Bio 152 Exam 2 with accurate detailed
| | | | | | |
solutions
What does the biological species concept use as the primary criterion for
| | | | | | | | | | | |
determining species boundaries? | |
A. Geographic isolation
| |
B. Niche differences
| |
C. Gene flow
| |
D. Morphological similarity
| |
E. Molecular similarity - Correct answer ✔C
| | | | | |
When you use a field guide to identify a species by its appearance, you are
| | | | | | | | | | | | | | |
applying the: |
A. Evolutionary species concept
| | |
B. Biological species concept
| | |
C. Morphospecies concept
| |
D. Ecological species concept - Correct answer ✔C
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A drawback of the BSC is that it can't be applied to:
| | | | | | | | | | |
A. Polymorphic species
| | |
B. Asexual organisms
| | |
C. Extinct organisms
| |
,D. Plants - Correct answer ✔B&C
| | | | |
A bacteriologist is studying two asexually reproducing strains of Ecoli. The two
| | | | | | | | | | | |
require different amounts of trace minerals for survival; on these grounds, the
| | | | | | | | | | | |
bacteriologist determines that they are separate species. In making his
| | | | | | | | | |
determination, he is using what species concept? | | | | | |
A. Evolutionary species concept
| | |
B. Ecological species concept
| | | |
C. Biological species concept
| | |
D. Morphospecies concept - Correct answer ✔B
| | | | | |
Two species of frog mate in the same pond. One breeds in early summer and
| | | | | | | | | | | | | | |
one in late summer. This is an example of what kind of reproductive isolation?
| | | | | | | | | | | | |
A. Post zygotic, temporal separation
| | | |
B. Pre zygotic, temporal separation
| | | | |
C. Post zygotic, ecological separation
| | | |
D. Pre zygotic, behavioral isolation
| | | |
E. Pre zygotic, ecological separation - Correct answer ✔B
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It is thought that polar bears originated from a population of brown bears that
| | | | | | | | | | | | | |
became geographically isolated during a glaciation event that occurred about
| | | | | | | | | |
150,000 years ago. This is an example of:
| | | | | | |
A. Sympatric speciation
| |
B. Allopatric speciation
| | |
C. Peripatetic speciation
| |
,D. Adaptive radiation - Correct answer ✔B
| | | | | |
_ is a special case of speciation in which new species form rapidly in response to
| | | | | | | | | | | | | | |
numerous open ecological niches.
| | | |
A. Sympatric speciation
| |
B. Co speciation
| | |
C. Allopatric speciation
| | |
D. Post zygotic radiation
| | | |
E. Adaptive radiation - Correct answer ✔E
| | | | | |
_ is the process in which two groups of organisms speciate in response to each
| | | | | | | | | | | | | | |
other and at the same time. | | | | |
A. Sympatric speciation
| |
B. Co speciation
| | |
C. Allopatric speciation
| | |
D. Post zygotic isolation
| | |
E. Adaptive radiation - Correct answer ✔B
| | | | | |
You begin an experiment with 2 populations of Ecoli that are each composed of
| | | | | | | | | | | | | |
100 cells. The cells are all genetically identical. You grow these populations in
| | | | | | | | | | | | |
flasks on a lab bench under identical conditions with unlimited resources. Even
| | | | | | | | | | | |
after many generations natural selection can't occur because bacteria are
| | | | | | | | | |
haploid so there is no individual variation. | | | | | |
A. True |
B. False - Correct answer ✔B
| | | | |
, You are confronted with a box of preserved grasshoppers of various species that
| | | | | | | | | | | | |
are new to science and have not been described. Your assignment is to separate
| | | | | | | | | | | | | |
them into species. There is no accompanying information as to where or when
| | | | | | | | | | | | |
they were collected. Which species concept will you have to use?
| | | | | | | | | |
A. Biological
| |
B. Evolutionary
| |
C. Ecological
|
D. Morphological - Correct answer ✔D
| | | | |
_ is the process in which two groups of organisms living the same habitat
| | | | | | | | | | | | | |
diverge into separate species. | | |
A. Adaptive radiation
| |
B. Perpatric special
| | |
C. Co speciation
| | |
D. Sympatric speciation - Correct answer ✔D
| | | | | |
Two closely related populations of mice have been separated for many
| | | | | | | | | | |
generations by a river. Climatic change causes the river to dry up, thereby
| | | | | | | | | | | | |
bringing the mice populations back into contact in a zone of overlap. Which of
| | | | | | | | | | | | | |
the following is not a possible outcome when they meet?
| | | | | | | | |
A. Interbreed freely & produce fertile hybrid offspring
| | | | | | | |
B. No longer attempt to interbreed
| | | | |
C. Interbreed in the region of overlap, producing an inferior hybrid. Subsequent
| | | | | | | | | | | |
interbreeding between inferior hybrids produces progressively superior hybrids | | | | | | | |
over several generations | | |
| | | | | | |
solutions
What does the biological species concept use as the primary criterion for
| | | | | | | | | | | |
determining species boundaries? | |
A. Geographic isolation
| |
B. Niche differences
| |
C. Gene flow
| |
D. Morphological similarity
| |
E. Molecular similarity - Correct answer ✔C
| | | | | |
When you use a field guide to identify a species by its appearance, you are
| | | | | | | | | | | | | | |
applying the: |
A. Evolutionary species concept
| | |
B. Biological species concept
| | |
C. Morphospecies concept
| |
D. Ecological species concept - Correct answer ✔C
| | | | | | |
A drawback of the BSC is that it can't be applied to:
| | | | | | | | | | |
A. Polymorphic species
| | |
B. Asexual organisms
| | |
C. Extinct organisms
| |
,D. Plants - Correct answer ✔B&C
| | | | |
A bacteriologist is studying two asexually reproducing strains of Ecoli. The two
| | | | | | | | | | | |
require different amounts of trace minerals for survival; on these grounds, the
| | | | | | | | | | | |
bacteriologist determines that they are separate species. In making his
| | | | | | | | | |
determination, he is using what species concept? | | | | | |
A. Evolutionary species concept
| | |
B. Ecological species concept
| | | |
C. Biological species concept
| | |
D. Morphospecies concept - Correct answer ✔B
| | | | | |
Two species of frog mate in the same pond. One breeds in early summer and
| | | | | | | | | | | | | | |
one in late summer. This is an example of what kind of reproductive isolation?
| | | | | | | | | | | | |
A. Post zygotic, temporal separation
| | | |
B. Pre zygotic, temporal separation
| | | | |
C. Post zygotic, ecological separation
| | | |
D. Pre zygotic, behavioral isolation
| | | |
E. Pre zygotic, ecological separation - Correct answer ✔B
| | | | | | | |
It is thought that polar bears originated from a population of brown bears that
| | | | | | | | | | | | | |
became geographically isolated during a glaciation event that occurred about
| | | | | | | | | |
150,000 years ago. This is an example of:
| | | | | | |
A. Sympatric speciation
| |
B. Allopatric speciation
| | |
C. Peripatetic speciation
| |
,D. Adaptive radiation - Correct answer ✔B
| | | | | |
_ is a special case of speciation in which new species form rapidly in response to
| | | | | | | | | | | | | | |
numerous open ecological niches.
| | | |
A. Sympatric speciation
| |
B. Co speciation
| | |
C. Allopatric speciation
| | |
D. Post zygotic radiation
| | | |
E. Adaptive radiation - Correct answer ✔E
| | | | | |
_ is the process in which two groups of organisms speciate in response to each
| | | | | | | | | | | | | | |
other and at the same time. | | | | |
A. Sympatric speciation
| |
B. Co speciation
| | |
C. Allopatric speciation
| | |
D. Post zygotic isolation
| | |
E. Adaptive radiation - Correct answer ✔B
| | | | | |
You begin an experiment with 2 populations of Ecoli that are each composed of
| | | | | | | | | | | | | |
100 cells. The cells are all genetically identical. You grow these populations in
| | | | | | | | | | | | |
flasks on a lab bench under identical conditions with unlimited resources. Even
| | | | | | | | | | | |
after many generations natural selection can't occur because bacteria are
| | | | | | | | | |
haploid so there is no individual variation. | | | | | |
A. True |
B. False - Correct answer ✔B
| | | | |
, You are confronted with a box of preserved grasshoppers of various species that
| | | | | | | | | | | | |
are new to science and have not been described. Your assignment is to separate
| | | | | | | | | | | | | |
them into species. There is no accompanying information as to where or when
| | | | | | | | | | | | |
they were collected. Which species concept will you have to use?
| | | | | | | | | |
A. Biological
| |
B. Evolutionary
| |
C. Ecological
|
D. Morphological - Correct answer ✔D
| | | | |
_ is the process in which two groups of organisms living the same habitat
| | | | | | | | | | | | | |
diverge into separate species. | | |
A. Adaptive radiation
| |
B. Perpatric special
| | |
C. Co speciation
| | |
D. Sympatric speciation - Correct answer ✔D
| | | | | |
Two closely related populations of mice have been separated for many
| | | | | | | | | | |
generations by a river. Climatic change causes the river to dry up, thereby
| | | | | | | | | | | | |
bringing the mice populations back into contact in a zone of overlap. Which of
| | | | | | | | | | | | | |
the following is not a possible outcome when they meet?
| | | | | | | | |
A. Interbreed freely & produce fertile hybrid offspring
| | | | | | | |
B. No longer attempt to interbreed
| | | | |
C. Interbreed in the region of overlap, producing an inferior hybrid. Subsequent
| | | | | | | | | | | |
interbreeding between inferior hybrids produces progressively superior hybrids | | | | | | | |
over several generations | | |
