Chapter 52. An Introduction to Ecology and the Biosphere. Questions prepared by Eric Ribbens Western Illinois University John Zarnetske Hoosick Falls Central Schools. 1. Ecology is often called an integrative science. This means that ecologists. need to be able to calculate integrals. - PowerPoint PPT Presentation
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CLICKER QUESTIONS For CAMPBELL BIOLOGY, NINTH EDITION
Jane B. Reece, Lisa A. Urry, Michael L. Cain, Steven A. Wasserman, Peter V. Minorsky, Robert B. Jackson
3. Study the following graph. Seaweed was much more abundant when limpets and sea urchins were removed. However, removing limpets alone had no effect, but removing sea urchins alone had a substantial effect. From this, you can conclude that
a) limpets don’t eat seaweed.
b) limpets eat sea urchins.
c) limpets don’t matter.
d) sea urchins can eat more seaweed than limpets can.
e) limpets can eat more seaweed than sea urchins can.
6. Biomes are affected by disturbance andclimate. However, disturbances usually don’t change a biome from one type of biome to another. Which of the following is an exception?
a) Temperate forests can be changed to grassland by frequent fires.
b) Grasslands can be changed to estuaries by frequent floods.
c) Deserts can be changed to chaparral by frequent acid overgrazing.
d) Boreal forests can be changed to tundra by excessive snowfall amounts.
e) Tropical rain forest can be changed to savanna by frequent hurricanes.
7. The tundra biome is situated as a gray band in the Northern Hemisphere, especially along the Arctic Ocean and the edges of Greenland. There is no comparable band in the Southern Hemisphere. This is probably because
a) the tundra plants and animals can’t migrate that far away.
b) it’s warmer in the Southern Hemisphere.
c) Global wind and pressure areas differ in the northern and Southern Hemispheres.
d) it has all been destroyed by global warming.
e) there isn’t land at that latitude in the Southern Hemisphere.
9. Identify three specific biome boundaries that would have to be redrawn if global temperature were to increase 4oC and explain why the change in distribution would likely occur.
10. Describe the seasonal turnover in deep temperate lakes in terms of the physical properties of water. Discuss the importance of this seasonal turnover to the organisms in a lake ecosystem.
11. Plants carry on photosynthesis several different ways. In particular, we classify plants as C3 or C4 plants (in reference to the carbon compound they manufacture at first). C3 plants do better in cooler environments, C4 plants in warmer environments. Therefore, we would expect
a) tropical forests to be dominated by C4 plants.
b) temperate grasslands to be dominated by C3 plants.
c) temperate broadleaf forests to be dominated by C4 plants.
d) tundra regions to be dominated by C3 plants.
e) that C3 and C4 plants should be present in every biome.