Chapter 4:
Population Biology
1.
The giant land tortoises of the Galapagos Islands and sequoias of California have among the longest life spans of any organisms. This indicates that they likely employ a strategy of _____.
a.
all of these
b.
slow growth
c.
early sexual maturity
d.
rapid reproduction
Hint
2.
Organisms that employ a strategy of slow reproduction usually require an environment that _____.
a.
has cold days
b.
is stable
c.
fluctuates from year to year
d.
has 24-hour growing periods
Hint
3.
Which of the following problems do immigration and emigration pose for demographers?
a.
Demographers find it difficult to make predictions about populations.
b.
Demographers must provide for more city services.
c.
Demographers study growth rates, age structures, and geographic distributions of populations.
d.
Demographers cannot identify the age structure of immigrants.
Hint
4.
For a particular species, the carrying capacity is the maximum number of individual organisms that _____.
a.
are in their post-reproductive years
b.
the species could reach in a given time period if all the offspring survive and reproduce
c.
could be supported by any environment over a period of one year
d.
could be supported by a given environment indefinitely
Hint
5.
The effect of movement of people between counties has _____ effect on total world population.
a.
a great
b.
no
c.
a damaging
d.
little
Hint
6.
The effect of local population fluctuations in rapidly expanding suburbs may _____ schools, roads, and police and fire services.
a.
none of these
b.
have no effect on
c.
stress
d.
reduce the need for
Hint
7.
Density-independent factors are limiting factors whose effects are _____.
a.
determined by the difference between birthrate and population density
b.
not influenced by population densities
c.
determined by the degree of competition for resources
d.
confined to the habitat of the population
Hint
8.
A population that grows until it reaches its carrying capacity usually has the shape of an _____.
a.
I
b.
J
c.
M
d.
S
Hint
9.
A country that has a stable population is characterized by an age structure that is _____.
a.
largest among reproductive years
b.
about the same among all groups
c.
largest among post-reproductive years
d.
largest among pre-reproductive years
Hint
10.
Bacteria employ a(n) _____ reproductive strategy, a characteristic determined by their small size, rapid maturation, and short life span.
a.
unusual
b.
early
c.
rapid
d.
slow
Hint
