The Following Questions Refer to the Description Below

question 89

Multiple Choice

The following questions refer to the description below.
Terry catches a ray-finned fish from the ocean and notices that attached to its flank is an equally long, snakelike organism. The attached organism has no external segmentation, no scales, a round mouth surrounded by a sucker, and two small eyes. Terry thinks it might be a marine leech, a hagfish, or a lamprey.
-Terry takes the body of the snakelike organism and slices it open along its dorsal side. If it is a hagfish, what should Terry see?

• A) a well-developed series of bony vertebrae surrounding the spinal cord
• B) a well-developed series of cartilaginous vertebrae surrounding the spinal cord
• C) a tube of cartilage (surrounding the notochord) with dorsal projections on both sides of the spinal cord
• D) a notochord, located underneath the spinal cord

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Definitions:

Discouraged Workers

Individuals who are not actively seeking employment because they believe no jobs are available for them.

Frictionally Unemployed

Individuals who are temporarily out of work while moving between jobs or looking for their first jobs.

Voluntarily Quits

The act of an employee choosing to leave their job out of their own will, often for reasons such as a better opportunity, personal reasons, or dissatisfaction with the current job.

Full Employment

A situation where all available labor resources are being used in the most efficient way possible, leading to no cyclical unemployment.