Population and Life Histories Review (combined)
A group of individuals of the same species inhabiting a given area is called a(n) ________.
The number of individuals of a species per unit of space is called ________.
The location where an organism lives is called its ________.
Separated subpopulations interconnected by the movement of individuals are called ________.
Movement of individuals out of a given population is called ________.
Movement of individuals into a given population is called ________.
Repeated, round-trip movement from one place to another and back again is called ________.
A graphical depiction comparing the relative sizes of different age groups within a population is called a(n)
________.
What are the basic properties of a population?
The term population ________ refers to the rate at which the number of individuals in a population increases or
decreases with time.
To obtain a clear and systematic picture of mortality and survival demographers construct life ________.
A group of individuals born in the same period of time is called a(n) ________.
A ________ life table records the fate of a group of individuals, all born in a single short period of time, from
birth to death.
A ________ life table is constructed by sampling a population to obtain a distribution of age classes during a
single time period.
________ curves plot the logarithmic number of survivors against time.
Type ________ survivorship curves are typical of populations in which the mortality rate of juveniles is very high.
Humans exhibit a Type ________ survivorship curve.
Metapopulation persistence is a dynamic balance between the ________ and (re)colonization of empty habitat
patches.
A ________ population maintains a positive growth rate, producing a surplus of individuals which immigrate
elsewhere.
There is no change in population size when the instantaneous per capita rate of growth or intrinsic rate of
population growth is equal to ________.
Reproduction by a single parent, in which the offspring are genetically identical to the parent, is referred to as
________ reproduction.
Plants that have separate male and female individuals are called ________.
An animal with both male and female organs is called
________ involves a pair bond between one male and one female, whereas ________ occurs when an individual
has two or more mates.
A survivorship curve typical of humans and other mammals, in which survival rate is high throughout the life
span followed by heavy mortality at the end, is categorized as __________________.
A species whose mortality rate is more or less constant throughout the typical lifespan for the species, has a
survivorship curve referred to as _______________________
The maximum number of individuals of a species a habitat may support is termed the ________________.
Factors which alter the this value (above) such as changes in climate, natural disaster or human induced habitat
changes are termed __________________ factors.
Disease, predation on the other hand (above again) are termed ___________________ factors.
In the equation: Growth rate = dN/dt = rN, r = ____________________
As the population reaches k in the equation dN/dt = rN(1-N/K) the value of 1-N/K approaches and eventually
reaches ________.
However, (in the equation above) when k is small the value of 1-N/K is close to ________ and the population
grows quickly.
dN in the equation above reaches its maximum when N = ____________.