Chapter 6 Vocabulary Practice Terms
Quiz yourself by thinking what should be in
each of the black spaces below before clicking
on it to display the answer.
Help!
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| age distribution | the comparative percentages of different age groups within a population
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| biotic potential | the inherent reproductive capacity
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| birthrate | the number of individuals born per thousand individuals in the population per year
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| carrying capacity | the optimum number of individuals of a species that can be supported in an area over an extended period of time
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| death phase | the portion of the population growth curve that shows the population declining
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| death rate | the number of deaths per thousand individuals in the population per year
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| density-dependent limiting factors | those limiting factors that become more severe as the size of the population increases
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| density-independent limiting factors | those limiting factors that are not affected by population size
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| dispersal | migration of organisms from a concentrated population into areas with lower population densities
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| emigration | movement out of an area that was once one's place of residence
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| environmental resistance | the combination of all environmental influnces that tend to keep populations stable
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| exponential growth phase | the period during population growth when the population increases at an ever-increasing rate
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| immigration | movement into an area in which one has not previously resided
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| k-strategists | large organisms that have relatively long lives, produce few offspring, provide care for their offspring, and typically have populations that stabilize at the carrying capacity
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| lag phase | the initial stage of population growth during which growth occurs very slowly
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| limiting factors | the one primary condition of the environment that determines the success of an organism
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| mortality | the number of deaths per year
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| natality | the number of individuals added to the population through reproduction
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| population density | a measure of how close organisms are to one another, generally expressed as the number of organisms per unit area
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| r-strategists | typically, a small organism that has a short life span, produces a large number of offspring, and does not reach a carrying capacity
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| sex ratio | comparison between the number of males and females in a population
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| stable equilibrium phase | the phase in a population growth curve in which the death rate and birthrate become equal
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You may also shuffle the rows of the table by clicking on the "Shuffle" button.
Or sort by any of the columns using the down arrow next to any column heading.
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