Font size
Worksheets11.2 Characteristics of Populations
Total questions: 35
Worksheet time: 24mins
How fast a population changes in size over time.
(a)
Under ideal conditions, populations of most species can grow at (a) rates.
The purpose of migration usually is to find food, mates, or other (a) .
A clumped population distribution always has more individuals than a uniform distribution
True
False-same
False-less
Population growth rate is how fast a population changes in size over time
True
False-birth
False-death
A population's age-sex structure influences population growth,
as older people are more likely to reproduce
as younger people are more likely to reproduce
Dispersal refers to offspring moving away from their parents
True
False-Assembly
False-Collection
Population (a) is the number of individuals in a population.
With a type I survivorship curve,
most of the offspring survive to adulthood to reproduce
some of the offspring survive to adulthood to reproduce
none of the offspring survive to adulthood to reproduce
A (a) curves represents the number of individuals still alive at each age.
Populations gain individuals through births and emigration
True
False-immigration
Logistic growth levels out at the carrying capacity
True
False-expontential
K-selected population growth is controlled by density-dependent factors
True
False-independent
Most populations live under ideal conditions, so they grow at exponential rates
True
False-do not live
Immigration is the regular movement of individuals or populations during seasons
True
False-Emigration
False-Migration
Population (a) may be clumped, random, or uniform.
The carrying capacity is the largest population size that
can be supported in an area without harming the environment
can be supported in an area with harming the environment
can not be supported in an area w/o harming the environment
Which survivorship curve do parents produce moderate #s of offspring&provide some parental care
2
1
3
With a random population distribution, organisms are clustered together in groups
True
False-uniform
False-clumped
A positive population growth rate means a population is increasing
True
False-decreasing
Species that live in unstable environments are usually r-selected, and
their population size is usually below the carrying capacity
their population size is usually above the carrying capacity
Which would represent a population
All the fish in an aquarium
All the dogs in your neighborhood.
All the animals in the local zoo.
The age-sex structure of a quickly growing population would probably have
a wide base, showing many young individuals
a wide top, showing many older individuals.
a wide middle area, showing many middle-aged individuals.
Population growth under limiting conditions.
(a)
Humans have a type ______ survivorship curve, as ________________.
II, parents produce moderate numbers of children.
III most of the offspring survive to adulthood to reproduce.
I, most of the offspring survive to adulthood to reproduce.
I, parents produce moderate numbers of children.
Dispersal refers to offspring moving (a) from their parents.
Population growth can be represented by the equation r =
(b + e) - (d + i)
(b + i) - (d + e)
(b + d) - (i + e)
(d + i) - (b + e)
The average number of individuals in a population per unit of area or volume.
(a)
During exponential growth,
the larger the population becomes, the slower it grows.
population growth slows & population size levels off.
as population size increases,the growth rate also increases.
Coming into the population from somewhere else
(a)
The carrying capacity of a population
is reached as resources become limiting.
is reached at the end of exponential growth.
is reached in r-selected populations.
The largest population size that can be supported in an area without harming the environment.
(a)
Which of the following are examples of density-dependent factors?
food
food and disease
food,disease,rainfal
Species that live in (a) environments are likely to be K-selected.
When organisms must compete for resources, they will usually have a ____________ distribution.
uniform
random
clumped
