Ch. 23 Quiz

What term describes the relationship between the lynx and the snowshoe hare?

Population cycle

"Secondary succession" differs from primary succession in what way(s)?

Primary succession produces a natural community while secondary succession occurs in the presence of invasive organisms that eventually become permanent community members.

Which picture has the greater biodiversity?

b

In a mutualistic relationship

both species involved in the relationship benefit.

Which picture best represents a community?

c

Which type of symbiotic relationship is designated +/0?

commensalism

Overgrazing, overlogging, overburning, and overfarming are all examples of an adverse human impact on

communities.

Community interactions are commonly classified on the basis of the benefits that each interacting species experiences; when neither species benefits, the interaction is classified as

competition.

If a new predator is introduced to an area with a type of prey that is limited in number, the prey species is likely to

decrease and possibly become extinct.

Human activities like overlogging and overfarming may cause ___ to occur.

desertification

A community involves _____.

different types of organisms living together

Mutualistic relationships

evolve when the benefits of the interaction outweigh the costs.

Species compete indirectly for shared resources in ________ competition.

exploitative

Two organisms share the same habitat and consume from the same food source. Neither prevents the other from obtaining the food source, but the action of each species reduces the total availability of food. This is an example of ________ competition.

exploitative

Which of the following pairs represent a symbiotic relationship?

gut inhabitant mutualism and parasitism

Pollinator mutualisms are special interactions typically involving ________, which receive food or a place to lay eggs, and ________, which receive pollen from others of their kind.

insects; plants

Nonnative species are also called ____ species. Generally, they survive ____

invasive; and growth is exponential

Although the wolf population was never very large, Yellowstone National Park experienced profound changes after wolves were removed. Elk consumed young willow trees that constituted the food supply for beavers, resulting in fewer beaver dams, a lower streamside water table, and the reduction of more than 30 species of songbirds and insects. This sequence of events suggests that the wolf

is a keystone species.

An animal that is not poisonous looks very similar to an animal that is poisonous. This is an example of _____.

mimicry

The goby acts as a "seeing eye" fish for the shrimp, which has poor vision. In return, the shrimp shares its burrow with the goby, thereby providing the fish with a safe haven in an environment with few options for sheltering from predators. This situation is an example of _____.

mutualism

Which relationship is designated +/+?

mutualism

In lichens, fungi and cyanobacteria live together without causing significant harm to one another. Attempts to grow either the cyanobacteria or the fungi independently result in the death of the organism. This interaction is an example of

mutualism.

Several species of eastern warbler feed primarily in conifers. Although each species could forage through the entire tree, the Cape May warbler, the bay-breasted warbler, and the yellow-rumped warbler feed on the upper, middle, and lower branches, respectively. These feeding behavior patterns illustrate

niche partitioning.

Warning coloration represents a situation where

prey species with potent defenses become highly visible and easily recognized by predators.

In 1963, Surtsey, a volcanic island, emerged off the coast of Iceland. Initially devoid of any living organisms, the island, with time, acquired a simple community of plants, lichens, soil insects, and microorganisms. The acquisition of this community is an example of

primary succession.

Which type of succession is likely to occur after a forest fire?

secondary succession

n a grove of trees, there are sugar maples, red oak, redbud, and dogwood trees. This information gives us the ____.

species richness

Population growth of the lynx is highly dependent on population growth of the rabbit.

true

Keystone species are

typically not realized until they are missing or disappear.