Which Structure in a Shark Is Closest in Function to a Swim

question 40

Multiple Choice

Which structure in a shark is closest in function to a swim bladder in a ray-finned fish?

• A) its lateral line system
• B) its spiral valve
• C) its liver
• D) its gills

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Definitions:

Perfectly Competitive

A market structure where many firms sell identical products, entry and exit are easy, and no single buyer or seller can influence the market price.

Equilibrium Value

The stable value at which supply equals demand for a particular good, service, or financial instrument, leading to a balanced market condition.

Marginal Product

The additional output that results from using one more unit of a particular input, while holding other inputs constant.

Average Product

The output produced per unit of input, calculated by dividing total output by the number of units of a specific input.