EXAM 3 ASU BIO REAL NEWEST EXAM VERSION |182 QUESTIONS
AND ANSWERS GRADED A
1. Which group is not a population?: all four groups are populations
2. How would you estimate the number of whales in a population?: mark and
recapture
3. What is a population?: a group of individuals of the same species living in the
same area at the same time
4. True or False? Sampling quadrats would be the better method for estimating
the number of whales in a population.: false
5. True or False? Mark and recapture would be the better method for estimating
the number of saguaros in a population.: true
6. True or False? The shrinking population between 1965 and 1970 could have
resulted from a decrease in the birth rate or an increase in the death rate.: true
7. True or False? The growing population between 1985 and 1995 could have
resulted from a decrease in emigration or an increase in immigration.: true
8. The human population has grown : exponentially
9. The growth of a population depends on : the birth rate
minus the death rate.
10. A population stops growing when it : reaches its
carrying capacity.
11. True or False? The carrying capacity of a population depends on the
resources available in the environment.: true
12. Why do bluegills nest on the edge of the lake?: The habitat in the shallow
water might receive more solar radiation, holds more zooplankton (which is what
they eat), more protective over young than it in deeper water where larger fish reside,
more algae for the fish to hide in, warmer water for embryos to develop quickly and
enhance survival/fitness.
13. Activity: Write a Figure Legend: Bluegills prefer certain water temp; when
given a choice between 27 degrees celsius and 31 degrees celsius, bluegills spent
a majority of their time at 31 degrees celsius.
14. True or False? If males compete for space, a large male will likely force
a small male to spend less time on the side of the tank with the optimal
temperature.: true
15. True or False? Both models assume that no individuals immigrate into the
population.: false
16. t/f: When possible, a bluegill prefers to have a body temperature around
31°C.: true
17. T/F: When competing with an adult, a juvenile bluegill will always have a
lower body temperature than its preferred temperature.: False (If the environ-
,EXAM 3 ASU BIO REAL NEWEST EXAM VERSION |182 QUESTIONS
AND ANSWERS GRADED A
ment hotter than preferred, on average, large bluegill will force small bluegills to
remain in parts of water that are hotter than preferred)
, EXAM 3 ASU BIO REAL NEWEST EXAM VERSION |182 QUESTIONS
AND ANSWERS GRADED A
18. T/F: All else being equal, the carrying capacity of a lake would likely
increase as more parts of the lake warm to 31°C.: true
19. T/F: All else being equal, a juvenile bluegill will likely grow slower in a lake
with many adult bluegills than in a lake with few adults: true
20. T/F: The growth of a bluegill population would be better described by
a model without density dependence than by a model with density depen-
dence.: false, Because access to suitable temperatures is limited, the growth of the
population will have a carrying capacity, which requires density dependence
21. T/F: The number of whales was more likely estimated by sampling than by
mark-recapture.: false
22. T/F: The shrinking population between 1965 and 1970 could have resulted
from a decrease in the birth rate or an increase in the death rate.: true
23. T/F: The growing population between 1985 and 1995 could have resulted
from a decrease in emigration or an increase in immigration.: true
24. T/F: Between 2005 and 2008, the sum of the birth and immigration rates
roughly equaled the sum of the death and emigration rates.: true
25. T/F: The growth of this population would be described well by an exponen-
tial model.: false
26. in 1904, Joseph Grinnel argued that "Two species of approximately the
same food habits are not likely to remain long evenly balanced in numbers
in the same region. One will crowd out the other." This idea became known
as . we can say that two species cannot coexist in the same environ-
ment if they require identical resources.: competitive exclusion principle
27. T/F: The model of competition between species can ignore competition
within species: false
28. T/F: The larger the competitive effect on a species (alpha or beta), the more
likely the species will persist during competition.: false
29. T/F: When two species have different niches, the competition coefficients
(alpha and beta) are likely to be less than 1.0.: true
30. T/F: If two species compete, neither species will reach its carrying capacity
before one of the species goes extinct.: true
31. T/F: The rate of population growth (r) determines whether a species can
persist during competition.: false
32. T/F: A realized niche is usually larger than a fundamental niche: false
33. True or False? Competing species are more likely to coexist if their growth
rates (r1 and r2) increase.: false
34. True or False? Paramecium are most likely to persist at intermediate
AND ANSWERS GRADED A
1. Which group is not a population?: all four groups are populations
2. How would you estimate the number of whales in a population?: mark and
recapture
3. What is a population?: a group of individuals of the same species living in the
same area at the same time
4. True or False? Sampling quadrats would be the better method for estimating
the number of whales in a population.: false
5. True or False? Mark and recapture would be the better method for estimating
the number of saguaros in a population.: true
6. True or False? The shrinking population between 1965 and 1970 could have
resulted from a decrease in the birth rate or an increase in the death rate.: true
7. True or False? The growing population between 1985 and 1995 could have
resulted from a decrease in emigration or an increase in immigration.: true
8. The human population has grown : exponentially
9. The growth of a population depends on : the birth rate
minus the death rate.
10. A population stops growing when it : reaches its
carrying capacity.
11. True or False? The carrying capacity of a population depends on the
resources available in the environment.: true
12. Why do bluegills nest on the edge of the lake?: The habitat in the shallow
water might receive more solar radiation, holds more zooplankton (which is what
they eat), more protective over young than it in deeper water where larger fish reside,
more algae for the fish to hide in, warmer water for embryos to develop quickly and
enhance survival/fitness.
13. Activity: Write a Figure Legend: Bluegills prefer certain water temp; when
given a choice between 27 degrees celsius and 31 degrees celsius, bluegills spent
a majority of their time at 31 degrees celsius.
14. True or False? If males compete for space, a large male will likely force
a small male to spend less time on the side of the tank with the optimal
temperature.: true
15. True or False? Both models assume that no individuals immigrate into the
population.: false
16. t/f: When possible, a bluegill prefers to have a body temperature around
31°C.: true
17. T/F: When competing with an adult, a juvenile bluegill will always have a
lower body temperature than its preferred temperature.: False (If the environ-
,EXAM 3 ASU BIO REAL NEWEST EXAM VERSION |182 QUESTIONS
AND ANSWERS GRADED A
ment hotter than preferred, on average, large bluegill will force small bluegills to
remain in parts of water that are hotter than preferred)
, EXAM 3 ASU BIO REAL NEWEST EXAM VERSION |182 QUESTIONS
AND ANSWERS GRADED A
18. T/F: All else being equal, the carrying capacity of a lake would likely
increase as more parts of the lake warm to 31°C.: true
19. T/F: All else being equal, a juvenile bluegill will likely grow slower in a lake
with many adult bluegills than in a lake with few adults: true
20. T/F: The growth of a bluegill population would be better described by
a model without density dependence than by a model with density depen-
dence.: false, Because access to suitable temperatures is limited, the growth of the
population will have a carrying capacity, which requires density dependence
21. T/F: The number of whales was more likely estimated by sampling than by
mark-recapture.: false
22. T/F: The shrinking population between 1965 and 1970 could have resulted
from a decrease in the birth rate or an increase in the death rate.: true
23. T/F: The growing population between 1985 and 1995 could have resulted
from a decrease in emigration or an increase in immigration.: true
24. T/F: Between 2005 and 2008, the sum of the birth and immigration rates
roughly equaled the sum of the death and emigration rates.: true
25. T/F: The growth of this population would be described well by an exponen-
tial model.: false
26. in 1904, Joseph Grinnel argued that "Two species of approximately the
same food habits are not likely to remain long evenly balanced in numbers
in the same region. One will crowd out the other." This idea became known
as . we can say that two species cannot coexist in the same environ-
ment if they require identical resources.: competitive exclusion principle
27. T/F: The model of competition between species can ignore competition
within species: false
28. T/F: The larger the competitive effect on a species (alpha or beta), the more
likely the species will persist during competition.: false
29. T/F: When two species have different niches, the competition coefficients
(alpha and beta) are likely to be less than 1.0.: true
30. T/F: If two species compete, neither species will reach its carrying capacity
before one of the species goes extinct.: true
31. T/F: The rate of population growth (r) determines whether a species can
persist during competition.: false
32. T/F: A realized niche is usually larger than a fundamental niche: false
33. True or False? Competing species are more likely to coexist if their growth
rates (r1 and r2) increase.: false
34. True or False? Paramecium are most likely to persist at intermediate
