1. Which of the following groups would be most likely to exhibit “uniform” dispersion.
A) common cattail (marsh plant) used for making mats and chair seats, which grow primarily at
edges of lakes and streams
B) moths, in a city at night
C) lake trout, which seek out cold, deep water high in dissolved oxygen
D) Royal Bengal tigers, which actively defend territories
Answer: D
2. A(n) ________ consists of all the populations of multiple species interacting in a designated
region.
A) ecosystem
B) community
C) biosphere
D) None of the choices are correct.
Answer: B
3. A pond represents a(n) ________, while the minnows (small freshwater fish) represent a(n)
________.
A) population; community
B) population; ecosystem
C) ecosystem; population
D) community; population
E) ecosystem; community
Answer: C
4. When discussing population features, a cohort is described as
A) all the individuals in a population born at the same time.
B) all individuals living in the same habitat.
C) all the different species in a community.
D) all the organisms interacting in the ecosystem.
Answer: A
5. Bangladesh has 2,596 persons per square mile, while the United States has 780 persons per
square mile and Canada has 9 persons per square mile. These statistics compare the ________ of
these countries.
A) population densities
B) population distributions
C) carrying capacities
D) rate of natural increase
E) limiting factors
Answer: A
6. Exponential growth of a population is represented by
A) dN/dt = rN
B) dN/dt = rN (K + N)
, C) dN/dt = rN
D) dN/dt = rNrN
E) dN/dt = ∑lx.mx
Answer: A
7. In the accompanying figure, which of the lines represents the lowest per capita rate increase
(r)?
A) line A
B) line B
C) line C
D) line D
Answer: D
8. Population size levels off at the ________ of an environment.
A) population growth
B) biotic potential
C) environmental resistance
D) carrying capacity
Answer: D
9. Consider the life of the praying mantis. The large, predatory female lays several hundred eggs
in a foam mass in the fall. The young are most vulnerable when they emerge in the spring, but
the few that survive spread out over the countryside and, if they find a mate, lay eggs the
following fall. Which type of survivorship curve does this represent?
A) type I
B) type II
C) type III
Answer: C
10. Which of these diagrams represents an age structure diagram of more-developed countries?
● Diagram 1 B. Digram 2
A) Diagram A
B) Diagram B
Answer: A
Use the accompanying diagram to answer the question(s) below.
In this experiment, Balanus was removed from the habitat shown on the left.
11. Which of the following statements is a valid conclusion of this experiment?
A) Balanus can survive only in the lower intertidal zone because it is unable to resist desiccation.
B) Balanus is inferior to Chthamalus in competing for space on rocks lower in the intertidal
zone.
C) The two species of barnacles do not compete with each other because they feed at different
times of day.
A) common cattail (marsh plant) used for making mats and chair seats, which grow primarily at
edges of lakes and streams
B) moths, in a city at night
C) lake trout, which seek out cold, deep water high in dissolved oxygen
D) Royal Bengal tigers, which actively defend territories
Answer: D
2. A(n) ________ consists of all the populations of multiple species interacting in a designated
region.
A) ecosystem
B) community
C) biosphere
D) None of the choices are correct.
Answer: B
3. A pond represents a(n) ________, while the minnows (small freshwater fish) represent a(n)
________.
A) population; community
B) population; ecosystem
C) ecosystem; population
D) community; population
E) ecosystem; community
Answer: C
4. When discussing population features, a cohort is described as
A) all the individuals in a population born at the same time.
B) all individuals living in the same habitat.
C) all the different species in a community.
D) all the organisms interacting in the ecosystem.
Answer: A
5. Bangladesh has 2,596 persons per square mile, while the United States has 780 persons per
square mile and Canada has 9 persons per square mile. These statistics compare the ________ of
these countries.
A) population densities
B) population distributions
C) carrying capacities
D) rate of natural increase
E) limiting factors
Answer: A
6. Exponential growth of a population is represented by
A) dN/dt = rN
B) dN/dt = rN (K + N)
, C) dN/dt = rN
D) dN/dt = rNrN
E) dN/dt = ∑lx.mx
Answer: A
7. In the accompanying figure, which of the lines represents the lowest per capita rate increase
(r)?
A) line A
B) line B
C) line C
D) line D
Answer: D
8. Population size levels off at the ________ of an environment.
A) population growth
B) biotic potential
C) environmental resistance
D) carrying capacity
Answer: D
9. Consider the life of the praying mantis. The large, predatory female lays several hundred eggs
in a foam mass in the fall. The young are most vulnerable when they emerge in the spring, but
the few that survive spread out over the countryside and, if they find a mate, lay eggs the
following fall. Which type of survivorship curve does this represent?
A) type I
B) type II
C) type III
Answer: C
10. Which of these diagrams represents an age structure diagram of more-developed countries?
● Diagram 1 B. Digram 2
A) Diagram A
B) Diagram B
Answer: A
Use the accompanying diagram to answer the question(s) below.
In this experiment, Balanus was removed from the habitat shown on the left.
11. Which of the following statements is a valid conclusion of this experiment?
A) Balanus can survive only in the lower intertidal zone because it is unable to resist desiccation.
B) Balanus is inferior to Chthamalus in competing for space on rocks lower in the intertidal
zone.
C) The two species of barnacles do not compete with each other because they feed at different
times of day.
