APES Unit 2 Exam |69 Questions and Answers |
100% Correct
ecosystem diversity - -Which refers to the variety of ecosystems within a region?
-artificial selection - -Which process of evolution is not random?
-slow environmental change and high genetic variation - -Which pair would most increase
the rate of evolution within a species?
-recombination - -What is the process by which part of one chromosome breaks off and
attaches to another chromosome?
-genetic diversity - -The variety of genes within a species is called its
-allopatric speciation - -A population of rabbits lives in a meadow with a depression that
runs through the middle. The depression fills in with water and becomes a river that
separates the population into two groups. Over a very long period the two populations
develop into entirely different species, no longer capable of reproducing with each other.
This is an example of
-natural selection - -Which is NOT considered to be a factor in the current increase in
extinction rates?
-niche - -Earthworms live in many grass and forest ecosystems, and aerate soil as they
burrow. They ingest organic matter and travel between soil horizons. These traits, taken
collectively, refer to the __________ of the earthworm.
-a collision would produce a dust cloud that blocks sunlight, reducing photosynthesis. - -
How might a meteorite landing on Earth lead to a worldwide, mass extinction?
-artificial selection - -Which process can be controlled most directly by humans?
-artificial selection, natural selection, and genetic drift - -Evolution occurs through:
-99% - -Approximately what percent of species that have ever lived on Earth are thought
to be extinct?
-bottleneck effect and genetic drift - -Which decreases genetic variation?
-genetic drift - -If a small population loses genotypes by chance over time, it has
experienced
, -it may be affected by the environment - -Which of the following is true about an
individual's phenotype?
-Shannon's Index - -Which measure of biodiversity takes into account the number of
species present and the relative abundance of the species present?
-physically distinct from other groups of organisms and can interbreed with others from
the same group - -What factors are used to determine what constitutes a species?
-differences in traits are not associated with differences in survival and reproduction. - -
Which of the following is NOT a key component of the theory of evolution by natural
selection?
-evolution - -The change in genetic composition of a population over time is called
-the genetic change within a population over time - -Which is the best description of
evolution?
-the two population would not be able to interbreed - -If allopatric speciation occurs after
a population has split into two distinct populations, what would happen if the two species
were reunited after many generations?
-an individual's ability to survive and reproduce. - -In evolutionary biology, the term
fitness refers to
-phenotype - -The physical expression of an organism's genes is called its
-all mutations are harmful - -Which statement about mutations is NOT correct?
-an adaption - -_________ is a trait that improves an individual's fitness.
-larger range of tolerance in regard to temperature. - -A river contains two species of trout
—brown trout and rainbow trout. Brown trout survive in temperatures between 40 and 73
degrees Fahrenheit. Rainbow trout survive in temperatures between 60 and 78 degrees
Fahrenheit. The population of rainbow trout is much larger than the population of brown
trout. A cold spell causes the river water temperature to fall to 58 degrees. The rainbow
trout begin to die and the brown trout populations are unaffected. This is because brown
trout have
-troposphere - -In which level of the atmosphere does weather occur?
-troposphere - -Which level of the atmosphere is the densest?
-low precipitation rates and cold temperatures slow decomposition. - -Boreal forests tend
to have a thick layer of organic material but the soil is poor in nutrients. What is the best
explanation for this?
100% Correct
ecosystem diversity - -Which refers to the variety of ecosystems within a region?
-artificial selection - -Which process of evolution is not random?
-slow environmental change and high genetic variation - -Which pair would most increase
the rate of evolution within a species?
-recombination - -What is the process by which part of one chromosome breaks off and
attaches to another chromosome?
-genetic diversity - -The variety of genes within a species is called its
-allopatric speciation - -A population of rabbits lives in a meadow with a depression that
runs through the middle. The depression fills in with water and becomes a river that
separates the population into two groups. Over a very long period the two populations
develop into entirely different species, no longer capable of reproducing with each other.
This is an example of
-natural selection - -Which is NOT considered to be a factor in the current increase in
extinction rates?
-niche - -Earthworms live in many grass and forest ecosystems, and aerate soil as they
burrow. They ingest organic matter and travel between soil horizons. These traits, taken
collectively, refer to the __________ of the earthworm.
-a collision would produce a dust cloud that blocks sunlight, reducing photosynthesis. - -
How might a meteorite landing on Earth lead to a worldwide, mass extinction?
-artificial selection - -Which process can be controlled most directly by humans?
-artificial selection, natural selection, and genetic drift - -Evolution occurs through:
-99% - -Approximately what percent of species that have ever lived on Earth are thought
to be extinct?
-bottleneck effect and genetic drift - -Which decreases genetic variation?
-genetic drift - -If a small population loses genotypes by chance over time, it has
experienced
, -it may be affected by the environment - -Which of the following is true about an
individual's phenotype?
-Shannon's Index - -Which measure of biodiversity takes into account the number of
species present and the relative abundance of the species present?
-physically distinct from other groups of organisms and can interbreed with others from
the same group - -What factors are used to determine what constitutes a species?
-differences in traits are not associated with differences in survival and reproduction. - -
Which of the following is NOT a key component of the theory of evolution by natural
selection?
-evolution - -The change in genetic composition of a population over time is called
-the genetic change within a population over time - -Which is the best description of
evolution?
-the two population would not be able to interbreed - -If allopatric speciation occurs after
a population has split into two distinct populations, what would happen if the two species
were reunited after many generations?
-an individual's ability to survive and reproduce. - -In evolutionary biology, the term
fitness refers to
-phenotype - -The physical expression of an organism's genes is called its
-all mutations are harmful - -Which statement about mutations is NOT correct?
-an adaption - -_________ is a trait that improves an individual's fitness.
-larger range of tolerance in regard to temperature. - -A river contains two species of trout
—brown trout and rainbow trout. Brown trout survive in temperatures between 40 and 73
degrees Fahrenheit. Rainbow trout survive in temperatures between 60 and 78 degrees
Fahrenheit. The population of rainbow trout is much larger than the population of brown
trout. A cold spell causes the river water temperature to fall to 58 degrees. The rainbow
trout begin to die and the brown trout populations are unaffected. This is because brown
trout have
-troposphere - -In which level of the atmosphere does weather occur?
-troposphere - -Which level of the atmosphere is the densest?
-low precipitation rates and cold temperatures slow decomposition. - -Boreal forests tend
to have a thick layer of organic material but the soil is poor in nutrients. What is the best
explanation for this?
