In biology, who is credited with developing the binomial scientific naming system?

• A. Darwin
• B. Linnaeus
• C. Haeckel
• D. Lamarck

Answer: (B)

The main idea being tested is who first created the two-part, universally used naming system for living organisms. Carl Linnaeus did this in the 18th century, most famously in his work Systema Naturae, by introducing binomial nomenclature. This system gives each species a genus name followed by a specific epithet, forming a unique two-part scientific name. It uses Latin or Latinized words, with the genus capitalized and the species epithet lowercase, and it is usually written in italics. This standardization lets scientists worldwide refer to the same organism unambiguously, regardless of local common names.

The other figures contributed to biology in important ways—Darwin with the theory of evolution by natural selection, and Haeckel and Lamarck with ideas about evolution and taxonomy—but they did not originate the binomial naming system. Linnaeus’s naming framework remains the foundation for how species are named and organized in biological classification.