Exam 52: An Introduction to Ecology and the Biosphere

Use this description to answer the following question. In areas of permafrost, stands of black spruce are frequently observed in the landscape, while other tree species are noticeably absent. Often these stands are referred to as "drunken forests" because many of the black spruce are displaced from their normal vertical alignment. -What might be the adaptive significance of these unusual forests growing the way they do in this marginal habitat?

Which statement about dispersal is false?

The diagram shows a generalized cross section of the marine environment with various zones labeled with letters. Choose the letter that best answers the question. Letters may be used once, more than once, or not at all. -Which zone is comprised largely of detritus-feeding organisms?

Which statement describes how climate might change if Earth was 75% land and 25% water?

Which lake zone would be absent in a very shallow lake?

The eight climographs below show yearly temperature (line graph and left vertical axis) and precipitation (bar graph and right vertical axis) averages for each month for some locations on Earth. Choose the climograph that best answers the question or completes the statement. Climographs may be used once, more than once, or not at all. -Which of the following best substantiates why location 3 is an equatorial (tropical)climate?

As climate changes because of global warming, species' ranges in the northern hemisphere may move northward, using effective reproductive adaptations to disperse their seeds. The trees that are most likely to avoid extinction in such an environment are those that

Which of the following choices includes all of the others in creating global terrestrial climates?

Which of the following is characteristic of most terrestrial biomes?

Which of the following investigations would shed the most light on the distribution of organisms in temperate regions that are faced with climate change?

Why is the climate drier on the leeward side of mountain ranges that are subjected to prevailing winds?

The eight climographs below show yearly temperature (line graph and left vertical axis) and precipitation (bar graph and right vertical axis) averages for each month for some locations on Earth. Choose the climograph that best answers the question or completes the statement. Climographs may be used once, more than once, or not at all. -Which climograph shows the climate for location 1?

Which of the following is true with respect to oligotrophic lakes and eutrophic lakes?