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Description
Instructions
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Assessment Instructions
QUESTION 1
The number of species within a community is usually greatest when:
a disturbance occurs.
a low frequency of disturbance occurs.
an intermediate frequency of disturbance occurs.
a high rate of disturbance occurs.
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QUESTION 2
According to the figure, which species is considered a pioneer species?
Bromus techtorum
Bromus carinatus
Nassella pulchra
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1/3/2021 Take Test: Unit V Assessment – BIO 1302-17C-FA21L-S2, …
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Bouteloua curtipendula
QUESTION 3
What is an example of secondary succession?
Grasses colonizing sand dunes
Lichens colonizing a rock
Weeds colonizing a volcanic lava flow
Crabgrass colonizing an abandoned wheat field
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QUESTION 4
Which of the following are late successional species?
Trees
Grass
Weeds
Forbs
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QUESTION 5
Which of the following is NOT a general relationship?
Increasing patch size is related to increased species diversity.
Increasing patch size is related to increased population size.
Increasing patch size is related to increased edge-to-core ratio.
Increased body size is related to increased home range.
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A.
B.
C.
D.
E.
F.
G.
H.
I.
J.
QUESTION 6
Match the question to the correct answer.
The sequence of communities
from the pioneer community to the
climax community is called a(n)
________.
Early successional species are
referred to as ________ species.
Succession that occurs on a site
that was previously unoccupied by
another community is called
________ succession.
Environmental change is a direct
result of the organisms within the
________ community.
The patchwork of different types of
patch
edge
Island biogeography
autogenic
community
connectivity
Intermediate disturbance
corridors
mosaic
pioneer
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K.
L.
M.
p y
p
land cover is called a(n) ________
.
Strips of habitat that connect
habitat patches are referred to as
________.
Within a mosaic, a(n). ________ is
a relatively homogeneous
community type, differing from its
surroundings in both structure and
species composition.
The ________ effect refers to the
rich diversity of life that occurs
along the border between adjacent
habitat patches, represented by
species from both adjacent
patches and species adapted to
edge habitats.
A(n) ________ species lives within
the borders of a habitat patch,
avoiding edges where habitat
change is abrupt.
The degree to which the landscape
facilitates or impedes the
movement of organisms among
patches is called ________.
p
interior
sere
primary
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QUESTION 7
Assuming primary succession, list the following plant groups in order from early-
successional to late-successional.
shade tolerant trees
shrubs
lichen
shade-intolerant trees
grasses/herbaceous plants
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QUESTION 8
Explain the intermediate disturbance hypothesis as it relates to successional stages and species
diversity.
Your response should be at least 75 words in length.
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QUESTION 9
Explain the theory of island biogeography. What factors determine the rate of immigration (new species
establishment) and extinction?
Your response should be at least 200 words in length.
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