1 / 9

Understanding the Classification of Living Things: Taxonomy, Nomenclature, and Identification

This chapter explores the classification of living organisms through taxonomy, the scientific naming system known as binomial nomenclature, and the significance of scientific versus common names. It explains the proper format for writing scientific names and highlights the importance of using consistent naming to avoid confusion. Additionally, it covers the use of dichotomous keys for identifying unknown organisms and discusses taxonomic rankings, underscoring the relationship between genera and species. Learn how classifications contribute to our understanding of biodiversity.

adina
Télécharger la présentation

Understanding the Classification of Living Things: Taxonomy, Nomenclature, and Identification

An Image/Link below is provided (as is) to download presentation Download Policy: Content on the Website is provided to you AS IS for your information and personal use and may not be sold / licensed / shared on other websites without getting consent from its author. Content is provided to you AS IS for your information and personal use only. Download presentation by click this link. While downloading, if for some reason you are not able to download a presentation, the publisher may have deleted the file from their server. During download, if you can't get a presentation, the file might be deleted by the publisher.

E N D

Presentation Transcript

  1. Chapter 17.1 Classification

  2. Section 17.1 Summary – pages 443-449 Classification of Living Things • Classification—the grouping of objects or information based on similarities. • Taxonomy - branch of biology that groups and names organisms based on studies of their different characteristics.

  3. Section 17.1 Summary – pages 443-449 Bbinomialnomenclature • Binomial nomenclature = two-word naming system to identify species (developed by Carolus Linnaeus.) • First word = genus of the organism. • Second word = specific epithet. • The scientific name for each species is thus a combination of the genus name and specific epithet.

  4. Section 17.1 Summary – pages 443-449 Scientific and common names • Scientific names should be italicized in print and underlined when handwritten. • First letter of the genus name is uppercase; first letter of the specific epithet is lowercase. Example: Drosophila melanogaster

  5. Section 17.1 Summary – pages 443-449 Why not use common names? • Common names can be misleading. For example, a sea horse is a fish, not a horse. • Also, it is confusing when a species has more than one common name.

  6. Section 17.1 Summary – pages 443-449 Dichotomous keys • Dichotomous keys - sets of numbered statements used to identify unknown organisms. • Each set deals with a single characteristic of an organism, such as leaf shape.

  7. Section 17.1 Summary – pages 443-449 Taxonomic rankings • A group of organisms is called a taxon. • Species - the smallest taxon is species. What defines a species? • Genus—a group of similar species that have similar features and are closely related.

  8. Section 17.1 Summary – pages 443-449 Taxonomic rankings • Compare the appearance of a lynx, Lynx canadensis, and a bobcat, Lynx rufus. Bobcat Lynx

  9. Section 17.1 Summary – pages 443-449 Domain Eukarya Kingdom Animalia Chordata Phylum Class Mammalia Carnivora Order Felidae Family Lynx Genus Species Lynx rufus Lynx canadensis

More Related