K-Selected and r-Selected Species - AP Environmental Science
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What is the reproductive strategy of equilibrium species?
What is the reproductive strategy of equilibrium species?
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K-selected strategy. Equilibrium species maintain stable populations near carrying capacity.
K-selected strategy. Equilibrium species maintain stable populations near carrying capacity.
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What is a defining trait of r-selected species?
What is a defining trait of r-selected species?
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High reproductive rates and short gestation. r-selected species prioritize rapid reproduction for population growth.
High reproductive rates and short gestation. r-selected species prioritize rapid reproduction for population growth.
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What is a common reproductive strategy for K-selected species?
What is a common reproductive strategy for K-selected species?
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Producing few, well-cared-for offspring. Quality strategy invests heavily in each offspring's survival.
Producing few, well-cared-for offspring. Quality strategy invests heavily in each offspring's survival.
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What is a life history trait of K-selected species?
What is a life history trait of K-selected species?
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Long lifespan. Extended lifespan allows for repeated reproductive opportunities.
Long lifespan. Extended lifespan allows for repeated reproductive opportunities.
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What is the reproductive strategy of equilibrium species?
What is the reproductive strategy of equilibrium species?
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K-selected strategy. Equilibrium species maintain stable populations near carrying capacity.
K-selected strategy. Equilibrium species maintain stable populations near carrying capacity.
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Which species type often experiences boom-and-bust population cycles?
Which species type often experiences boom-and-bust population cycles?
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r-selected species. High reproductive rates cause rapid population increases and crashes.
r-selected species. High reproductive rates cause rapid population increases and crashes.
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What is a common reproductive strategy for K-selected species?
What is a common reproductive strategy for K-selected species?
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Producing few, well-cared-for offspring. Quality strategy invests heavily in each offspring's survival.
Producing few, well-cared-for offspring. Quality strategy invests heavily in each offspring's survival.
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What is a defining trait of r-selected species?
What is a defining trait of r-selected species?
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High reproductive rates and short gestation. r-selected species prioritize rapid reproduction for population growth.
High reproductive rates and short gestation. r-selected species prioritize rapid reproduction for population growth.
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Which species type typically has a longer lifespan?
Which species type typically has a longer lifespan?
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K-selected species. Lower mortality rates and investment in survival extend lifespan.
K-selected species. Lower mortality rates and investment in survival extend lifespan.
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What is the reproductive strategy of opportunistic species?
What is the reproductive strategy of opportunistic species?
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r-selected strategy. Opportunistic species exploit temporary resource availability rapidly.
r-selected strategy. Opportunistic species exploit temporary resource availability rapidly.
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Which type of species has a higher chance of offspring survival?
Which type of species has a higher chance of offspring survival?
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K-selected species. Intensive parental care increases individual offspring survival rates.
K-selected species. Intensive parental care increases individual offspring survival rates.
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What is an example of an r-selected species?
What is an example of an r-selected species?
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Mice. Small mammals with rapid reproduction and short generation times.
Mice. Small mammals with rapid reproduction and short generation times.
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Which type of species is more likely to have parental care?
Which type of species is more likely to have parental care?
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K-selected species. Investment in fewer offspring allows for extensive parental care.
K-selected species. Investment in fewer offspring allows for extensive parental care.
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Which species type is more likely to be affected by density-independent factors?
Which species type is more likely to be affected by density-independent factors?
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r-selected species. Population changes driven by external environmental disturbances.
r-selected species. Population changes driven by external environmental disturbances.
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What is a key characteristic of K-selected species?
What is a key characteristic of K-selected species?
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Long gestation periods and fewer offspring. K-selected species prioritize quality over quantity in reproduction.
Long gestation periods and fewer offspring. K-selected species prioritize quality over quantity in reproduction.
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Identify a factor limiting K-selected species' population growth.
Identify a factor limiting K-selected species' population growth.
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Carrying capacity of the environment. Population stabilizes near maximum sustainable population size.
Carrying capacity of the environment. Population stabilizes near maximum sustainable population size.
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What is a life history trait of r-selected species?
What is a life history trait of r-selected species?
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Short lifespan. Fast turnover maximizes reproductive output in limited time.
Short lifespan. Fast turnover maximizes reproductive output in limited time.
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How do K-selected species populations typically grow?
How do K-selected species populations typically grow?
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S-shaped logistic growth curve. Population growth slows as it approaches carrying capacity limits.
S-shaped logistic growth curve. Population growth slows as it approaches carrying capacity limits.
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Which type of species has a lower reproductive rate?
Which type of species has a lower reproductive rate?
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K-selected species. Energy invested in fewer, higher-quality offspring reduces reproductive rate.
K-selected species. Energy invested in fewer, higher-quality offspring reduces reproductive rate.
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Which type of species is more likely to be invasive?
Which type of species is more likely to be invasive?
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r-selected species. Rapid reproduction enables quick establishment in new habitats.
r-selected species. Rapid reproduction enables quick establishment in new habitats.
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What is the typical population size trend for K-selected species?
What is the typical population size trend for K-selected species?
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Stable near carrying capacity. Populations remain close to maximum sustainable levels.
Stable near carrying capacity. Populations remain close to maximum sustainable levels.
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Which type of species invests more energy in offspring care?
Which type of species invests more energy in offspring care?
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K-selected species. Fewer offspring allow for greater parental investment per individual.
K-selected species. Fewer offspring allow for greater parental investment per individual.
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Which species type is better suited for climax communities?
Which species type is better suited for climax communities?
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K-selected species. Competitive advantages suit stable, mature ecosystem conditions.
K-selected species. Competitive advantages suit stable, mature ecosystem conditions.
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What is the typical population size trend for r-selected species?
What is the typical population size trend for r-selected species?
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Fluctuates widely. Boom-and-bust cycles create dramatic population changes.
Fluctuates widely. Boom-and-bust cycles create dramatic population changes.
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What is a survival strategy of r-selected species?
What is a survival strategy of r-selected species?
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Maximizing reproduction rate. High reproductive output compensates for environmental uncertainty.
Maximizing reproduction rate. High reproductive output compensates for environmental uncertainty.
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What is a survival strategy of K-selected species?
What is a survival strategy of K-selected species?
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Investing in offspring quality. Parental investment increases individual offspring survival and fitness.
Investing in offspring quality. Parental investment increases individual offspring survival and fitness.
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Which type of species is more likely to be an apex predator?
Which type of species is more likely to be an apex predator?
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K-selected species. Large size and competitive ability suit top predator roles.
K-selected species. Large size and competitive ability suit top predator roles.
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Which type of species is more likely to exhibit territorial behavior?
Which type of species is more likely to exhibit territorial behavior?
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K-selected species. Territory defense secures resources for fewer, well-cared offspring.
K-selected species. Territory defense secures resources for fewer, well-cared offspring.
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Which species type has typically more offspring per reproductive event?
Which species type has typically more offspring per reproductive event?
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r-selected species. High fecundity maximizes reproductive output per breeding cycle.
r-selected species. High fecundity maximizes reproductive output per breeding cycle.
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Which species type is better suited for pioneer stages of succession?
Which species type is better suited for pioneer stages of succession?
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r-selected species. Rapid colonization ability suits early succession environments.
r-selected species. Rapid colonization ability suits early succession environments.
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