GRCC BI 118 Environmental Science Exam #2 UPDATED ACTUAL Questions And
Correct Answers
C
Terms in this set (55)
Why do species live where they do? Because they have adapted to where they live!
what are the differences between adaptation and Acclimation is a change in physiology of an individual based on adaptation.
acclimation? Adaptation is driven by natural selection, are inheritable traits, and populations
adapt over time.
Adaptation is not acclimation But acclimation is adaptation
how are adaptations accumulated by species? Through Natural selection
what process?
What is the difference between natural selection and Natural Selection allow populations to change genetically along with changing
artificial selection? environments.
Artificial selection is a process by which humans select one or more desirable
genetic traits in the population of a plant or animal species and then use selective
breeding to produce populations containing many individuals with the desired
traits.
Man alter the climate very quickly. How can this cause the They select genetic traits that are not best suited for specific environments.
extinction of a species?
What does selective pressure mean? and what are some Selective pressure: populations adapt in response to changes in their
examples of selective pressures? environments. Some examples are insecticides, antibiotics, competition,
predators, etc.
What two factors must be present in a population for 1. Requires genetic variation
natural selection to occur? 2. Requires selective advantages among that variation
, What two factors shape biomes? Temperature and precipitation
These determine plants which then determine animals.
These factors determine the soil type which determines the plants that can live in
the area which can determine the animals that can live in the area!!
What biome is being impacted the most by climate Tundra
change? Why are the people there mad about it?
what are tolerance curves? Understand how they work They are diagrams of where a species can or can't survive and reproduce. They
and what the major limitation of these is! are based on a single limiting factor, that is usually an abiotic factor
What are the three zones in a tolerance curve? Optimal Zone
Stress Zone
Intolerant Zone
What are the example we talked about in class? In class we talked about the tolerance of trout based on the abiotic factor of
temperature.
What would the abiotic limiting factor be for humans? Temperature
pH
precipitation
How is the ecological niche model better than tolerance It looks at the sum of all adaptations of a species, rather than just a single factor.
curves?
What is a species ecological niche? Total way of life, or role of a species in an ecosystem. It includes all physical,
chemical, and biological conditions that a species needs ignorer to live and
reproduce in an ecosystem.
What is the competitive exclusion principle? Recall the Coexistence among species in nature is very common. . No two species can
example of starting a business! occupy the same niche due to competition.
Could two species exist in the same niche? If two species are competing there are two possible outcomes.
1. Extinction of one species, which is very rare.
2. A niche shift by natural selection of either species or both resulting in
coexistence.
What are the two possible outcomes of competition A niche shift by natural selection of either species or both resulting in coexistence
between species A and species B? Which of these is most
common in nature?
In nature, is there more co-existence or competition coexistence!
among species?
Exotic species!! Mostly introduced by humans
This doesn't occur often in nature because species are adapted to their own niche
Correct Answers
C
Terms in this set (55)
Why do species live where they do? Because they have adapted to where they live!
what are the differences between adaptation and Acclimation is a change in physiology of an individual based on adaptation.
acclimation? Adaptation is driven by natural selection, are inheritable traits, and populations
adapt over time.
Adaptation is not acclimation But acclimation is adaptation
how are adaptations accumulated by species? Through Natural selection
what process?
What is the difference between natural selection and Natural Selection allow populations to change genetically along with changing
artificial selection? environments.
Artificial selection is a process by which humans select one or more desirable
genetic traits in the population of a plant or animal species and then use selective
breeding to produce populations containing many individuals with the desired
traits.
Man alter the climate very quickly. How can this cause the They select genetic traits that are not best suited for specific environments.
extinction of a species?
What does selective pressure mean? and what are some Selective pressure: populations adapt in response to changes in their
examples of selective pressures? environments. Some examples are insecticides, antibiotics, competition,
predators, etc.
What two factors must be present in a population for 1. Requires genetic variation
natural selection to occur? 2. Requires selective advantages among that variation
, What two factors shape biomes? Temperature and precipitation
These determine plants which then determine animals.
These factors determine the soil type which determines the plants that can live in
the area which can determine the animals that can live in the area!!
What biome is being impacted the most by climate Tundra
change? Why are the people there mad about it?
what are tolerance curves? Understand how they work They are diagrams of where a species can or can't survive and reproduce. They
and what the major limitation of these is! are based on a single limiting factor, that is usually an abiotic factor
What are the three zones in a tolerance curve? Optimal Zone
Stress Zone
Intolerant Zone
What are the example we talked about in class? In class we talked about the tolerance of trout based on the abiotic factor of
temperature.
What would the abiotic limiting factor be for humans? Temperature
pH
precipitation
How is the ecological niche model better than tolerance It looks at the sum of all adaptations of a species, rather than just a single factor.
curves?
What is a species ecological niche? Total way of life, or role of a species in an ecosystem. It includes all physical,
chemical, and biological conditions that a species needs ignorer to live and
reproduce in an ecosystem.
What is the competitive exclusion principle? Recall the Coexistence among species in nature is very common. . No two species can
example of starting a business! occupy the same niche due to competition.
Could two species exist in the same niche? If two species are competing there are two possible outcomes.
1. Extinction of one species, which is very rare.
2. A niche shift by natural selection of either species or both resulting in
coexistence.
What are the two possible outcomes of competition A niche shift by natural selection of either species or both resulting in coexistence
between species A and species B? Which of these is most
common in nature?
In nature, is there more co-existence or competition coexistence!
among species?
Exotic species!! Mostly introduced by humans
This doesn't occur often in nature because species are adapted to their own niche
