Campbell Bio Chapter 52 Test Bank
Questions With Verified Answers
1) If an ecologist were studying the regional interactions among multiple populations of different
species and how they influence the exchange of materials between their various environments,
then this would be an example of which kind of research? - Answers✔A) landscape ecology
2) What would happen to the seasons if Earth were tilted 35 degrees off its orbital plane instead
of the usual 23.5 degrees? - Answers✔B) Winters and summers would be more severe.
3) Which of the following causes seasons on Earth? - Answers✔B) the constant tilt of the Earth,
combined with its orbit around the sun
4) Which of the following might be an investigation of microclimate? - Answers✔D) how
sunlight intensity affects plant community composition in the zone where a forest transitions into
a meadow
5) In creating global climate patterns, which of the following factors is the primary cause of all
of the other factors that are listed? - Answers✔D) variation in the heating of Earth's surface
6) For mountain ranges that are subjected to prevailing winds, why is the climate drier on the
leeward (downwind) side? - Answers✔C) Pushed by the prevailing winds on the windward side,
air is forced to rise, cool, condense, and drop its precipitation, leaving drier air to descend the
leeward side.
7) What would be the effect on climate in the temperate latitudes if Earth were to slow its rate of
rotation from a 24-hour period of rotation to a 48-hour period of rotation? - Answers✔D) There
often would be a larger range between daytime high and nighttime low temperatures.
8) Subtropical plants are commonplace in Land's End, England, whose latitude is the equivalent
of Labrador in coastal Canada, where the local flora is instead subarctic. Which statement best
explains why this apparent anomaly exists between North America and Europe? - Answers✔B)
Warm ocean currents interact with England, whereas cold ocean currents interact with Labrador.
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9) In mountainous areas of western North America, north-facing slopes would be expected to
________. - Answers✔D) support biological communities similar to those found at higher
elevations on similar south-facing slopes
10) In the region of the Rocky Mountains, imagine that one local variety of Ponderosa pine
(Pinus ponderosa) predominantly occurs between 5,000-8,500 feet in elevation, where it can best
tolerate temperatures and precipitation. If future climate change in this region causes the
temperature to increase and rainfall to decrease, then which of the following changes might an
ecologist predict about the variety's range? - Answers✔D) that variety will occur at higher
elevations and/or higher latitudes
11) Imagine some cosmic catastrophe jolts Earth so that its axis is perpendicular to the orbital
plane between Earth and the sun. The most obvious effect of this change would be ________. -
Answers✔D) the elimination of seasonal variation
12) The main reason polar regions are cooler than the equator is that ________. - Answers✔A)
solar radiation strikes the poles at a lower angle and travels through more atmosphere
13) The success of plants extending their range northward following glacial retreat is primarily
determined by ________. - Answers✔C) their seed dispersal rate
14) As climate changes because of global warming, plant species' ranges in the northern
hemisphere may move northward. The trees that are most likely to avoid extinction in such an
environment are those that ________. - Answers✔A) have larger, more contiguous established
populations to begin with
15) Generalized global air circulation and precipitation patterns are caused by ________. -
Answers✔A) solar radiation that warms moist air masses near the equator, which then cool and
release precipitation as they rise, and then, at high altitude, move north or south of the tropics
and sink back to the surface as dry air masses
16) At 15-30°N, air masses formed over the Pacific Ocean are moved by prevailing westerlies,
where they encounter extensive north-south mountain ranges. Which statement best describes the
outcome of this encounter between a landform and an air mass? - Answers✔B) The warm, moist
Pacific air rises and cools, releasing precipitation as it moves up the windward side of the range.
This now cool and dry air mass heats up as it descends on the leeward side of the range.
17) Coral reefs occur on the southeast coast of the United States but not at similar latitudes on
the southwest coast. Differences in which of the following most likely account for this? -
Answers✔C) water temperatures driven by ocean currents
18) Which of the following investigations would shed the most light on the future distribution of
organisms in temperate regions that are faced with climate change? - Answers✔B) Look at the
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