BIOL 301 - Ecology and Evolution Exam Questions and Verified Answers/Accurate Solutions|
New Update Already Graded A+
In the Lotka-Volterra population model which persists over time, which of the following
describes the change in prey population? Both increasing and decreasing
There are communities of mammalian species which inhabit a tropical rainforest. Which kind of
pattern would you expect to see in one of these communities? Most species are rare,
whereas the few other species are represented by relatively many individuals
Above is a [graph] of the predator-prey model which shows that their population sizes change
in a predictable way. What would you expect to theoretically happen to the above cycle
labelled B after time has passed? The predators disappear
In the oceans there are coral reef systems which are complex and productive ecological
systems. Let us assume these systems have species with very large population sizes. If the
organisms at all levels developed adaptions to increase ecological efficiency between trophic
levels, which of the following would likely result over evolutionary time scales? The trophic
pyramid would contract and additional trophic levels would be expected to emerge
Species richness over time for a given geographical region could be modeled as the birth and
death of species. Given this geographical region and no migration, if the birth rate is one new
species per million years and the death rate is 1.5 species per million years, what would be the
outcome for species richness in this region? The species richness would eventually reach 0
Ecosystems can be understood by viewing them abstractedly as the energy flow among trophic
levels. A portion of the energy assimilated by a lower trophic level is then available to a higher
trophic level. If we were to observe a salt marsh ecosystem with a lower trophic level
containing only "marsh grass," then the energy in this lower level that is available to primary
consumers is called: Net primary production
In an idealized ecological system with three closed communities, one expects to observe which
of the following? Ecotones
New Update Already Graded A+
In the Lotka-Volterra population model which persists over time, which of the following
describes the change in prey population? Both increasing and decreasing
There are communities of mammalian species which inhabit a tropical rainforest. Which kind of
pattern would you expect to see in one of these communities? Most species are rare,
whereas the few other species are represented by relatively many individuals
Above is a [graph] of the predator-prey model which shows that their population sizes change
in a predictable way. What would you expect to theoretically happen to the above cycle
labelled B after time has passed? The predators disappear
In the oceans there are coral reef systems which are complex and productive ecological
systems. Let us assume these systems have species with very large population sizes. If the
organisms at all levels developed adaptions to increase ecological efficiency between trophic
levels, which of the following would likely result over evolutionary time scales? The trophic
pyramid would contract and additional trophic levels would be expected to emerge
Species richness over time for a given geographical region could be modeled as the birth and
death of species. Given this geographical region and no migration, if the birth rate is one new
species per million years and the death rate is 1.5 species per million years, what would be the
outcome for species richness in this region? The species richness would eventually reach 0
Ecosystems can be understood by viewing them abstractedly as the energy flow among trophic
levels. A portion of the energy assimilated by a lower trophic level is then available to a higher
trophic level. If we were to observe a salt marsh ecosystem with a lower trophic level
containing only "marsh grass," then the energy in this lower level that is available to primary
consumers is called: Net primary production
In an idealized ecological system with three closed communities, one expects to observe which
of the following? Ecotones
