Biology 104 Exam 4 Questions and
Answers
What is Mullerian mimicry? - Answer -two or more unpalatable species resemble each
other
What is Batesian mimicry? - Answer -a harmless species mimics a harmful one
What is a population? - Answer -a group of individuals of the same species living in the
same area at the same time
What is a species range? - Answer -its distribution across the environment
What is demography? - Answer -The scientific study of population characteristics.
What is population size? - Answer -the number of individuals in a population
What is abundance? - Answer -The number of individuals of a species in a given space
What is complete enumeration? - Answer -All members of the whole population are
measured
What is population sampling? - Answer -Identifying individual numbers in small areas
and then extrapolating to estimate population totals.
What is the mark-recapture method? - Answer -animals are trapped, marked, and then
recaptured after a period of time
What is radio telemetry? - Answer -transmitter used to follow movement
What is population density? - Answer -Number of individuals per unit area
What is dispersion? - Answer -movement of a species into or outside of an area
What is clumped dispersion? - Answer -where individuals are clustered together.
What is uniform dispersion? - Answer -individuals are evenly distributed
, What is random dispersion? - Answer -the position of each individual is independent of
other individuals
What is age structure? - Answer -the number of males and females of each age a
population contains
What is age distribution? - Answer -the relative number of organisms of each age in a
population
What is the sex ratio? - Answer -the number of males per hundred females
What is population variability? - Answer -naturally occurring genetic differences among
individuals of the same species
What is sexual dimorphism? - Answer -high degree of male/female sexual traits
What is metamorphosis? - Answer -A change in form resulting from normal
development
What is immigration? - Answer -Movement of individuals into a population
What is emigration? - Answer -movement of individuals out of a population
What is a J-shaped curve? - Answer -exponential growth
What is an exponential curve? - Answer -j-shaped growth curve because there is no
carrying capacity.
What is the S-shaped curve? - Answer -the shape of the logistic growth model when
graphed
What is a logistic curve? - Answer -s-shaped growth curve because of limited resources
What is carrying capacity? - Answer -The largest population that an area can support
What are limiting resources? - Answer -food, water, shelter
What is the r-strategy? - Answer -focus is on reproducing as much as possible
What is the K strategy? - Answer -survival of populations by reproduction
What is a density-dependent factor? - Answer -limiting factor that depends on
population size
What is a density-independent factor? - Answer -A factor that effects populations
regardless of their size or density.
Answers
What is Mullerian mimicry? - Answer -two or more unpalatable species resemble each
other
What is Batesian mimicry? - Answer -a harmless species mimics a harmful one
What is a population? - Answer -a group of individuals of the same species living in the
same area at the same time
What is a species range? - Answer -its distribution across the environment
What is demography? - Answer -The scientific study of population characteristics.
What is population size? - Answer -the number of individuals in a population
What is abundance? - Answer -The number of individuals of a species in a given space
What is complete enumeration? - Answer -All members of the whole population are
measured
What is population sampling? - Answer -Identifying individual numbers in small areas
and then extrapolating to estimate population totals.
What is the mark-recapture method? - Answer -animals are trapped, marked, and then
recaptured after a period of time
What is radio telemetry? - Answer -transmitter used to follow movement
What is population density? - Answer -Number of individuals per unit area
What is dispersion? - Answer -movement of a species into or outside of an area
What is clumped dispersion? - Answer -where individuals are clustered together.
What is uniform dispersion? - Answer -individuals are evenly distributed
, What is random dispersion? - Answer -the position of each individual is independent of
other individuals
What is age structure? - Answer -the number of males and females of each age a
population contains
What is age distribution? - Answer -the relative number of organisms of each age in a
population
What is the sex ratio? - Answer -the number of males per hundred females
What is population variability? - Answer -naturally occurring genetic differences among
individuals of the same species
What is sexual dimorphism? - Answer -high degree of male/female sexual traits
What is metamorphosis? - Answer -A change in form resulting from normal
development
What is immigration? - Answer -Movement of individuals into a population
What is emigration? - Answer -movement of individuals out of a population
What is a J-shaped curve? - Answer -exponential growth
What is an exponential curve? - Answer -j-shaped growth curve because there is no
carrying capacity.
What is the S-shaped curve? - Answer -the shape of the logistic growth model when
graphed
What is a logistic curve? - Answer -s-shaped growth curve because of limited resources
What is carrying capacity? - Answer -The largest population that an area can support
What are limiting resources? - Answer -food, water, shelter
What is the r-strategy? - Answer -focus is on reproducing as much as possible
What is the K strategy? - Answer -survival of populations by reproduction
What is a density-dependent factor? - Answer -limiting factor that depends on
population size
What is a density-independent factor? - Answer -A factor that effects populations
regardless of their size or density.
