WorksheetsPopulation Ecology Review
Total questions: 58
Worksheet time: 2hrs 51mins
True or False: Limiting factors can be population dependent and population independent.
True
False
Direct Observation
counting a sample of a small group out of the larger group to estimate
counting each member of the species to find the exact number
estimating the number of organisms by observing signs of organisms
scientists capture and count each organism and mark them with a dot of paint; when they come back they count the marked organisms and unmarked ones to see if the population grew
Indirect Observation
scientists capture and count each organism and mark them with a dot of paint; when they come back they count the marked organisms and unmarked ones to see if the population grew
counting a sample of a small group out of the larger group to estimate
counting each member of the species to find the exact number
estimating the number of organisms by observing signs of organisms
Sampling
counting a sample of a small group out of the larger group to estimate
estimating the number of organisms by observing signs of organisms
scientists capture and count each organism and mark them with a dot of paint; when they come back they count the marked organisms and unmarked ones to see if the population grew
counting each member of the species to find the exact number
Mark and Recapture
estimating the number of organisms by observing signs of organisms
counting each member of the species to find the exact number
scientists capture and count each organism and mark them with a dot of paint; when they come back they count the marked organisms and unmarked ones to see if the population grew
counting a sample of a small group out of the larger group to estimate
What is carrying capacity?
the maximum size of the species that humans can support
the minimum size of the species that the environment can support
the maximum size of the species that the environment can support
the minimum size of the species that can support themselves
Death Rate
moving into a population
number of deaths in a population in a certain amount of time
an environmental factor that causes a population to decrease
approximation of a number, based on reasonable assumptions
Limiting Factor
number of births in a population in a certain amount of time
an environmental factor that causes a population to decrease
approximation of a number, based on reasonable assumptions
number of individuals in an area of specific size
Sand
Abiotic (non-living)
Biotic (living)
Lynx
Biotic (living)
Abiotic (non-living)
Sunlight
Biotic (living)
Abiotic (non-living)
water
biotic (livng)
Abiotic (non-living)
Mushroom
biotic (livng)
Abiotic (non-living)
Which is the keystone species for the jungle ecosystem?
What is the definition of an ecosystem?
A group of animals of the same species living in the same place.
All the plants and animals living in the same place.
All organisms living in the same place and the abiotic factors that affect them.
In the mid 1900's, the wolves of Yellowstone were deeply affected by humans and their population significantly decreased-- making them endangered, and eventually removing them completely from the Yellowstone ecosystem. The removal of wolves, the top predator, caused what to happen to the biodiversity within Yellowstone?
A trophic cascade affected the entire food web in Yellowstone, causing some organisms to experience decreases, and others to grow rapidly.
Biodiversity increased when the wolves disappeared and more species were able to flourish without the wolves.
A trophic cascade irreversibly ruined the ecosystem in Yellowstone--destroying biodiversity forever.
The biodiversity of the park was not affected when the wolves were removed.
The trophic cascade in Yellowstone had many causes and affects. Which answer below most accurately shows the changes in the ecosystem due to the reintroduction of wolves?
wolves reintroduced-> deer population increased -> tree and vegetation cover decreased
wolves reintroduced-> beaver population decreased -> tree and vegetation cover increased
wolves reintroduced-> deer population decreased -> tree and vegetation cover increased -> beaver population increased
wolves reintroduced-> deer population decreased -> beaver population decreased -> songbird population increased
SELECT ALL THAT APPLY: Which of the following must be true in order for organisms to be considered the same species?
They must be able to mate
They must be able to produce viable offspring
They must have structural similaries
They must have the same bone structure
What is an ecosystem?
A community of non-interacting organisms and their physical environment.
A biological community of interacting organisms and their chemical environment.
A biological community of interacting organisms and their physical environment.
A community of non-interacting organisms and their chemical environment.
An example of a population is
all trees in a forest
all maple trees in a forest
all plants in a forest
all animals in a forest
A group of different species that live together and interact in an environment are called a/an ________.
community
habitat
population
ecosystem
What is the largest level of ecological organization that can be observed in the image?
Species
Population
Community
Ecosystem
how many organisms per unit area
population distribution
population density
ecosystem
logistical growth
A small island nation is tracking its total population. It started with exactly 100 people. During the year, 10 people immigrated, while 20 emigrated. The birth rate was 15, and the death rate was 5. What is the new population of the country?
115
110
90
No change; the population is still 100.
Final Population Size?
These organisms occupy stable environments, are larger in size and have longer life expectancies. They produce, during their life spans, fewer offspring, but place a greater investment in each.
k-strategist
r-strategist
m-strategist
s-strategist
Which curve best describes an organism that invests a lot of energy in parenting?
