apes chapter 4

which of the following is an area where primary succession is likely to occur?

a sand dune along a lakeshore

an organism is classified as a specialist or generalist based on its

all of the above

five islands, A, B, C, D, and E, differ only in distance from the mainland, area, and species diversity. Which island would be predicted to have the highest species diversity?

b - 50 km from the mainland - size 1,000,000 hectares

specialist species are more likely to

become extinct

which of the following ecological relationship between species is exemplified by moss growing on a tree trunk in a forest?

commensalism

which of the following relationship is best exemplified by starlings displacing bluebirds from nesting sites?

competition

the graph represents two species starting off at the same level and then one increasing and the other decreasing, what does this represent?

competitive exclusion

however, there are few cats that exhibit an intermediate length of fur. You conclude that this population is undergoing

disruptive natural selection

an organism's role, or lifestyle, within the structure of an ecosystem is its:

ecological niche

how come elephants have not overrun the planet?

elephants produce more offspring than will to survive maturity

based on the theory of island biogeography, you would predict that large islands near the mainland would have relatively

high immigration and low extinction rates

species whose roles in an ecosystem are much more important than their abundance would suggest are called

keystone species

species that migrate or are accidentally introduced into an ecosystem are called

nonnative species

parasites

rarely kill their host

which of the following best explains why the different warbler species can all have habitats in the same conifer trees?

resource partitioning of the seeds reduces competition, and the five different species can live in the same tree.

which of the following would exhibit primary succession?

rock exposed by a retreating glacier

over the course of time and many generations, you notice that the proportion of individuals with pink eyes steadily increases. You conclude that this population is undergoing

stabilizing natural selection

over the course of time, you notice that the frequency of moderate-length wings increases. You conclude that the most likely cause of this development is

stabilizing natural selection

evidence for the evolution of life comes from all of the following except:

the Bible

which of the following statements best explains why only a limited number of offspring can survive in a fish population?

the chance of survival decreases when there is intraspecific competition for resources among surviving yearlings.

competition occurs when:

two or more species attempt to use an essential common resource

an organism's niche is analogous to its

way of life

the graph below shows the population size of the wolf and elk populations over time.

wolves leaving the park may prey on livestock in grazing land outside the park.