Science Quiz / ECOLOGY Ch8-11

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Can you name the Ecology Terms?

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DefinitionTerm
the variable traditionally plotted on the horizontal, or 'x' axis of a scatter plot
the actual niche of a species whose distribution is restricted by biotic interactions such as competition, predation, disease, and parasitism
a group of individuals that are physically distinctive and engage in specialized behavior within a social unit, such as a colony
chemical substance secreted by some animals for communication with other members of their species
a group of spatially separated subpopulations connected by active exchange of individuals among subpopulations
an area of population ecology concerned with the factors influencing the expansion, decline, or maintenance of populations, including rates of births, deaths, immigration, and emig
sexual selection occuring when members of one sex choose mates from among the members of the opposite sex on the basis of some anatomical or behavioral trait, generally leading to
sex that produces larger, more energetically costly gametes (eggs or ova)
a group of individuals of the same age
a distribution of individuals in a population in which individuals are uniformly spaced
a graphical summary of patterns of survival in a population
the environmental factors that influence the growth, survival, and reproduction of a species
Study of the relationships between organisms and environment that are mediated by behavior
a table of age-specific survival and death, or mortality, rates in a population
a pattern of growth that produces a sigmoidal, or s-shaped, population growth curve
a portion of a larger population, with which it sustains a connection through immigration and emigration
number of offspring contributed by an individual relative to the number of offspring produced by other members of the population.
population growth that produces a j-shaped pattern of population increase
results from differences in reproductive rates among individuals as a result of differences in mating success due to intrasexual selection, intersexual selection, or a mixture of t
lambda; ratio of the population size at 2 points in time
variable traditionally plotted on the vertical or 'y' axis of a scatter plot
active or passive downstream movement of stream organisms
phenomena that takes place on a local scale
a branch of biology concerned with the study of social relations
a distribution in which individuals within a population have an equal chance of living anywhere within an area
the conditions under which helping kin should be favored by natural selection
highly specialized sociality generally including individuals of more than one generation living together, cooperative care of young, and division of individuals into sterile, or no
DefinitionTerm
overall fitness, which is determined by the survival and reproduction of an individual, plus the survival and reproduction of genetic relatives of the individual
the geographic range of an organism or the spatial arrangement of individuals in a local population
sex that produces smaller, less costly gametes (sperm or pollen)
the number of individuals in a population per unit area
biotic factors in the environment, such as disease and competition
an s-shaped pattern of population growth, with population size leveling off at the carrying capacity of the environment
change in density of a predator population in response to increased prey density
symbolized as r, equals per capita birthrate minus per capita death rate
selection in which individuals increase their inclusive fitness by helping increase the survival and reproduction of relatives that are not offspring
k; the maximum population of a species that a particular ecosystem can sustain
the physical conditions under which a species might live, in the absence of interactions with other species
group living generally involving some degree of cooperation between individuals
a group of individuals of a single species inhabiting a specific area
phenomena of a geographic scale rather than a local scale
distribution of individuals among age groups in a population; often called age structure
abiotic factors in the environment, such as floods and extreme temperature
a statistic used to measure how much a sample distribution differs from a theoretical distribution
increasing the complexity of the environment of captive animals to foster behaviors characteristic of the species in the wild
line that best fits the relationship between 2 variables, x and y
a population in which the the proportion of individuals in each age class is constant
the total number of individuals, or biomass, of a species present in a specified area
increase in animal feeding rate, which eventually levels off, that occurs in response to an increase in food availability
population growth in which generations do not overlap and in which successive generations differ in a size by a constant ratio
sexual selection in which individuals of one sex compete among themselves for mates
a pattern of distribution in a population in which individuals have a much higher probability of being found in some areas than in others
maximum per capita rate of population increase; may be approached under ideal environmental conditions for a species.

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