The Following Questions Refer to the Description Below

question 53

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 the body shape of snakes has resulted in one of their lungs becoming 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:

Organizational Positions

Designated roles or jobs within an organization, each with specific responsibilities and authority levels, structured to contribute to the organization's goals.

Interdependent

Describes a situation or relationship where parties are mutually reliant on each other to achieve certain goals or outcomes.

Independent

Free from the control, influence, support, aid, or the like, of others.

Mentally Strenuous

Describing tasks or activities that require a high level of cognitive effort and concentration.