Answers24 - 25 CR - Biology B 0411KBBiogeographic Isolation-Standard Bio 4.5

Biogeographic Isolation-Standard Bio 4.5 Answers

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Which of the following could result in speciation from biogeographic isolation?

t
the isolation of two populations of the same species
t
the isolation of two individuals of the same species
t
the isolation of two populations of different species
t
the isolation of two individuals of different species
2
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most

T
The finches all ate the same materials as the mainland population.
T
The finches were all relatively small compared to the mainland population.
T
The finches all appeared to be related but differed from the mainland population.
T
The finches were identical to the mainland population.
3

most likely

T
The entire species will become extinct.
T
The population will become a separate species over time.
T
The population will breed with a different species nearby.
T
The entire species will continue to have viable offspring together.
4

Why do species evolve during adaptive radiation?

t
to fill different niches
t
to create variation
t
to become reproductively isolated
t
to provide evidence of evolution
5

Darwin hypothesized that new species could appear gradually through small changes in an ancestral species. What experiment did he conduct to test this hypothesis?

t
the breeding of finches
t
the breeding of pigeons
t
the observation of humans
t
the observation of dog breeds
6

A student argues that being separated geographically is the only way for speciation to occur. Why is he wrong?

S
Speciation does not usually rely on geographic isolation.
S
Speciation can occur from biological forces as well.
S
Speciation can occur from variation as well.
S
Speciation does not result from adaptive radiation.
7

Marsupials, such as kangaroos, koalas, and wombats, are mammals that care for their newborn young in a pouch. All marsupials that are found in Australia are thought to have evolved from a single species that migrated to the island and then adapted to the various niches. What does this example illustrate?

b
behavioral adaptation
a
adaptive radiation
g
geographic isolation
p
population explosion
9

best

t
the separation of members of a species through geographical or biological forces
t
the separation of members of different species through geographical forces
t
the separation of populations of different species through time
t
the separation of members of a species through anatomical forces
10

Two species of flies, Drosophila melanogaster and Drosophila simulans, can mate. They usually do not mate, however, even if they are kept together in a laboratory. Males court the females of both species, but the females prefer to mate with males of their own species. Which isolating mechanism does this describe?

b
behavioral
t
temporal
a
artificial
a
anatomical

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