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32 Cards in this Set
- Front
- Back
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Survival to an age when you can reproduce or breed is called.... |
recruitment
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Number of offspring that a female is able to produce under ideal conditions in her lifetime is her.....____ _____ |
biotic potential
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Abiotic and biotic factors that limit a population’s size is.... _____ ______ |
environmental resistance
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Number of individuals/unit area is the.... ____ _____
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Population Density
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Biotic potential kept in check by environmental resistance creates the perfect ___ ____
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population density
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A cyclicing up and down of moose v. wolves or of hares v. foxes is called.... __ __ cycle
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predator-prey
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Competition between members of different species is _____ competition
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interspecific
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Competition obetween memeber of the same species is ____ competition. |
intraspecific
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Bluebirds & Robins competing for worms in your yard is an example of ____ competition. |
interspecific
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Blackbirds competing for the same nesting areas is an example of _____ competition.
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intraspecific
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A species, who if removed from the ecosystem, causes the ecosystem to crash is called a _____ species.
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keystone
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An otter when removed from his ecosytem, causes herbivores like urchins & abalone to wipe out the kelp forest. The kelp is the primary producer. The system fails. The otter is a ____ species.
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keystone
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Too many herbivores can create a situation where they eat all their food. Having a _____ in their midst would keep their population healthy by limiting their numbers.
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predator
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Removing predators has the effect of....
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allowing herbivores to grow like crazy, which eventually causes the herbivore population to crash.
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Controlled hunting, by humans, is actually _____ for herbivores such as deer. It keeps them from starving themselves to death if their populations were to soar.
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good
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A ____ curve results when population is left unchecked and grows out of control.
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J
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A ___ curve results when a population grows exponentially at first but then hits the carrying capacity and then levels off. |
S
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Maximum number of individuals that a population can support without crashing is.... ____ _____
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carrying capacity
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Organisms who have few offspring, care for them a lot, and have high chance of reaching recruitment are called ___-strategists.
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k
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Elephants, kangaroos, humans, hippos, bears are all examples of ___- strategists.
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k
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Organism who have many offspring, give litte or nocare for them, and have a low chance of reaching recruitment are called ____-strategists.
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r
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Roaches, rats, bacteria are all good examples of ___-strategists.
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r
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Minimum number of individuals that a population can have and still survive and recover is called ____ number.
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critical
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Some populations on our planet may have so few numbers left, from human stupdity, that they might go extinct. We say these populations have dipped below the ____ number.
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critical
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An event that is more effective if the population is in close proximity is called a _____ dependent factor
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Density
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A disease, like bubonic plague, wiping-out the majority of population in a city apartment building is an example of a ____ dependent factor.
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Density
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An event that affects the population no matter how close the individuals are to each other is called a density _______ factor.
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independent
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A hard freeze is an example of a density ____ factor. The freeze affects all members equally, whether there's one member or a thousand members in the population.
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independent
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_____ is like predation except that the "predator" lives in or on its "prey" and thus is usually much smaller than its host organism. |
Parasitism |
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Animals consuming producers is called... |
herbivory |
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When two species work symbiotically together and both benefit from this interaction, we refer to it as.... |
mutualism |
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When two species work symbiotically together and one benefits while the other one experiences no effect, we call it.... |
commensalism |
