Name _____________________ Date ______________ Period _______ # ______
Ecology Triple-Entry Vocabulary for Chapter 18-20 – Bio
http://quizlet.com/40167138/ch-18-20-ecology-vocabulary-flash-cards/
Word/Definition in Context
Biosphere- the part of the earth
where life exists (includes all
living organisms
Ecology- the study of the interactions between organisms and
the other living and nonliving
components of their environment
Ecosystem- a community of
organisms and their abiotic
environment
Community- a group of various
species that live in the same
habitat and interact with each
other
Population- a group of
organisms of the same species
that live in a specific geographical
area and interbreed
Habitat- the place where an
organism usually lives
Biotic factor- an environmental
factor that is associated with or
results from the activities of living
organisms
Abiotic factor- an environmental
factor that is not associated with
the activities of living organisms
Niche- the unique position
occupied by a species
Producer- an organism that can
make organic molecules from
inorganic molecules
Consumer- an organism that
eats other organisms or organic
matter
Definition in My Own Words
Picture, Memory Aid, Phrase
Earth
globe
“study of”
relationship
organisms
area
interacting
environment
same
interbreeding
natural environment
inhabited
living
has cells
Nonliving (without life)
rocks
job
role
autotroph
photosynthetic
plants
heterotroph
animals
Herbivore- an organism that
eats only plants
plants
vegetation
Carnivore- an organism that eats
meat
flesh
animals
Omnivore- an organism that eats
a variety of other organisms
(plants and animals)
Decomposer- an organism that
feeds by breaking down organic
matter from dead organisms
both
human
bacteria
fungi
soil/dirt
Name _____________________ Date ______________ Period _______ # ______
Word in Context
Trophic level- an organism’s
Definition in My Own Words
Picture, Memory Aid, Phrase
“feeding level”
relative position of energy transfer
in a food chain or food pyramid
Food web- a diagram that shows
the feeding relationships among
organisms in an ecosystem
Food chain- the pathway of
energy transfer through various
stages as a result of the feeding
patterns of a series of organisms
Natality- the number of births
that occur in a period of time in a
given area
Mortality- the number of deaths
occurring in a period of time
Immigration- the movement of
an individual or group into an area
Emigration- the movement of an
individual or group out of an area
Carrying capacity- the largest
population that an environment
can support at any given time
Population density- the number
of individuals of the same species
that live in a given unit of area
Dispersion- the pattern of
distribution of organisms in a
population
Predator- an animal that hunts,
kills, and eats other animals
Prey- an animal that is hunted,
killed, and eaten by a predator
Symbiosis- a relationship in
which two different organisms live
in close association with each
other
Parasitism- a relationship
between two species in which one
species benefits from the host
while the host is harmed
Commensalism- a relationship
between two organisms in which
one organism benefits and the
other is unaffected
Mutualism- a relationship
between two species in which
both species benefit
Ecological succession- a
gradual process of change and
replacement in a community
arrow
connected
trophic level
linear
birth
increase
death
decrease
enter/entering
increase
exit/exiting
decrease
maximum
size
measurement
available/availability
clumped
even
“does the eating”
fox
“gets eaten”
rabbit
close relationship
two organisms together
one helped, one harmed
one benefits, other unaffected
both benefit
series of events
community