| A | B |
|---|
| domain | The highest taxonomic rank of organisms based on shared similarities in DNA; archaea, bacteria, eukaryote. |
| kingdom | Highest classification into which living organisms are grouped in Linnean taxonomy above phylum; arachaebacteria, eubacteria, protest, fungi, plants, and animals. |
| phylum | The hierarchy of biological classification’s eight major taxonomic ranks, below kingdom, above class. |
| class | Biological classification, a taxonomic rank, class below phylum, above order. |
| order | Biological classification, a taxonomic rank, order below class, above family. |
| family | Biological classification, a taxonomic rank, family below order, above genus. |
| genus | Biological classification, a taxonomic rank, genus below family, above species. Name is capitalized and italicized. |
| species | Biological classification, a taxonomic rank, species below genus, organisms reproduce sexually and belong to the same species. |
| classification | The process of grouping things based on their similarities. |
| taxonomy | The scientific study of how living things are classified. |
| binomial nomenclature | The naming system for organisms in which each organism is given a two-part name—a genus name and a species name. |
| taxonomic key | A series of paired statements that describe the physical characteristics of different organisms. |
| unicellular | A type of organism that is made up of a single cell. |
| multicellular | A type of organism that is made up of many cells. |
| archae | Considered an ancient form of life that evolved separately from bacteria and blue-green algae; a kingdom. |
| bacteria | A single-celled organism that is a prokaryote; belongs to one of two kingdoms—Archaebacteria or Eubacteria. |
| eubacteria | Spherical or rod-shaped bacteria characterized by simple, undifferentiated cells with rigid walls |
| Eukarya | Membrane-bound organelles, including a nucleus, which contains genetic material, enclosed by the nuclear envelope. |
| protista | Any of various one-celled organisms including protozoans, eukaryotic algae, and slime molds |
| fungi | Diverse group of eukaryotic organisms that live by decomposing and absorbing organic material which they grow |
| plants | Multicellular organisms produce their own food from inorganic matter by photosynthesis, |
| animals | Multicellular organisms with well-defined shape an limited growth, move voluntarily, actively acquire food, digest internally, and have sensory and nervous systems |
| cnidarians | Invertebrate animal like hydra, jellyfish, sea anemone, or coral characterized by the specialized stinging structures in the tentacles surrounding the mouth |
| mollusks | Invertebrate have shell of one or more pieces that enclose part or whole of soft, unsegmented body like chitons, snails, bivalves, squids, octopuses. |
| annelids | Segmented worm including earthworms, leeches, and marine forms |
| arthropods | Any invertebrate having segmented body, jointed limbs, chitinous shell that undergoes molting like insects,, spiders, arachnids, crustaceans, and myriapods |
| echinoderms | Invertebrate marine animal having radiating arrangement of parts like starfish, sea urchins and sea cucumbers |
| chordates | Comprise true vertebrates and animals having a notochord |
| mosses | Any tiny, leafy stemmed, flowerless plant reproducing by spores and growing in tufts, sods, or mats on moist ground, tree trunks, and rocks |
| ferns | Seedless, nonflowering vascular plant with roots from rhizomes, fronds and branching vein systems, and reproduction by spores |
| conifers | Evergreen trees or shrubs including pine, fir, spruce, and other cone-bearing trees and shrubs |
| flowering plants | A plant that produces flowers, fruit, and seeds |
