EVERYDAY SCIENCE

Detailed explanation-1: -Classification in the 1700s was based entirely on the morphological characteristics (what something looks like) of the organism. Those that looked most alike were put closest together in each category.

Detailed explanation-2: -Traditional classification He divided the natural world into 3 kingdoms and used five ranks: class, order, genus, species, and variety. He also introduced the system of binomial nomenclature, in which every species has an internationally recognized two-part name.

Detailed explanation-3: -Taxonomy is the study of relationships between living things and the formal classification of organisms into groups based upon those hypothesized relationships. Organisms are classified based upon their similarities and differences.

Detailed explanation-4: -In 1753, a Swedish biologist named Carl Linnaeus (also known as Carl von Linné) proposed a universal system for classifying and naming animals and plants. Scientists still use this Linnean system to classify living things. A hierarchical system, it works like a series of nesting boxes (Fig. 1.9).

Detailed explanation-5: -The Linnaean system is based on similarities in obvious physical traits. It consists of a hierarchy of taxa, from the kingdom to the species. Each species is given a unique two-word Latin name. The recently added domain is a larger and more inclusive taxon than the kingdom.