Population Limiting
Dynamics Factors
Density
Human Actual Test
Problems Population Questions
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The number of organisms per
unit area.
Population Density
The pattern of spacing of a
population within an area.
Dispersion
The type of dispersion displayed
by a herd animal such as
American Bison.
Clumped
The type of growth model in
which growth begins slow and
then increases faster and faster.
Shown by a J-Shaped Graph.
Exponential
The type of growth model in
which the population grows
slowly at first, followed by a
period of rapid growth, and then
the stabilizes at the carrying
capacity. Shown with an SShaped Graph.
Logistic
Any factor in the environment
that depends on the number of
members in a population per unit
area. (Disease, Competition,
Parasites)
Density Dependent
Any factor in the environment
that does NOT depend on the
number of members per unit area.
(Weather, Human Influence)
Density Independent
The type of reproductive
strategists that produces few
offspring and invests a lot of
resources into each offspring.
(Humans, Elephants)
K-strategist
The type of reproductive
strategists that produce many
offspring expending little energy
to each. (Fruit Flies, Mosquitoes)
R-strategist
The maximum number of
individuals in a species that an
environment can support for the
long term.
Carrying Capacity
The number of organisms
moving IN to a population.
Immigration
The number of organisms
moving OUT of a population.
Emigration
A term that explains how fast a
given population grows.
Population Growth Rate
The number of organisms being
born into a population.
Natality
A population of bees starts at
100. If the growth rate is an
increase of 50 bees/year, how
many bees will there be in the
population after 5 years?
350 bees
The study of human population,
density, distribution, movement,
and birth and death rates.
Demography
The number of males and females
in each of three age groups: prereproductive stage, reproductive
stage, and post-reproductive
stage.
Age Structure
A population trend in which birth
rates equal death rates .
Zero Population Growth
The largest factor causing an
increase in the population of the
united states.
Immigration
A change in a population from
high birth and death rates to low
birth and death rates.
Demographic Transition
The size of a population will
decrease if mortality _________.
Increases
Density, distribution, and growth
rate are characteristics used to
classify which one of the
following?
A. Biomes
B. Populations
C. Limiting Factors
D. Age Structure
B. Populations
A flowering plant has seeds that
are carried by the wind. Infer the
most likely dispersion pattern of
the plants that grow from these
seeds.
A. Uniform
B. Clumped Groups
C. Random
D. Spatial
C. Random
The human population growth
rate has always increased. (True
or False)
False
A fruit fly that has a short life
span and produces many
offspring can be classified into
which reproductive strategy?
A. r-strategist
B. k-strategist
C. a carrying-capacity strategist
D. a logistic strategist
A. r-strategist