Download Population Growth Class Activity Practice

Population Growth
Activities
Number your paper #1-14
Write down DI for Density-Independent Growth Factor or DD
for Density-Dependent Growth Factor
1. Freezing Weather
2. Has a greater effect on a
larger population
3. A volcanic eruption
4. Predation
5. Floods
6. Food Supply
7. May limit the population before it
even gets close to its carrying capacity.
8. Disease or parasites
9. Decreases when the population is below carrying
capacity, increases when the population exceeds
carrying capacity
10. Fire
11. Intensity of effect no greater for larger
population, no less for smaller population
12. Clear-cut examples are not
often seen in nature.
13. May cause cyclical changes
in lynx and hare populations
14. Storms
1. Freezing Weather
•DI
2. Has a greater effect on a
larger population
•DD
3. A volcanic eruption
•DI
4. Predation
•DD
5. Floods
•DI
6. Food Supply
•DD
7. May limit the population before it
even gets close to its carrying capacity.
•DI
8. Disease or parasites
•DD
9. Decreases when the population is below carrying
capacity, increases when the population exceeds
carrying capacity
•DD
10. Fire
•DI
11. Intensity of effect no greater for larger
population, no less for smaller population
•DI
12. Clear-cut examples are not
often seen in nature.
•DD
13. May cause cyclical changes
in lynx and hare populations
•DD
14. Storms
•DI
15. A particular species of tropical fish has
only a few offspring and takes care of them for
an extended period. We might also expect the
fish population
• A. to be controlled mostly be
density-independent factors
• B. to show exponential growth
• C. to live in a harsh environment
• D. to start reproducing very young
• E. to be relatively stable, near
carrying capacity
16. Chimpanzees have a relatively low birth
rate. They take good care of their young, and
most chimps live a long life. The chimp
survivorship curve would look like
• A. a line that slopes gradually upward
• B. a relatively flat line that drops steeply
at the end
• C. a line that drops steeply at first, then
flattens out
• D. a line that slopes gradually downward
• E. a horizontal line
17. Locust populations go through periods of
sudden explosive growth, followed by sudden
decline in numbers. Their numbers are
probably regulated by
• A. predation
• B. density-dependent factors
• C. logistic growth
• D. random dispersion
• E. density-independent factors
18. Sea gulls fiercely defend the areas around
their nests in their clifftop breeding colonies.
Within the colony they would show a ___
dispersion pattern.
• A. uniform
• B. random
• C. dense
• D. density-independent
• E. clumped
19. A wildlife biologist is trying to predict what will happen to a
bear population if bear hunting is banned. He had the
equations all worked out but then realized that he had grossly
underestimated the amount of food available to the bears. To
make his predictions more acurate, he will have to go back to
his equations and
• A. decrease N
• B. increase N
• C. decrease K
• D. increase K
• E. decrease r
20. An ecologist would suspect a population is
growing rapidly if it
• A. contains more prereproductive
than reproductive individuals
• B. is near its carrying capacity
• C. is limited only by densitydependent factors
• D. shows a clumped pattern of
dispersion
• E. is far below its carrying capacity
21. An oak tree produces thousands of
acorns, but very few grow into mature oak
trees. The oak tree exhibits a ___ survivorship
curve.
• A. Type I
• B. Type II
• C. Type III
• D. Type I or II
• E. Type I or III
22. When birth rate equals death rate
• A. a population grows rapidly
• B. the size of a population remains
constant
• C. density-dependent limiting factors do
not affect the population
• D. a population is in danger of extinction
• E. a population goes through up and
down cycles
23. If you wanted to see what percentage of
the population of Thailand is under 10 years
old, you could look at
• A. a logistic curve for the population
• B. the population’s age structure
• C. a life table for the population
• D. a plot of population density
• E. the population’s survivorship
24. To determine the density of a rabbit
population, you would need to know the
number of rabbits and
• A. the factors that limit population
growth
• B. their birth rate
• C. the area in which they live
• D. their population growth rate
• E. their pattern of dispersion
15. A particular species of tropical fish has
only a few offspring and takes care of them for
an extended period. We might also expect the
fish population
• A. to be controlled mostly be
density-independent factors
• B. to show exponential growth
• C. to live in a harsh environment
• D. to start reproducing very young
• E. to be relatively stable, near
carrying capacity
16. Chimpanzees have a relatively low birth
rate. They take good care of their young, and
most chimps live a long life. The chimp
survivorship curve would look like
• A. a line that slopes gradually upward
• B. a relatively flat line that drops steeply
at the end
• C. a line that drops steeply at first, then
flattens out
• D. a line that slopes gradually downward
• E. a horizontal line
17. Locust populations go through periods of
sudden explosive growth, followed by sudden
decline in numbers. Their numbers are
probably regulated by
• A. predation
• B. density-dependent factors
• C. logistic growth
• D. random dispersion
• E. density-independent factors
18. Sea gulls fiercely defend the areas around
their nests in their clifftop breeding colonies.
Within the colony they would show a ___
dispersion pattern.
• A. uniform
• B. random
• C. dense
• D. density-independent
• E. clumped
19. A wildlife biologist is trying to predict what will happen to a
bear population if bear hunting is banned. He had the
equations all worked out but then realized that he had grossly
underestimated the amount of food available to the bears. To
make his predictions more acurate, he will have to go back to
his equations and
• A. decrease N
• B. increase N
• C. decrease K
• D. increase K
• E. decrease r
20. An ecologist would suspect a population is
growing rapidly if it
• A. contains more prereproductive
than reproductive individuals
• B. is near its carrying capacity
• C. is limited only by densitydependent factors
• D. shows a clumped pattern of
dispersion
• E. is far below its carrying capacity
21. An oak tree produces thousands of
acorns, but very few grow into mature oak
trees. The oak tree exhibits a ___ survivorship
curve.
• A. Type I
• B. Type II
• C. Type III
• D. Type I or II
• E. Type I or III
22. When birth rate equals death rate
• A. a population grows rapidly
• B. the size of a population remains
constant
• C. density-dependent limiting factors do
not affect the population
• D. a population is in danger of extinction
• E. a population goes through up and
down cycles
23. If you wanted to see what percentage of
the population of Thailand is under 10 years
old, you could look at
• A. a logistic curve for the population
• B. the population’s age structure
• C. a life table for the population
• D. a plot of population density
• E. the population’s survivorship
24. To determine the density of a rabbit
population, you would need to know the
number of rabbits and
• A. the factors that limit population
growth
• B. their birth rate
• C. the area in which they live
• D. their population growth rate
• E. their pattern of dispersion