Take Practice Test:
On a separate sheet of paper write
down numbers 1-40.
1.
2.
3. through 40.
Indicate which ones you got correct
with + or - . Use the grade
breakdown to check your score.
This is the Benchmark Grade
Breakdown
Grade
A
B
C
D
F
# Correct
38-40
34-37
28-33
24-27
0 -23
Points Earned
114-120
102-111
84-99
72-81
0 -69
6A & 6B
The Green
Questions are testlike questions and
Gold Questions are
the most missed
test-like questions.
1. 6B The diagram below represents
a tree containing three different
species of warbler. A,B and C. Each
species occupies a different niche. A
fourth species,D, which has the same
environmental requirements as
species B, enters the tree at point X.
Members of species B will most likely
X
A
D
B
C
A
X
B&D
C
E
1. Continued
A. Live in harmony with species D
B. Move to a different level with
species A or species C.
C. Stay at that level but change their
diet.
D. Compete with species D.
2. 6B A food web is shown in
the diagram below.
Hawk
Rabbit
Field Mouse
Frog
Cricket
Grass
Which statement best describes a direct
result of a decrease in the rabbit
population due to disease?
A. The hawk population will increase.
B. The grass population will increase.
C. The cricket population will decrease.
D. The frog population will be eliminated.
3. 6B Which factor most
determines the type of plants
that grow in an area?
A. Climate of the area.
B.The number of secondary
consumers.
C. Depth of the pond in the
area.
D. Percentage of nitrogen in
the air.
4. 6B Climate is a global
factor that produces
A. Earth’s unique ocean and
atmosphere.
B. The shape and elevation of
landmasses.
C. A wide range of environmental
conditions that shape communities.
D. Solar energy within the
atmosphere.
5. 6B Which type of
biome occupies the
largest area of Earth?
A.Temperate Decidous Forest
B.Tropical Rain Forest
C. Grasslands
D. Marine
6. 6B Some scientist
think that global
warming is
A. a natural variation in
climate.
B. a result of human activities.
C. melting the polar ice caps.
D. all of the above
7. 6A When scientists
measure the
biodiversity of a
habitat, they considerA. The diversity in plants.
B. The kind of producers &
consumers.
C. The variation in animals.
D. All of the organisms.
8. 6B An increase in the
Earth’s average
temperature from the build
up of carbon dioxide and
other gases in the
atmosphere is called?
A. the greenhouse effect
B. ozone depletion
C. global warming
D. particulate dispersion.
9. 6B Biomes
A. Tropical Rain Forest
B. Temperate Deciduous Forest
C. Taiga
E. Grassland
D. Tundra
F. Desert
Which biome is characterized by
moderate rainfall, cold winters, and
the presence of foxes and deer?
A. C
C. D
B. B
D. E
10. 6B Biomes
A. Tropical Rain Forest
B. Temperate Deciduous Forest
C. Taiga
E. Grassland
D. Tundra
F. Desert
Which biome is characterized by
low rainfall, cold nights, hot days
and animals that are able to
conserve water?
A. C
C. D
B. B
D. F
11. 6B The sum total
of the geneticallybased variety of living
organisms in a
biosphere is called----?
A. species diversity
B. biodiversity
C. sustainable use
D. conservation biology
12. 6B All of the
following are threats to
biodiversity EXCEPT for
A. Species preservation
B. Invasive species
C. Habitat Fragmentation
D. Biological magnification
of toxic compounds.
13. 6B An endangered
species is
A. A diseased animal
B. A dangered predator
C. A group of organisms
near extinction.
D. All organisms at the top
of the food chain.
14. 6B Which phrase best
describes an ecosystem?
A. All the organisms in a
specific location.
B. All the nonliving materials
in a specific location.
C. Some non-living materials
and living organism in a
specific location.
15. 6B Biodiversity is
valuable in the biosphere
because it
A. is the biological life-support
system of our planet.
B. gives us interesting things
to look at.
C. tells us about many other
species.
6D, 6E & 6F
16. 6F Organisms in
each trophic level of a
food chain pass onA. Less energy than they
received
B. More energy than they
received
C. The same amount of
energy as they received
D. No energy
17. 6F Each level of the
pyramid is smaller than the
level below it because some
of the matter is converted
into.
A.Energy lost due to movement
B.
.5
waste that is released
C.
5
energy lost due 50
to heat
D. all of the above 500
18. 6D As water cycles
through an ecosystem,
which process returns it to
the atmosphere?
A. hydrolysis
B. cyclosis
C. condensation
D. transpiration
19. An organism that uses
energy to produce its own
food supply from inorganic
compounds is called a(an)
A. Hererotroph
B. Consumer
C. Detrivore
D. Autotroph
20. A decrease in which
group would create
instability in an
ecosystem first?
A. Producer
B. Primary Consumer
C. Secondary Consumer
D. Decomposer
21. A student measured some
abiotic factors present in an
aquarium in a biology lab.
Which data did the student
most likely record?
A.The weight & number of fish
B. The number of snails & plants
C. The size & number of fish
D. The temp and O2 levels
22. 6f The diagram below shows
a food pyramid, Which level of
the food pyramid contains
consumers with the least
biomass?
A. Snakes
B. Mice
C. Plants
D. None of the above
23. The action of a
decomposer in the
nitrogen cycle most
directly aids in the
A. Synthesis of proteins from
nitrates
B. Removal of nitrogen compounds
from the atmosphere
C. Restoration of nitrogen
compounds to the soil
D. Fixation of the atmospheric nitrogen
24. The maintenance of a
self-sustaining ecosystem
requires a
A. Soil that is acidic
B. Contant temperature
C. Cycling of materials between
organisms and their environment
D. Greater number of herbivores
than producers
25. The diagram below shows an
example of interdependence
among land organisms. During
the day, plants mostly give off
substance A , as shown by the
arrows.What are the substances
represented by A and B?
A. A-O2 & B-CO2
B A
B. A-O2 & B-Sugars
C. A-N & B-CO2
D. A-CO2 & B-O2
26.6E An organism that
cannot make its own food is
called a (an)
A. heterotroph
B. chemotroph
C. autotroph
D. consumer
E. both A & D
27. 6f Only 10 percent of the energy
stored in an organism can be
passed on to the next trophic level.
Of the remaining energy, some is
used for the organism’s life
processes, and the rest is…
A. used in reproduction
B. stored as body tissue.
C. stored as fat.
D. eliminated as heat
28. 6F Energy stored in
organic molecules is passed
from producers to consumers.
This statement best describes
an event in
A. Ecological succession
B. A food chain
C. Natural selection
D. photosynthesis
29. 6B Carbon dioxide is
released into the
atmosphere by all of the
following EXCEPT for the
A. Burning of trees and forest.
B. Burning of fossil fuels.
C. Depletion of the ozone layer.
D. Cellular Respiration
30. 6f What is the original
source of almost all energy in
most ecosystems?
A. Carbohydrates
B. Sunlight
C. Water
D. Carbon
6C
31. 6C There are 150 saguaro
cacti plants per square
kilometer in a certain area of
Arizona desert. To which
population characteristics
does this information refer?
A. Growth rate
B. Age structure
C. Geographic distribution
D. Population density
32. 6C When organisms
move into a given area
from another area, what
is taking place?
A. immigration
B. emigration
C. Population shift
D. Carrying capacity
33. 6C When organisms
move out of the
population they were
born in, it is known as
A. emigration
B. abandonment
C. immigration
D. succession
34. 6C Which are
two ways a
population can
decrease in size?
A. Immigration and emigration
B. Increase death rate & immigration
C. Decreased birthrate and emigration
D. Emigration & increased birthrate
35.6C Biotic or abiotic
resources in the
environment that limits the
size of a population is a
A. Carrying Capacity.
B. Limiting Nutrient.
C. Limiting Factor
D. Growth factor
36.6C The number of
organisms that an
environment can support
over a relatively long
period of time is called
A. Carrying Capacity.
B. Logistic growth
C. Limiting Factor
D. Exponential growth
37.6C If a population
grows larger than the
carrying capacity of the
environment, the
A. Death rate may rise.
B. Birthrate may rise.
C. Death rate must fall
D. Birthrate must fall
38.6C Demography
is the scientific
study of
A. Democratic societies
B. Modernized countries
C. Human populations
D. Economic transitions
39.6C One of the
main characteristics
of a population is its
A. Change over time
B. Geographic distribution
C. Dynamics
D. Habitat
40.6C Demographic
transition begins with
changes in society that
A. Lower the birthrate.
B. Modernize the country.
C. Lower the death rate.
D. Explain why populations change.
Ecology BM
1. D
2. B
3. A
4. C
5. D
6. D
7. D
8. C
9. B
10. D
11. B
12. A
13. C
14. C
15. A
16. A
17. D
18. D
19. D
20. A
21. D
22. A
23. C
24. C
25. D
26. E
27. D
28. B
29. C
30. B
31. D
32. A
33. A
34. C
35. C
36. A
37. A
38. C
39. B
40. C