The Following Questions Refer to the Description Below

question 109

Multiple Choice

The following questions refer to the description below.
While on an intersession course in tropical ecology, Kris pulls a large, snakelike organism from a burrow (the class was granted a collecting permit) . The 1-m-long organism has smooth skin, which appears to be segmented. It has two tiny eyes that are hard to see because they seem to be covered by skin. Kris brings it back to the lab at the field station, where it is a source of puzzlement to the class. Kris says that it is a giant oligochaete worm; Shaun suggests it is a legless amphibian; Kelly proposes it belongs to a snake species that is purely fossorial (lives in a burrow) .
-The organism was found to have two lungs, but the left lung was much smaller than the right lung. Kelly added that the herpetology instructor had said that in most snakes, the same condition exists. If the size difference between the lungs in this organism is not a shared ancestral characteristic with its occurrence in snakes, then its existence in this organism is explained as which of the following?
1) a result of convergent evolution
2) an example of homologous structures
3) a similar adaptation to a shared lifestyle or body plan
4) a result of having identical Hox genes
5) a homoplasy

• A) 3 only
• B) 1 and 5
• C) 1, 3, and 5
• D) 2, 3, and 5
• E) 3, 4, and 5

Understand the role of factor endowments in shaping the trade patterns of countries.

Assess the impacts of trade policies such as tariffs, quotas, and subsidies on international trade.

Identify the strategies and theories related to protecting emerging industries.

Understand the concept of economies of scale and its significance in international trade.

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