The Following Questions Refer to the Description Below

question 24

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 adaptation of snakes to their body shape has resulted in one of their lungs having become vestigial. Another adaptation (to a fossorial lifestyle) is snakes' absence of limbs. If the "mystery organism" has also become adapted to a fossorial lifestyle, though its ancestors moved about on the surface, then which structures should one expect to find upon dissecting the organism?
1) reduced or absent pelvic and/or pectoral girdles
2) metanephridia
3) hydrostatic skeleton

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

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Definitions:

Short Run

Describes a period during which at least one factor of production is fixed, limiting the ability of a firm to adjust to changes in market demand or supply conditions.

Baking Supplies

Baking supplies encompass all tools, ingredients, and materials used in baking, ranging from flour and sugar to ovens and mixing tools.

Fixed Cost

Any cost that in total does not change when the firm changes its output.

Harvest Labor

The workforce engaged in the process of gathering ripe crops from the fields.