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WorksheetsCommunity Interactions
Total questions: 20
Worksheet time: 10mins
Name
Class
Date
1.
Lines are drawn on a map and individuals occurring on those lines or belts are sampled
a)
transects
b)
quadrats
c)
point sampling
d)
mark and recapture
2.
sampling units are placed randomly or in a grid pattern on the sampling area
a)
transects
b)
quadrats
c)
point sampling
d)
mark and recapture
3.
Cone shaped filtering unit dragged through the water to collect tiny aquatic organisms
a)
Plankton net
b)
Kick sampling
c)
Pitfall trap
d)
Beating tray
4.
trees or branches are shaken and fallen insects, etc. are collected
a)
Plankton net
b)
Kick sampling
c)
Pitfall trap
d)
Beating tray
5.
the number of different species a community contains
a)
richness
b)
evenness
c)
density
d)
abundance
6.
abundance of individuals within each of the species in a community
a)
richness
b)
evenness
c)
density
d)
diversity
7.
diversity is highest in the tropics and declines as we move from the equator toward the poles
a)
niche structure
b)
geographic location
c)
evenness
d)
density
8.
how many potential niches occur, how they resemble or differ, how the various species interact
a)
niche structure
b)
geographic location
c)
evenness
d)
density
9.
species help determine the types and numbers of other species in an area, helping to sustain the ecosystem
a)
keystone
b)
native
c)
indicator
d)
foundation
10.
organisms that serve as early warnings of damage to a community or an ecosystem
a)
keystone
b)
native
c)
indicator
d)
foundation
11.
organisms that create and enhance habitats that can benefit other species in a community
a)
keystone
b)
native
c)
indicator
d)
foundation
12.
exist only in one geographic region
a)
keystone
b)
native
c)
endemic
d)
foundation
13.
Some are fast enough to catch prey, some lie in wait, some paralyze their prey
a)
predators
b)
prey
c)
parasites
d)
hosts
14.
Some escape or have outer protection, some are camouflaged, some use chemicals to repel attacks
a)
predators
b)
prey
c)
parasites
d)
hosts
15.
can harm their hosts, but can promote community biodiversity
a)
predators
b)
prey
c)
parasites
d)
hosts
16.
may require a vector prior to infecting host
a)
predators
b)
prey
c)
parasites
d)
hosts
17.
Competition between members of different species.
a)
Intraspecific competition
b)
Interspecific competition
c)
resource partitioning
d)
competitive exclusion
18.
Skimmers, flamingos, diving duck, and heron can coexist in a coastal wetland as a result of
a)
Intraspecific competition
b)
Interspecific competition
c)
resource partitioning
d)
competitive exclusion
19.
two species interact in a way that benefits both
a)
mutualism
b)
amensalism
c)
commensalism
d)
antibiosis
20.
an interaction that benefits one species but has little, if any, effect on the other species
a)
mutualism
b)
amensalism
c)
commensalism
d)
antibiosis
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