BIO 1040 TEST QUESTIONS AND ANSWERS
LATEST UPDATE
Thanks to a new conservation program, a population with only 2000 individuals at
the beginning of the year is growing exponentially. The population has a per
capita birth rate of 0.5 per year and a death rate of 0.2 per year. What is the
growth rate during the year? What will the population be at the end of the year?
growth rate = 60 per year; population = 260
Assume that there are five alligators per acre in a swamp in northern Florida. This
is a measure of the alligator population's
density
Which of the following is most clearly a case of density-dependent population
regulation?
a dangerous new flu strain that is transmitted among humans by sneezing
Which of the following is a practical application of population ecology that will
result in population decline?
removing habitat space from wild animal populations
An owl and a hawk both eat mice. Which of the following describes the
relationship between a hawk and an owl?
competition
The density of Douglas firs in an old-growth forest is estimated by counting the
Douglas firs in four sample plots of 1 hectare each. The number of fir trees in the
plots is 10, 12, 7, and 11, respectively. What is the estimated density of firs in the
forest?
10 trees per hectare
An ecologist hypothesizes that predation by a particular owl species is the major
factor controlling the population of a particular rabbit species. The first step in
testing this hypothesis would be to determine
whether the owls eat the rabbits
In terms of population dynamics, what is "boom-and-bust" cycling?
a situation in which a population moves back and forth between rapid growth and
decline
A population of fungi in a yard produces 10 mushrooms in a year 1, 20 in year 2,
and 40 in year 3. If this trend continues, by year 5 there will by
________mushrooms.
160
Which of the following statements regarding food webs is true?
several species of primary consumers may feed on the same species of producer
Camouflage typically evolves as a result of
predation
If a population has a birth rate of 40 individuals per 1000 per year and a death rate
of 30 individuals per 1000 per year, how will the population change each year?
LATEST UPDATE
Thanks to a new conservation program, a population with only 2000 individuals at
the beginning of the year is growing exponentially. The population has a per
capita birth rate of 0.5 per year and a death rate of 0.2 per year. What is the
growth rate during the year? What will the population be at the end of the year?
growth rate = 60 per year; population = 260
Assume that there are five alligators per acre in a swamp in northern Florida. This
is a measure of the alligator population's
density
Which of the following is most clearly a case of density-dependent population
regulation?
a dangerous new flu strain that is transmitted among humans by sneezing
Which of the following is a practical application of population ecology that will
result in population decline?
removing habitat space from wild animal populations
An owl and a hawk both eat mice. Which of the following describes the
relationship between a hawk and an owl?
competition
The density of Douglas firs in an old-growth forest is estimated by counting the
Douglas firs in four sample plots of 1 hectare each. The number of fir trees in the
plots is 10, 12, 7, and 11, respectively. What is the estimated density of firs in the
forest?
10 trees per hectare
An ecologist hypothesizes that predation by a particular owl species is the major
factor controlling the population of a particular rabbit species. The first step in
testing this hypothesis would be to determine
whether the owls eat the rabbits
In terms of population dynamics, what is "boom-and-bust" cycling?
a situation in which a population moves back and forth between rapid growth and
decline
A population of fungi in a yard produces 10 mushrooms in a year 1, 20 in year 2,
and 40 in year 3. If this trend continues, by year 5 there will by
________mushrooms.
160
Which of the following statements regarding food webs is true?
several species of primary consumers may feed on the same species of producer
Camouflage typically evolves as a result of
predation
If a population has a birth rate of 40 individuals per 1000 per year and a death rate
of 30 individuals per 1000 per year, how will the population change each year?
