click below
click below
Normal Size Small Size show me how
Taxonomy Vocabulary
| Term | Definition |
|---|---|
| Binomial Nomenclature | The system of naming organisms scientifically, developed by Carolus Linnaeus; consists of the genus and species names. |
| Kingdom | The highest level of taxonomic classification beneath that of the three domains. |
| Phylum | The taxonomic level below kingdom and above class. |
| Class | The taxonomic level below phylum and above order. |
| Order | The taxonomic level below class and above family. |
| Family | The taxonomic level below order and above genus. |
| Genus | The taxonomic level below the family and above the species; the first part of the binomial nomenclature. |
| Species | A group of organisms that can interbreed to generate fertile offspring. |
| Cladogram | A branching diagram representing a hypothesis about the evolutionary descent of groups of organisms from a common ancestor. |
| Dichotomous Key | A tool used to classify an organism through a series of questions with only two possible answers. |
| Ancestry (ancestries) | The lineage of successive parents and offspring that leads to an organism or species. |
| Cladistics | A classification system based on shared characteristics between groups of organisms and their common ancestor. |
| Unicellular | Composed of a single cell. |
| Multicellular | Composed of more than one cell. |
| Heterotrophic (heterotroph) | An organism that must consume other organisms for energy. |
| Autotrophic (autotroph) | An organism that obtains its energy from an abiotic source such as sunlight or inorganic chemicals. |
| Chemotropic (chemotroph) | An organism that can produce its own nourishment through the process of oxidizing inorganic compounds. |
| Eukaryotic Cell | A cell with a nucleus and membrane-bound organelles. |
| Prokaryotic Cell | A cell lacking a nucleus or any other membrane-enclosed organelle. |
| Sexual Reproduction | The reproductive process involving two parents whose genetic material is combined to produce a new organism different from themselves. |
| Asexual Reproduction | A method of reproduction that requires only one parent and produces offspring identical to the parent. |
| Phylogeny | The evolutionary development of a species. |
| Who was the first person to classify living things based on their characteristics? | Aristotle |
| Why do we need a world wide standard of classifying living things? | Because before communication about organisms was impossible with all the different names and classification techniques. |
| Who was the father of taxonomy? | Carolus Linnaeus |
| What is the broadest level of classification? | The domain |
| What order to the levels of classification go in? Broadest to smallest. | Domain-Kingdom-phylum-class-order-family-genus-species |
| What is binomial Nomenclature? | The two most specific taxonomic levels (genus, species) that animals are most commonly referred to. |
| What are the three domains? | Bacteria, Archaea, and Eukarya |
| What organisms are in the bacteria domain? | Unicellular organisms that live everywhere around the world. |
| What organisms are in the archaea domain? | like bacteria, unicellular prokaryotes, but unlike bacteria, the cell walls do not have peptidoglycan. Their cell membranes also have different lipids. |
| What organisms are in the Eukarya domain? | Organisms whose cells have nuclei and membrane-bound organelles. |
| What kingdoms are in the Eukarya domain? | Protista, plantae, fungi, and animalia. |
| What two methods are used to classify organisms? | Dichotomous Key and Cladogram |
| What is a dichotomous key? | A type of flow chart used to classify organisms based on traits. Each step brings you closer to the latin name of the organism. |
| What is a cladogram? | A branch diagram that shows the evolutionary relationship between organisms |