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WorksheetsMs,Shaza-Grade 11A-M-Revision T3
Total questions: 90
Worksheet time: 45mins
Which of the following human activities would most likely help maintain Earth's carrying capacity?
Overusing non-renewable energy resources
Practicing sustainable agriculture and water use
Increasing global meat consumption
Replacing forests with urban areas
What is type of fire here:
Tree crown fires
ground fires
secondary fires
What is type of fire here:
Tree crown fires
ground fires
secondary fires
Why these two situations involving fire have different results on the pine tree populations.
Crown fires promote growth, while ground fires limit growth
Crown fires limit growth, while ground fires promote growth
Both crown fires and ground fires limit growth
Both crown fires and ground fires promote growth
How did human activities such as building dams and water barriers change the characteristics of the
Colorado River?
By increasing water flow and biodiversity
By reducing water flow and altering water temperature
By enhancing biodiversity and promoting native fish species
How does pollution resulting from human activities affect populations ?
By increasing available resources
By enhancing biotic factors
By making resources toxic and reducing availability
Which is a density- independent factor?
competition
extreme cold
parasites
predation
Which of the following depends on the number of members in a population per
unit area?
An abiotic factor
A density-dependent factor
A density-independent factor
A biotic factor
Why is disease considered a density-dependent environmental factor?
Population density affects amount of contact.
Disease spreads easily in a low-density population.
Disease won't spread in high-density populations.
Disease may be influenced by weather.
Which is a density-independent factor for a flock of Canada geese on a large lake?
Intestinal worms
Infectious
Dwindling food supply
Unusually cold winter
Which of the following is a density-dependent factor
The Competition
The drought
The flooding
The hurricane
What do the results from the study on the wolf–moose
populations show?
The wolf population was not affected by the moose population
The moose population was only affected by abiotic factors
The rise and fall of both populations were dependent on each other
The rise and fall of both populations were independent of each other
The figure below shows the long-term study of the wolf and moose populations on isle Royale. The figure shows the
relationship between the number of predators and prey over time, Study
it and then answer the question
What was the approximate ratio of moose to wolves in 1985?
Lemmings are mammals that produce offspring in
large numbers when food is plentiful. When the food supply diminishes, lemmings starve and many die. Which of the following factors influences Lemmings population size?
Predation
Disease
Parasites
Competition
Which statement describes the ground fire effect on the population ?
thickening lower growing plants .
new plants grow from seeds that the wind carries to the area
healthier population of mature ponderosa pines is produced.
limits the population of ponderosa trees by killing many of the trees
Which statement describes the crown fire effect on the population ?
thickening lower growing plants .
new plants grow from seeds that the wind carries to the area.
healthier population of mature ponderosa pines is produced.
limits the population of ponderosa trees by killing many of the trees.
Which limiting factor is dependent on the density of the population?
contagious fatal virus
dumping toxic waste in a river
heavy rains and flooding
widespread forest fires
Which is a density-independent factor?
severe drought
an intestinal parasite
a fatal virus
severe overcrowding
Which is a density-independent factor?
.competition
extreme cold
parasites
predation
population growth under limiting conditions
exponential growth
logistic growth
population density
population pyramid
population growth under ideal conditions
exponential growth
logistic growth
population density
population pyramid
What happens when a population nears carrying capacity?
Resources become abundant.
Resources become scarce.
Disease spreads less easily.
Density independent factors increase.
Which population growth model does this graph
illustrate?
straight-line growth
logistic growth
lag phase
exponential growth
Which part of the graph indicates the carrying capacity of the habitat?
1
2
3
4
What do the time periods 1-7 represent?
acceleration growth phase
exponential growth
carrying capacity
lag phase
What should the horizontal line on this graph be
labeled?
exponential growth
geometric growth
carrying capacity
straight-line growth
the growth rate is proportional to the size of the population
exponential growth
logistic growth
Lag phase
geometric growth
a population's growth slows or stops as it reaches the carrying capacity
exponential growth
logistic growth
Lag phase
geometric growth
If angelfish produce hundreds of young several times a year. which statement below is true pattern
Angelfish have a k-strategy reproductive pattern
Angelfish have an r-strategy reproductive pattern
Angelfish probably have a low mortality rate
Angelfish provide a lot of care for their young
What term is used to describe the number of individuals moving into a population?
emigration
imitation
immigration
migration
What term is used to describe the number of individuals born in a given time period?
emigration
natality
immigration
mortality
What term is used to describe the number of individuals moving out a population?
emigration
natality
immigration
mortality
What term is used to describe the number of deaths that occur in the population during a given time period?
emigration
natality
immigration
mortality
Which factor can limit the carrying capacity of a population?
emigration
predation
available nutrients
extreme temperatures
Why does the population growth level off at 10,000?
Biotic factors have made survival difficult.
The population has reached its carrying capacity.
Density-independent factors have slowed the growth of the population.
Immigration into the population has reached the maximum limit.
Label the graph
A: Carrying capacity
B: S- curve
C: Lag phase
A: S- curve
B: Lag phase
C: Carrying capacity
A: Lag phase
B: S- curve
C: Carrying capacity
During exponential growth,_______________
population growth eventually slows and population size levels
as population size increases, the growth rate also increases
all of the above
exponential growth shape
J
r
S
K
The carrying capacity of a population____________
is reached when the environment begins to be harmed
is reached in r-selected populations
is reached at the end of exponential growth
is reached as resources become limiting
If a population grows larger than its environmental The carrying capacity, then __________________
birth rate may rise significantly
death rate may fall significantly
death rate may rise
immigration rate may increase
What does the term carrying capacity describe?
The maximum number of birth rates for a population
The ability of a population to accept new immigrants
The ratio of birth rates to death rates in a population
The population size that the environment can sustain
Which organism follows an r-strategy for reproduction?
human
mayfly
zebra
robin
If angelfish produce hundreds of young several times a year, which statement below is true?
.Angelfish have a k-strategy reproductive pattern.
Angelfish have an r-strategy reproductive pattern
Angelfish probably have a low mortality rate.
Angelfish provide a lot of care for their young
Which strategy is considered as an adaptation for living in an environment where fluctuation in biotic or abiotic factors occur?
tors occur?
k-strategy reproductive pattern
a low mortality rate.
r-strategy reproductive pattern
high mortality rate
Which strategy involves a larger organism that has a long life span, produces few offspring, and whose population reaches equilibrium at the carrying capacity?
k-strategy reproductive pattern
a low mortality rate.
r-strategy reproductive pattern
high mortality rate
Which organism is the best example of a k-strategist?
.wolf
grasshopper
rabbit
whale
coming into the population from somewhere else_____________
emigration
immigration
population growth rate
population density
The average number of individuals in a population per unit of area or volume_____________
emigration
immigration
population growth rate
population density
how fast a population changes in size over time_____________
emigration
immigration
population growth rate
population density
leaving the population for another area_____________
emigration
immigration
population growth rate
population density
The largest population size that can be supported in an area without harming the environment_____________
carrying capacity
exponential growth
K-selected
r-selected
what is the type of dispersion?
uniform
clumped
random
all of the above
what is the type of dispersion?
uniform
clumped
random
all of the above
The ecologist finds that over a 1000m2 plot of tundra, lemmings tend to concentrate in clumps in drier areas. What is the term for this pattern of spacing?
density
dispersion
logistic spacing
spatial distribution
Use the graph below of the growth of the human population through history to answer questions
What is the projected population of developed
countries by 2050?
1.5 billion
7.3 billion
9 billion
10.5 billion
Use the graph below of the growth of the human population through history to answer questions
What is the approximate population difference between developing countries that have low fertility rates and developing countries that have high fertility rates in 2050?
1.5 billion
1.7 billion
3.2 billion
9 billion
The study of human population size, density, distribution, movement, birth rate and death rate is called:___________
age structure
demographic transition
Emigration
Demography
change in a population from high birth and death rates to low birth and death rates called:___________
Population Growth Rates
demographic transition
change season
Demography
Which is a primary reason for the decline in the percent growth of the human population after 1962
decreased agriculture
famine and wars
setbacks in medicine
voluntary population control
The number of males and females in each of three age groups
is called_________________
Age structure
.Age range
Age statistic
Age frame
In the age structure of the human population, the age group that has the youngest population is the ……..
In the age structure of the human population, the age group that has the eldest population is the …….
In the age structure of the human population, the age group that has the working population is the ……..
Use the graph below to answer the question: Which of the following is a characteristic of the age
structure shown below?
Negative Growth
Slow Growth
Rapid Growth
Zero population growth
The age-sex structure of a quickly growing population would probably have______________
a wide base, showing many young individuals
a wide top, showing many older individuals
a wide middle area, showing many middle-aged individuals
all of the above
Humans will reach zero population
growth when:
Carrying capacity is reached.
humans stop giving birth
world population stops growing
birthrate equals death rate
What will happen to the human
population when the birthrate equals the death rate?
CDC
HPG
PGR
ZPG
What is the type of growth in human population?
Negative growth
Rapid growth
Slow growth
All of the above
What is the type of growth in human population?
Negative growth
Rapid growth
Slow growth
All of the above
Based on the information in the graph, infer which statement accurately represents the information provided.
India has very little land for farming.
Germany is smaller per acre than
the United States.
More land is used to support an
individual in the United States.
A person in Indonesia requires more land than a person in Brazil.
Based on the information in the graph, infer which statement accurately represents the information provided.
Germany has very little land for farming
India is smaller per acre than the United States.
More land is used to support an individual in India.
A person in Indonesia requires less land than a person in Brazil.
Japan had a birthrate of eight and a death rate of nine in 2008.
What was the PGR?
0.01 percent
−1 percent
1 percent
− 0.1 percent
Georgia, a country in western Asia, had a birthrate of 11 and a
death rate of 10 in 2008. What was the PGR of Georgia in that
year?
1 percent
1.1 percent
11 percent
0.11 percent
Which of the following is a density-independent factor?
an intestinal parasite
severe overcrowding
a fatal virus
a severe drought
What is the dispersion pattern of
herding animals, birds that flock
together, and fish that form schools?
uniform
random
unpredictable
clumped
Georgia, a country in western Asia, had a birthrate of 11 and a death
rate of 10 in 2008. What was the
PGR of Georgia in that year?
%1
%1.1
%11.0
%11
Which of the following is an example
of uniform dispersal?
one large buffalo herd
random elephant groups
school of silverside fish
territorial jaguar pairs
Which is a density-independent factor for a flock of Canada geese on a large lake?
Intestinal worms
Infectious virus
Dwindling food supply
Unusually cold winter
What do the results from the study on the wolf–moose
populations show?
The wolf population was not affected by the moose population
The rise and fall of both populations were dependent on each other
The moose population was only affected by abiotic factors
The rise and fall of both populations were independent of each other
Use the graph below to answer the following question.
What year was the moose population at its lowest?
1982
1970
1990
1997
An ecologist estimates a population density of 2.3 lemmings per square meter of tundra. What would be the approximate number of lemmings over 1000 square meters of tundra?
2300
0.23
23
230
Which of the following organisms follows a k-strategy for reproduction?
A
B
C
D
Which of the following organisms does not follow a r-strategy for reproduction?
A
B
C
D
In 1GG4, house finches in backyard gardens suffered from a severe eye disease. Volunteers tracked infected finches and the total population. The graph illustrates the size of the finch population over three years.
In which year did the population size of house finches decrease rapidly?
1995
1994
1996
all above
In 1GG4, house finches in backyard gardens suffered from a severe eye disease. Volunteers tracked infected finches and the total population. The graph illustrates the size of the finch population over three years.
What is the likely reason the house finch population did not change much in 1995 and 1996?
The house finches developed immunity to the parasite
The parasite was unable to spread as easily in smaller populations.
Increased competition among house finches for resources.
A decline in the availability of suitable nesting sites.
The graph below represents the size of a panda population over time. A portion of the habitat where the panda population lives is destroyed by a deforestation event. Which of the following graphs represents how the size of the panda population would likely be affected over time by this environmental change?
Why is the life span of this finch with an eye disease most likely reduced?
.The bird cannot mate.
The bird cannot find food or water.
The bird spreads the disease to others.
The bird cannot survive a temperature change
Which is a possible reason for the relatively quick spread of the shown disease?
an abiotic factor
a decreased food supply
increased population density
increased immunity
