Ecology Review
Which of the following is NOT a biotic
factor in a prairie dog ecosystem?
A. Grass and other plants that the prairie dog
eats
B. Hawks, ferrets and other animals that hunt
the prairie dog
C. The soil that provides the prairie dog with a
home
D. Worms, fungi and bacteria that live in the soil
What is the correct order of the levels
of organization of living things?
A. organism – population – community -- ecosystem
B. ecosystem – population – community -- habitat
C. organism – population – biotic factor - ecosystem
D. organism – succession – community -- ecosystem
A prairie dog, a hawk and a badger are
all members of the same
A. niche
B. community
C. species
D. population
Which of the following is NOT an
example of limiting factors for
populations?
A. time
B. weather
C. space
D. food
Wolves are predators of moose on Isle Royale. If
the moose population rises, what do you predict
will happen to the wolf population?
A. The wolf population will increase until the moose
population begins to decline due to too many predators
B. The wolf population will decrease because they will have
to compete with a larger moose population
C. The wolf population will stay the same because they are
in a mutualistic relationship with the moose
D. The wolf will go extinct due to overhunting
Although three different bird species all live in the
same tree in an area, competition between the birds
rarely occurs. The most likely explanation for this lack
of competition is that these birds
A. occupy different niches
B. have a limited supply of food
C. eat the same food
D. live in the same part of the tree
The amount of energy transferred
from one level to the next in a food
web is
A. 5%
B. 10%
C. 50%
D. 90%
The process of evaporation,
condensation and precipitation make
up the
A. food web
B. carbon and oxygen cycles
C. water cycle
D. nitrogen cycle
“Free” nitrogen is changed into a
usable form of nitrogen in the process
called
A. primary succession
B. nitrogen fixation
C. condensation
D. legumes
The type of biome that exists in an
area is determined by its
A. people
B. climate conditions
C. food webs
D. invasive species
Matching
Population ecology habitat carrying capacity
energy pyramid symbiosis ecosystem invasive species
Limiting factors extinction biodiversity
The study of how living
things interact with each
other and with their
environment
ecology
Matching
Population ecology habitat carrying capacity
energy pyramid symbiosis ecosystem invasive species
Limiting factors extinction biodiversity
All the members of one
species in a particular
area
population
Matching
Population ecology habitat carrying capacity
energy pyramid symbiosis ecosystem invasive species
Limiting factors extinction biodiversity
The largest population
that an area can support
carrying
capacity
Matching
Population ecology habitat carrying capacity
energy pyramid symbiosis ecosystem invasive species
Limiting factors extinction biodiversity
An environment that
provides the things the
organism needs to live,
grow and reproduce
habitat
Matching
Population ecology habitat carrying capacity
energy pyramid symbiosis ecosystem invasive species
Limiting factors extinction biodiversity
A diagram that shows the
amount of energy that
moves from one feeding
level to another in a food
web
Energy
pyramid
Matching
Population ecology habitat carrying capacity
energy pyramid symbiosis ecosystem invasive species
Limiting factors extinction biodiversity
A species that is not
native to an ecosystem
Invasive
species
Matching
Population ecology habitat carrying capacity
energy pyramid symbiosis ecosystem invasive species
Limiting factors extinction biodiversity
A close relationship
between two species that
benefits at least one of
the species
symbiosis
Matching
Population ecology habitat carrying capacity
energy pyramid symbiosis ecosystem invasive species
Limiting factors extinction biodiversity
A community of
organisms that live in a
particular area along with
their non-living
surroundings
ecosystem
Matching
Population ecology habitat carrying capacity
energy pyramid symbiosis ecosystem invasive species
Limiting factors extinction biodiversity
The number of different
species in a an area
biodiversity
Matching
Population ecology habitat carrying capacity
energy pyramid symbiosis ecosystem invasive species
extinction biodiversity
The disappearance of all
members of a species
from Earth
extinction
Interactions
Predation competition
parasitism
mutualism
commensalism
A lion hunts, attacks, kills
and eats a zebra
predation
Interactions
Predation competition
parasitism
mutualism
commensalism
The seeds of purple
loosestrife, an invasive
species, migrate to an
island and take the space
of native plants
competition
Interactions
Predation competition
parasitism
mutualism
commensalism
Wrasses, a reef fish, clean
the mouth and gills of the
moray eel to gain its meal
mutualism
Interactions
Predation competition
parasitism
mutualism
commensalism
Barnacles live on a
whale to have a place
to live, but they do
not take anything
from the whale and
the whale is not
harmed
commensalism
Interactions
Predation competition
parasitism
mutualism
commensalism
In the rainforest, the
strangle fig tree
grows around
another tree as it
absorbs the tree’s
nutrients and
eventually kills the
tree
parasitism
A rocky island appears as
ocean waters recede.
What type of species
would probably appear
first on the bare rocks?
Pioneer species, like mosses
and lichens, would be the first
to appear
A rocky island appears as
ocean waters recede.
What type of succession
does this demonstrate?
Why?
Primary succession is demonstrated
because the area is starting with
bare rock
An old warehouse was torn down. Small weeds and
grasses grew on the abandoned land. Over the few years,
bushes and tree seedlings began to grow. What will
eventually happen to this land over a long period of time?
A forest will eventually grow.
An old warehouse was torn down. Small weeds and
grasses grew on the abandoned land. Over the few years,
bushes and tree seedlings began to grow. What type of
succession does this demonstrate? Why?
Secondary succession is
demonstrated because soil is
present at the beginning.
Define a food web
A food web is overlapping food
chains in an ecosystem
Describe a food chain in this food web.
Why do all food chains
start with a producer?
Producers can make their own
food through photosynthesis
Mushrooms are decomposers.
What is the role of
mushrooms in this web?
The populations of squirrel,
What would happen if all shrew, snake and bird would
the hawks died?
increase.