What are characteristics and give examples of perfect competition?

Perfect competition is characterized by a large number of buyers and sellers, homogeneous products, free entry and exit from the market, and perfect information. In this market structure, no single buyer or seller can influence the market price, leading to an equilibrium where price equals marginal cost. Examples of perfect competition are rare, but agricultural markets, such as those for wheat or corn, often come close, as many farmers sell uniform products and have little control over pricing.