Classification

Cards (20)

  • Why did scientists begin to classify species?
    To organize the enormous variety of organisms
  • Who began to classify species in the 1700s?
    Carolus Linnaeus
  • What are the two kingdoms Linnaeus divided organisms into?
    Animal kingdom and plant kingdom
  • What are the categories Linnaeus used to classify organisms?
    • Kingdom
    • Phylum
    • Class
    • Order
    • Family
    • Genus
    • Species
  • What mnemonic can help remember Linnaeus's classification system?
    King Phillip came over for good soup
  • If given a classification of an organism, what might you be asked to fill in?
    The missing category in the classification
  • What is the binomial name for a zebra?
    Equus quagga
  • What does the term "binomial" refer to in classification?
    It means two names for an organism
  • What is the binomial name for the polar bear?
    Ursus maritimus
  • What is a key fact about Linnaeus's classification system?
    It is based on observable characteristics
  • What major advances in biology have occurred since Linnaeus's time?
    Microscopy and DNA analysis
  • Who developed the three domain classification system?
    Carl Woese
  • What are the three domains in the three domain system?
    • Archaea: Primitive bacteria in extreme conditions
    • Bacteria: True bacteria, e.g., in human digestion
    • Eukaryota: Includes animals, plants, fungi, and protists
  • What type of conditions do archaea often inhabit?
    Extreme conditions like hot springs
  • What organisms are included in the eukaryota domain?
    Animals, plants, fungi, and protists
  • How do scientists use evolutionary trees?
    To show relationships between organisms
  • What data do scientists use to create evolutionary trees for living organisms?
    Classification data and DNA
  • What do scientists use for extinct organisms when creating evolutionary trees?
    Fossils
  • What problem can arise when using fossils for evolutionary trees?
    Fossil records may be incomplete
  • What does an evolutionary tree indicate about species one, two, and three?
    They share a common ancestor