NAME ____________________________ Per _______
UNIT 3 Exam
Population Biology
1. An ecosystems carrying capacity for a
population is determined by all of the
following factors EXCEPT
A. Space
B. Energy
C. Water
D. Food
E. Climactic events
2.
Which type of population distribution would
enhance protection from predators?
A. Random distribution
B. Uniform distribution
C. Clumped distribution
D. Both a and c
E. None of the above
3.
When organisms are found to be distributed
uniformly throughout an ecosystem it is often
because
A. They form social groups
B. They are interbreeding
C. Resources are not limited
D. They mate for life
E. They are territorial
4.
The human population is currently following
a J-shaped curve. This means that the
population is growing
A. Arithmetically
B. Exponentially
C. Logistically
D. Sigmoidally
E. Decreasingly
5.
Tagging is used to do all of the following
except
A. Track individuals
B. Count population
C. Locate an individual
D. Monitor movement
E. Monitor Numbers
6.
Punching is often used to track and monitor
animal population instead of plastic or metal
tags because it
A. Is more expensive
B. Will not fall off
C. Gets caught on shrubs
D. Attracts predators
E. Is less painful
7.
The intrinsic growth rate of a population
A. Directly affects environmental resistance
B. Causes changes in birth rates
C. Causes changes in death rates
D. Is the maximum rate at which a
population may increase
E. All of the above
8. Rapid growth may temporally be observed in
a population in response to all of the
following EXCEPT
A. Elimination of a pollutant
B. Elimination of predators
C. Increase food supply
D. Introduction od a new parasite
E. Introduction into a new habitat
9.
The diagram above represents
A. Logistic growth
B. Exponential growth
C. Carry capacity
D. Death rate
E. Birth Rate
10. A population of rabbits, introduced to an
island, has rapid growth for a few years; then
its growth slows. The population becomes
stable because
A. The carrying capacity has been
reached
B. Environmental resistance declines
C. Immigration is reduced
D. R declines
E. Bergman’s principal takes effect
Population Dynamics
11. Developing countries tend to have an ________
age structure diagram
A. Rectangular shaped
B. Inverted triangle
C. Pyramid shaped
D. Square
E. Round
12. The following is an example of an animal that
exhibits R reproductive strategies.
A. Cows
B. Rabbits
C. Elephants
D. Humans
E. Kangaroos
13. An animal that has K reproductive strategies
does all of the following except
A. Have a few, large offspring
B. Adults are typically large in size
C. Give some type if parental care
D. Reach reproductive maturity early
E. Stabilize near carrying capacity
14. If a population age structure diagram looks
like a pyramid, the population is
A. Expanding
B. Shrinking
C. Remaining the same
D. Will expand for one generation
E. Slowing
A
C
B
C
15. Using the figures above, choose the
statement that best describes population A.
A. This is a developed nation
B. Women have access to education
C. Women have access to family
planning
D. Birth rates are above replacement
level fertility
E. The population will double in two
years
16. Population B represents a population that is
A. Growing quickly
B. Growing slowly
C. Stable
D. Declining
E. Not enough data to tell
17. At current growth rates, which country will
probably be the most populous in the world
after 2050?
A. China
B. Brazil
C. India
D. Indonesia
E. United states
18. Which of the following statements about
China’s one child policy are incorrect?
A. It has resulted in male dominance
B. It has created a larger middle class
C. Families are given economic
incentives to have less children
D. China uses less resources as a result
E. Chinas population has begun to
stabilize
19. Education of women has a direct correlation
with
A. Lower birth rates
B. Higher birth rates
C. Economic decline
D. Economic gain
E. Woman’s health
20. ___________ is an example of a developing
country and ____________ is and example of a
developed country.
A. U.S., Russia
B. China, Denmark
C. China, India
D. U.S., China
E. France, China
Population Size and Impacts
21. At the start of a study there were 200 spotted
salamanders in an old-growth forest patch in
northern California. Over the next year a
biologist tracking the salamanders saw that
25 new salamanders hatched and 5 died.
Thus r for this year was _______
A. 0.1
B. 5
C. 20
D. 25
E. 200
22. The most critical factor in controlling human
population growth is
A. Controlling reproductive lifespan
B. Decreasing the age of first birth
C. Degreasing the average number of
births per woman
D. Decreasing infant death
E. Increasing overall wellness for the
human race.
23. A population of river otters has a growth rate
of r=.2 per year. If the population started at
50 individuals and there is no migration, how
many would you expect after one year?
A. 10;2
B. 52;54
C. 60;70
D. 60;72
E. 70;90
24. The total fertility rate is an estimate of
A. The number of children that will
survive to adulthood.
B. The number of years a typical infant
will live
C. The number of children each woman
will have
D. The number of births her 1000 people
per year
E. The percentage of woman in a
population that are able to have
children
25. If a population of 100 birds increases to 120
birds the following year, r= ________
A. .16
B. .20
C. 1.2
D. 2
E. 20
26. Population growth rates are high in
developing countries because
A. Infant mortality rates are low
B. Women tend to have children late in
life
C. Family planning is common
D. Children are often an important
economic advantage
E. All of the above
27. Which developed country has the fastest
population growth rate today?
A. France
B. Denmark
C. Nigeria
D. United States
E. Russia
28. At present, Earths human population is
A. Stable
B. Declining
C. Increasing exponentially
D. Increasing at a constant rate
E. Increasing at about 10% a year
29. U.S. citizen have a large ecological footprint
because of their high consumption of
A. Food
B. Lumber
C. Energy resources
D. Space
E. All of the above
30. Using the rule of 70, a population growing at
10% would double in
A. 7 years
B. 10 years
C. 15 years
D. 17 years
E. Not enough information provided
31. A countries impact on the environment is
influences by
I.
Population
II.
Technology
III.
Affluence
A. I
B. II
C. III
D. I and III
E. I, II and III
32. Choose the answer that best represents
replacement level fertility
A. 0.5
B. 1.5
C. 2.0
D. 2.5
E. 3.0
33. All of the following are true about
Tuberculosis EXCEPT:
A. Many people world wide are infected white
not all have developed the disease
B. The disease in associated with airborne
transmission
C. Symptoms of the disease include weakness
and coughing up blood
D. The disease primarily affects the stomach
E. Inappropriate use of antibiotics led to
antibiotic resistant strains of the disease
34. A metropolitan region of 100,000 people has
2,000 births, 500 deaths, 200 emigrants and
100 immigrants over a 1 year period. Its
population growth rate is
A. 1.2 percent
B. 1.4 percent
C. 1.6 percent
D. 1.8 percent
E. 2.0 percent
35. A pathogen of an emergent virus that lives in
hundreds of species of birds and is
transmitted by mosquitos is
A. Malaria
B. Avian Flu
C. West Nile
D. Ebola
E. Yersinia pestis
Ecosystem Diversity
36. What is most significant when determining
the diversity of an ecosystem?
A. The number of organisms present
B. The number of species present
C. The amount of land the ecosystem
covers
D. The amount of precipitation an
ecosystem receives
E. The interactions between producers
and consumers
37. Which of the following measures of
biodiversity takes into account the number of
species present and the relative abundance of
the species present?
A. Shannon’s index
B. Species richness
C. Species evenness
D. Biodiversity index
E. Hardy –Weinberg Index
38. In the diagram shown, which pair of
organisms have the closest evolutionary
relationship?
A. Leopard and Lamprey
B. Tuna and Turtle
C. Tuna and Leopard
D. Turtle and Salamander
E. Lamprey and Turtle
39. Based on the diagram which structure is the
most primitive?
A. Vertebral Column
B. Hinged Jaws
C. Four walking legs
D. Amniotic Egg
E. Hair
40. Which of the following is the best description
of evolution?
A. The genetic change in an individual over time
B. The genetic change within a population over
one generation
C. The growth of an individual from birth to
adulthood
D. The increased reproduction of a population
E. The genetic change within a population over
time
41. Based on the diagram above which organism
is the most complex
A. Anthophyta
B. Coniferophyta
C. Pteridophyta
D. Lycopodiophyta
E. Bryophyta
42. Based on the diagram above which organism
has seeds but no flowers
A. Anthophyta
B. Coniferophyta
C. Pteridophyta
D. Lycopodiophyta
E. Bryophyta
43. Which of the following is the best description
of evolution?
F. The genetic change in an individual over time
G. The genetic change within a population over
one generation
H. The growth of an individual from birth to
adulthood
I. The increased reproduction of a population
J. The genetic change within a population over
time
44. If a bird normally has green feathers
produces offspring with blue feathers, this is
most likely a result of:
A. A genetic mutation
B. Evolution
C. Natural selection
D. Natural variation
E. Genotypic variation
48. What occurs when a small group from a
population colonizes a new area?
A. Artificial selection
B. Founder effect
C. Bottleneck effect
D. Sympatric speciation
E. Genetic drift
45. When a population suddenly reduces in size
either from habitat loss, natural disaster or
other changes in the environment, its genetic
variation is affected. When this occurs, it is
known as:
A. Founder effect
B. Geographic isolation
C. Genetic drift
D. Bottleneck effect
E. Mutation
49. Which of the following animals is not listed
as endangered?
A. Rhinos
B. Bluefin Tuna
C. Giraffe
D. Lions
E. Leather back turtle
46. Which of the following is the best example of
artificial selection?
A. Bees pollinating different species of flowers.
B. Adaptation of finches to different sources of
food on different islands
C. An isolated population of frogs develops a
phenotype distinct from the original
population
D. Breeding of horses for speed
E. A small population has an unusually high
percentage of a rare phenotype
50. What is the correct order based on the IUCN
classification of endangered animals
47. Which of the following decreases genetic
variation?
I.
Bottle Neck
II.
Mutation
III.
Genetic Drift
A. I
B. II
C. III
D. I and II
E. I and III
A.
B.
C.
D.
E.
VulnerableEndangered  Critically endangered
VulnerableThreatenedEndangered
ThreatenedEndangered Critically endangered
Threatened  VulnerableCritically endangered
ThreatenedEndangeredExtinct