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  2. Kingdom (biology) - Wikipedia

    en.wikipedia.org/wiki/Kingdom_(biology)

    The classification of living things into animals and plants is an ancient one. Aristotle (384–322 BC) classified animal species in his History of Animals , while his pupil Theophrastus ( c. 371 – c. 287 BC ) wrote a parallel work, the Historia Plantarum , on plants.

  3. Cavalier-Smith's system of classification - Wikipedia

    en.wikipedia.org/wiki/Cavalier-Smith's_system_of...

    By 1998, Cavalier-Smith had reduced the total number of kingdoms from eight to six: Animalia, Protozoa, Fungi, Plantae (including red and green algae), Chromista, and Bacteria. [44] Five of Cavalier-Smith's kingdoms are classified as eukaryotes as shown in the following scheme: Eubacteria; Neomura. Archaebacteria; Eukaryotes. Kingdom Protozoa

  4. Monera - Wikipedia

    en.wikipedia.org/wiki/Monera

    The term Monera became well established in the 20s and 30s when to rightfully increase the importance of the difference between species with a nucleus and without. In 1925, Édouard Chatton divided all living organisms into two sections, Prokaryotes and Eukaryotes: the Kingdom Monera being the sole member of the Prokaryotes section. [23]

  5. Linnaean taxonomy - Wikipedia

    en.wikipedia.org/wiki/Linnaean_taxonomy

    Originally, Linnaeus established three kingdoms in his scheme, namely for Plants, Animals and an additional group for minerals, which has long since been abandoned. Since then, various life forms have been moved into three new kingdoms: Monera, for prokaryotes (i.e., bacteria); Protista, for protozoans and most algae; and Fungi.

  6. Taxonomic rank - Wikipedia

    en.wikipedia.org/wiki/Taxonomic_rank

    Cladistics is a method of classification of life forms according to the proportion of characteristics that they have in common (called synapomorphies). It is assumed that the higher the proportion of characteristics that two organisms share, the more recently they both came from a common ancestor.

  7. Domain (biology) - Wikipedia

    en.wikipedia.org/wiki/Domain_(biology)

    Carl Linnaeus made the classification "domain" popular in the famous taxonomy system he created in the middle of the eighteenth century. This system was further improved by the studies of Charles Darwin later on but could not classify bacteria easily, as they have very few observable features to compare to the other domains.

  8. Taxonomy (biology) - Wikipedia

    en.wikipedia.org/wiki/Taxonomy_(biology)

    ] Linnaeus used this as the top rank, dividing the physical world into the vegetable, animal and mineral kingdoms. As advances in microscopy made the classification of microorganisms possible, the number of kingdoms increased, five- and six-kingdom systems being the most common. Domains are a relatively new grouping.

  9. Template:Full biological kingdom classification - Wikipedia

    en.wikipedia.org/wiki/Template:Full_biological...

    1938 [5] [6] Whittaker 1969 [7] Woese et al. 1977 [8] [9] Woese et al. 1990 [10] Cavalier-Smith 1993 [11] [12] [13] Cavalier-Smith 1998 [14] [15] [16] Ruggiero et al. 2015 [17] — — 2 empires: 2 empires: 2 empires: 2 empires: 3 domains: 3 superkingdoms 2 empires: 2 superkingdoms: 2 kingdoms 3 kingdoms — 4 kingdoms: 5 kingdoms: 6 kingdoms ...