Download Sample Exam IV Questions, November 17, 2006

Sample Exam IV Questions, November 17, 2006
1) Which of the following disciplines studies interactions between organisms and between
organisms and their environment?
a. Genetics
b. Evolution
c. Diversity
d. Ecology
e. Environmentalism
2) Which type of interaction between two species is most likely to lead to increased
population growth in both species?
a. Competition
b. Predation
c. Mutualism
d. Parasitism
e. All of the above
3) If the position of each individual in a local area is determined by territorial interactions
between neighbors, then the resulting pattern of dispersion is going to be
a. clumped
b. uniform
c. random
d. rectangular
e. complex.
4) Gause’s Competitive Exclusion Principle states that
a. Territorial animals will exclude others from limiting resources.
b. When a predatory species makes a demand on a prey species, the numbers of the
prey species will decrease.
c. When two species compete for a limiting resource, one will eliminate the other.
d. When a population reaches its carrying capacity, new individuals are excluded
from the population by existing individuals.
e. Each species evolves until it has exclusive use of its own resources, different
from those of other species.
5) What happens to the intrinsic rate of increase in a population experiencing exponential
growth?
a. Increases
b. Reaches a maximum at ½ the carrying capacity
c. Decreases
d. Remains constant
e. None of the above
7) Where does  have its maximum value?
a. A
b. B
c. C
d. D
e. E
Population size
6) In the graph to the right, the order of the realized per captia population growth rates from
highest to lowest is
a. A > B > C
b. B > A > C
C
c. B > A = C
d. C > B > A
e. C = A > B.
D
B
A
E
time
8) Which species of toad is an introduced pest in Australia?
a. Bufo americanus
b. Bufo marinus
c. Bufo laticeps
d. Bufo canus
e. Bufo fowleri
9) Which of the following is NOT one of the environmental causes of density-dependent
change in birth and death rates?
a. Intraspecific competition
b. Territoriality.
c. Accumulation of waste products.
d. Increase in predators or pathogens.
e. Random changes in climate.
10) Which of the following is/are true of a population found in the grey shaded area of the
graph? (Check all that are TRUE.)
a.
b.
c.
d.
e.
The death rate is higher than the birth rate
The birth rate is higher than the death rate
N exceeds the carrying capacity
N is less than the carrying capacity.
The population is growing.
r
N
11) For which type of species interaction do both species benefit?
a. Competition
b. Predation
c. Parasitism
d. Mutualism
e. Commensalism