Worksheets21-22 Population Dynamics Unit 3
Total questions: 37
Worksheet time: 19mins
Which is NOT one of the three types of population dispersion?
clumped
uniform
random
tight
A school of fish would be an example of what type of population dispersion?
clumped
tight
uniform
random
The graph shows _________________ growth
logistic
exponential
S shaped
I shaped
A population experiencing _______________ growth can consume resources in an ecosystem and put other populations at risk
logistic
S- shaped
I- shaped
exponential
The graph shows a population experiencing ____________________________________.
J - shaped growth
exponential growth
density independent limiting factors
carrying capacity
A population that grows until it reaches its carrying capacity
J- shaped population growth
s- shaped population growth
M- shaped population growth
I- shaped population growth
What is the best example of an ecologist studying population density
The number of snakes per kilometer 2
The number of snakes on the planet
How many snakes are in a field
What determines the carrying capacity for a particular species at a particular time?
color of the individual species
time of day
supply of limiting factors ( resources)
how wealth they are
The largest population that an environment can support is called it's
birth rate
carrying capacity
death rate
limiting factors
What type of growth describes a population growing without limit to its size
J
S
M
I
What will happen to the carrying capacity of squirrels if a section of woods is cut down for a shopping center
the squirrel population will increase
the squirrel population will remain the same
the carrying capacity will decrease and the squirrel population will decrease.
Which of the following would most likely cause a change in carrying capacity
a major natural disaster
carrying capacity can never be changed
A new month
carrying capacity does not affect a population
Why would a natural predator such as a wolf to a deer population be a good thing?
wolf predation will not affect the deer population
wolves do not hunt deer
wolf predation leads to population of healthy deer as predation prevents overpopulation and weeds out the weak
wolf predation leads to an increase in tourism
What are population control factors whose effects increase as the size of the population increases
abiotic factors
density dependent factors
dispersion
density independent factors
Ticks passing Lyme disease on to black bears
density dependent limiting factor
density independent limiting factor
Hurricane killing a population of sheep
density dependent limiting factor
density independent limiting factor
A mold that kills 25,000 fox ferns
density dependent limiting factor
density independent limiting factor
Construction crews take down a stand of maple trees
density dependent limiting factor
density independent limiting factor
Bears not having enough fish
Density dependent limiting factor
density independent limiting factor
Increase predation of rabbits
density dependent limiting factor
density independent limiting factor
The new invasive species, the Joro spider, out competing native spiders for food
density dependent limiting factor
density independent limiting factor
What method would ecologist use to study population size of an organism that moves?
Random Sampling
Mark and recapture
What method of estimating the size of a population involves multiplying the number of organisms in a small area to find the number of organisms in a larger area?
Mark and recapture
random sampling
exponential counting
frequency counting
The movement of individuals into an area?
emigration
immigration
carrying capacity
demography
Which is NOT factor that affects the size of a population
immigration
clumped
births
deaths
Which of the following would decrease the size of a population of skunks
increase in births
decrease in deaths
increase in deaths
more skunks moving into the area
How will increasing the number of times you recapture and count a population affect the accuracy of the estimated population size?
more recaptures will lead to death within the population
there will be no change
the more recaptures the more accurate the estimate will be
this method is rarely used so it really doesn't matter
When analyzing a predator prey graph showing the relationship of deer and wolf population. What would most likely happen to the wolf population if the deer population decreased after a forest fire
there would be no affect to the wolf population
the wolf population would increase
the wolf population would decrease
the wolf population would increase rapidly
If a graph showed a population continuing to rise, not fluctuating around carrying capacity as seen in this graph, what concept would be illustrated
behavior change
environmental stability
genetic variation
over population
Which of the following could cause a decrease in carrying capacity of a population in a particular ecosystem?
birthrate and death rate being equal
a decrease in the number of predators and an increase in the number of available resources
a decrease in the availability of minerals, water and shelter
the entire population migrated to a new ecosystem containing more food
Which of the following could increase the growth of a population?
increase predation by herbivores
increase availability of food
increased number of decomposers
increased competition among carnivores
Which type of survivorship curve is the lifespan not affected by age?
Type I
Type II
Type III
none of these
Which survivorship curve contains organisms with short lifespans
Type !
Type II
Type III
none of these
Which type of survivorship curve contains organisms with long lifespans
Type I
Type II
Type III
A ___________________ is an organism that requires a very specific set of biotic and abiotic conditions and has a very narrow niche
specialist
generalist
consumer
herbivore
A koala, Native to Australia, koalas are herbivorous marsupials that feed only on the leaves of the eucalyptus tree.
is a generalist
is a specialist
is neither
is adaptive
A crow is adaptive to many environments and and can eat a wide variety of food. A crow is an example of ...
a specialist
a generalist
a herbivore
a decomposer
