trailing it at a safe distance in order to feed on the big cat's kills.What type of relationship exists between the jackal and the tiger?

Interspecific competition can affect the phenotypic characteristics of organisms.

Succession happens because species in the habitat alter that habitat in ways that assist other species.There are three dynamic concepts that are of critical importance for succession to take place.They are

Geographical allopatry between species is definitive evidence of interspecific competition.

Chemicals that play the dominant role in protecting plants from being eaten by herbivores or predators are called

A relationship in which both members benefit is called

In general, communities in early succession will be dominated by fast-growing species with r-selected life histories.

The attempt of two organisms trying to utilize the same resource is called

Which statement is an accurate interpretation of the outcome in an ecosystem when a major predator is removed?

Communities with a high level of bacterial diversity are found in many habitats including soil and aquatic environments.Recent studies indicate this diversity is crucial to the functioning of these communities.The same studies have also found that phage abundance plays a critical role in the maintenance of the bacterial diversity within these communities.Are phages a density-dependent or a density-independent regulating factor?

Based on the following graph, what is the most likely relationship between Paramecium and Didinium?

Resource partitioning can often be seen in similar species that occupy the same geographic area.These species avoid competition by living in different portions of the habitat or by utilizing different food or other resources and are called ____________ species.

In ________ mimicry, two or more unrelated but protected species resemble one another, thus achieving a kind of group defense.

A _________ relationship is one in which two or more kinds of organisms live together in often elaborate and more or less permanent association.

Garlic mustard is an invasive plant species in North American temperate forests.Garlic mustard secretes an allelochemical that interferes with relationships between native tree roots and their mycorrhizal fungi.This would be an example of

Two species of warblers colonize the same island habitat.Both species nest in similar locations and eat the same type of prey.Eventually, competition will probably cause one species to