Multiple-choice midterm 1) Which of the following biomes is characterized by a c
ID: 234734 • Letter: M
Question
Multiple-choice midterm
1)
Which of the following biomes is characterized by a codominance of woody plants and grasses? It occurs in areas characterized by seasonally variable precipitation but high and seasonally stable temperatures.
A) tropical rain forest
b) tropical dry forest
c) tropical savanna
d) temperate forest
2) Which of the following statements about organisms of flowing-water systems is false?
Benthic species tend to be flattened with limbs designed for clinging.
Most organisms in flowing-water ecosystems that live in the water column adopt a streamlined form.
Animals of fast-flowing streams are adapted to survive periods of oxygen depletion.
Some organisms that move over the bottom have sticky ventral sides.
3) If you took a trip to a location at 25° south latitude and found that the local precipitation was well below the potential evaporative demand, you would be in a
shrubland
chaparral
desert
savanna
4) An ecologist measures the influence of annual rainfall on the growth rate of Douglas fir. These data should be displayed on a
scatter plot
frequency distribution
box plot
histogram
5) Ecological communities near deep-sea thermal vents include ________ as primary producers able to use
______ to release energy that can be used to fix carbon.
chemosynthetic bacteria, reduction of oxidized sulfur compounds
zooplankton, bacteria
photosynthetic bacteria, minimal amounts of sunlight
chemosynthetic bacteria, oxidation of reduced sulfur compounds
6) As a general relationship, the amount of light available at a given height in a forest canopy is _____ to the leaf area index above that height.
unrelated
indirectly related
inversely related
positively correlated
7)
With the exception of areas surrounding hydrothermal vents, benthic communities are
entirely heterotrophic and dependent on dead organism sinking from above.
mostly heterotrophic but can have significant amounts of primary productivity from photoautotrophs.
mostly heterotrophic, with only small amounts of primary productivity from photoautotrophs.
entirely heterotrophic and dependent on dead organism rising from below with upwelling currents.
A) tropical rain forest
b) tropical dry forest
c) tropical savanna
d) temperate forest
Explanation / Answer
b c a a b,c c c
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