The Following Questions Refer to the Description Below

question 22

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) .
-Which one of these, if found, should clear up any remaining doubt as to the identity of the organism?

• A) vestigial pelvic girdle
• B) blood vessels carrying oxygenated blood from both the skin and the functional lung to the heart
• C) closed circulatory system
• D) ability to produce toxins from glands located on the skin, or that empty into the mouth
• E) two-chambered heart

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Definitions:

Neural Change

Alterations in the structure or function of the nervous system as a result of growth, learning, or experience.

Behavioral Symptoms

Observable actions or behaviors exhibited by an individual that may indicate the presence of a neurological or psychiatric condition.

Neuronal Plasticity

The capacity of neurons and neural networks in the brain to change their connections and behavior in response to new information, sensory stimulation, development, damage, or dysfunction.

Compensatory Plasticity

The brain's ability to adjust and reorganize its functionalities in response to injury, loss, or developmental issues.