Cave-Dwelling Catfish and Cave-Dwelling Salamanders Share Striking Similarities: Both Organisms

question 41

Multiple Choice

Cave-dwelling catfish and cave-dwelling salamanders share striking similarities: Both organisms lack pigmentation, and their eyes are reduced or absent. The most recent common ancestor to these organisms had normal pigmentation and fully developed eyes. The similarities between cave catfish and cave salamanders are an example of

• A) phylogeny.
• B) analogy.
• C) homology.
• D) exaptation.

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Definitions:

Elastic Product Demand

A situation where the demand for a product is sensitive to changes in price, meaning small price changes can cause large changes in quantity demanded.

Economic Profits

Profits that exceed the opportunity costs of all resources employed by the firm, reflecting earnings above the normal expected return.

Inputs Prices

The cost of the resources used in the production process, including raw materials, labor, and overhead.

Labor and Capital

Labor and capital are the two main factors of production; labor refers to human work, while capital refers to assets used in producing goods and services.