Each of the following is an abiotic
factor in the environment EXCEPT
plant life
soil type
Rainfall
temperature
71%
10%
te
m
pe
ra
tu
in
fa
l
re
l
10%
Ra
yp
e
lt
so
i
nt
lif
e
10%
pl
a
1.
2.
3.
4.
Which is a biotic factor that affects the
size of a population in a specific
ecosystem?
81%
ox
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e
of
n
tio
co
n
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ft
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r
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te
ag
e
10%
..
10%
0%
av
er
1. average temperature of
the ecosystem
2. type of soil in the
ecosystem
3. number and kinds of
predators in the
ecosystem
4. concentration of oxygen
in the ecosystem
During a long period when there is no rainfall, a
mountain lion may temporarily leave its usual
hunting territory to drink from a farm pond. This
behavior is probably due to
71%
1. its need to find different
foods to eat
2. the change in an abiotic
factor in its environment
3. its need to find a new
habitat
4. the change in a biotic
factor in its environment
19%
fa
...
...
io
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ew
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ab
an
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its
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ot
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its
3%
an
fin
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en
...
6%
An interaction in which one organism
captures and feeds on another organism is
called
Competition
Symbiosis
Mutualism
Predation
71%
io
n
da
t
Pr
e
M
ut
ua
l
ism
sis
bi
o
Sy
m
on
iti
16%
10%
3%
Co
m
pe
t
1.
2.
3.
4.
A symbiosis in which both species
benefit is
Commensalism
Mutualism
Competition
Parasitism
94%
3%
sm
0%
as
iti
Pa
r
Co
m
pe
t
iti
on
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ut
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l
M
m
en
sa
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m
3%
Co
m
1.
2.
3.
4.
The symbiotic relationship between a
flower and the insect that feeds on its
nectar is an example of
1. mutualism because the flower
provides the insect with food,
and the insect pollinates the
flower
2. parasitism because the insect
lives off the nectar from the
flower
3. commensalism because the
insect does not harm the flower
and the flower does not benefit
from the relationship
4. predation because the insect
feeds on the flower
68%
13%
19%
th
e
au
se
be
c
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th
e
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i..
.
...
0%
logistic growth
growth density
exponential growth
multiple growth
71%
19%
10%
th
w
th
gr
o
ro
w
m
ul
ti
pl
e
lg
nt
ia
ex
po
ne
wt
h
gr
o
st
ic
gr
o
w
th
de
ns
ity
0%
lo
gi
1.
2.
3.
4.
When individuals in a population
reproduce at a constant rate, it is
called
As resources in a population become
less available, population growth
1. declines rapidly
2. increases slowly
3. reaches carrying
capacity
4. enters a phase of
exponential growth
74%
19%
ex
po
n
ha
se
of
gc
ap
ap
ca
r
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rs
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a
...
ac
it y
3%
ry
in
ea
se
in
cr
de
c
lin
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ra
ss
lo
pi
w
dl
y
ly
3%
In a logistic growth curve, exponential
growth is the phase in which the
population
1. reaches carrying
capacity
2. grows quickly and
few animals are
dying
3. growth begins to
slow down
4. growth stops
45%
26%
23%
wt
h
gr
o
st
op
s
gr
o
wt
h
w
st
o
be
gin
ck
l
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gr
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slo
fe
w
ya
nd
gc
ap
ry
in
ca
r
es
ch
re
a
...
. ..
ac
it y
6%
A biotic or an abiotic resource in the
environment that causes population
size to decrease is a
carrying capacity
limiting nutrient
limiting factor
growth factor
61%
16%
16%
gr
o
wt
h
fa
c
to
r
r
gf
ac
to
iti
n
lim
iti
n
lim
ry
in
gc
ap
a
cit
gn
ut
r ie
nt
y
6%
ca
r
1.
2.
3.
4.
All of the following are limiting factors
EXCEPT
Immigration
Competition
Predation
Human disturbances
39%
26% 26%
Hu
m
an
di
Pr
e
st
ur
b
da
t
an
c
es
io
n
on
iti
pe
t
Co
m
m
igr
at
io
n
10%
Im
1.
2.
3.
4.
If a population grows larger than the
carrying capacity of the environment,
the
death rate may rise
birthrate may rise
death rate must fall
birthrate must fall
42%
42%
10%
fa
l
us
t
m
at
e
bi
rth
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a
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ris
m
ay
ay
m
ra
te
h
fa
l
e
ris
e
6%
de
at
1.
2.
3.
4.
Which of the following is characteristic
of parasitism?
1. One organism kills and
consumes another.
2. Two organisms live
together and neither is
harmed
3. Two organisms feed side by
side from the same food.
4. One organism lives in or on
another and benefits.
61%
26%
10%
or
..
.
liv
es
i
n
sid
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On
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ism
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ee
to
ge
.
.. .
d
an
lls
ki
sm
an
i
or
g
On
e
3%
An ecosystem is made up of:
1. living things only
2. Physical environment
only
3. living things and the
physical environment
4. living things and
decaying matter
74%
de
c
ph
ay
i. .
y..
.
10%
gt
hi
ng
s
an
d
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e
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in
liv
in
gt
hi
ng
s
an
d
ro
nm
en
vi
Ph
ys
ica
l
liv
in
gt
hi
ng
s
en
to
nl
y
on
ly
6% 10%
When a rabbit population in a meadow
cannot grow any larger, it has reached the
Climax community
Carrying capacity
Limiting factor
Minimum size
74%
16%
10%
s iz
e
M
in
im
um
o.
..
fa
ct
ng
it i
Lim
ng
ry
i
Ca
r
co
m
m
ca
p
un
i..
ac
. ..
.
0%
Cl
im
ax
1.
2.
3.
4.
A population of rabbits is at its
carrying capacity when the population
Reproduces
becomes extinct
stops growing
can’t survive
52%
39%
6%
e
viv
’t
su
r
gr
o
w
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s
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c..
.
3%
es
du
ce
s
pr
o
Re
1.
2.
3.
4.
An unusually cold winter causes the squirrel
population to decrease. This is an example of
temperature as a
1. carrying capacity
87%
2. Limiting factor
3. Climax community
4. Pattern in space
6%
sp
a.
..
in
n
te
r
Pa
t
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m
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un
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..
fa
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it i
Lim
Cl
im
ax
c..
.
ap
a
gc
ry
in
ca
r
.
0%
6%
Many individuals of the same species
living together in a defined area form a/an
Community
Ecosystem
Population
Biome
39%
32%
23%
e
om
Bi
n
at
io
Po
pu
l
sy
st
em
Ec
o
un
i
ty
6%
Co
m
m
1.
2.
3.
4.
Which of the following is characteristic
of parasitism?
1. One organism kills and
consumes another.
2. Two organisms live
together and neither is
harmed
3. One organism lives in or
on another and benefits.
4. Two organisms nourish
each other; both benefit.
84%
10%
..
an
ism
sm
an
i
Tw
o
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g
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g
On
e
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ism
or
g
o
Tw
s.
l..
.
..
3%
s.
k.
..
sm
an
i
or
g
On
e
3%
Which list of terms is in the correct
order, from simplest to most complex?
1. organism, community,
population, ecosystem, biome
2. organism, population,
community, biome, ecosystem
3. organism, population,
community, ecosystem, biome
4. organism, community,
ecosystem, population, biome
42%
35%
,c
,p
om
op
u.
..
m
. ..
10%
or
g
an
i
sm
sm
or
g
an
i
sm
an
i
or
g
or
g
an
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sm
,c
,p
om
op
u.
..
m
. ..
13%
All the leopard frogs in a pond make
up the pond’s leopard frog:
Population
Niche
Habitat
Community
70%
10%
7%
Co
m
m
un
i
ty
t
Ha
bi
ta
Ni
ch
e
at
io
n
13%
Po
pu
l
1.
2.
3.
4.
Biotic factors in an ecosystem may
include:
1. bacteria, soil, and
water
2. plants, animals, and
bacteria
3. temperature, water,
and soil
4. animals, fungi, and
temperature
87%
7%
s,
fu
ng
i
.. .
...
3%
an
im
al
re
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ra
tu
te
m
pe
nt
s,
pl
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an
im
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l..
.
..
3%
Certain bacteria living in a human's large intestine help
to produce vitamin K. This relationship is an example of
Parasitism
Mutualism
Commensalism
Predation
47%
40%
Co
m
io
n
da
t
Pr
e
m
en
sa
lis
ism
ut
ua
l
M
as
iti
m
7%
sm
7%
Pa
r
1.
2.
3.
4.
An herbivore population may
1. oscillate up and down as its
major predator increases and
decreases in number.
2. exceed its carrying capacity if its
major predator is removed.
3. exceed its carrying capacity
when it is introduced to a new 10%
community.
4. all of the above are true.
13%
o.
..
...
ab
all
of
th
e
it s
ed
ex
ce
ex
ce
ed
it s
ca
r
...
0%
ca
r
a.
..
p
eu
at
os
cil
l
77%
Which of the following IS NOT an
example of mutualism?
1. a flowering plant and its
pollinator species
2. a host species and its
parasite.
3. root fungi (mycorrhizae)
and tree species
4. nitrogen-fixing bacteria
and their host species
79%
14%
xin
en
-fi
ni
tro
g
m
i(
tf
un
g
os
t
ah
ro
o
sp
e
c ie
y.
..
l..
.
gp
er
in
w
af
lo
...
3%
s..
.
3%