Phylogenetic Classification Systems
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Questions and Answers

Which classification system is based on observable characteristics and uses computers for processing?

  • Chemotaxonomy
  • Phylogenetic taxonomy
  • Numerical taxonomy (correct)
  • Cytotaxonomy
  • What type of information does cytotaxonomy use for classification?

  • Evolutionary relationships
  • Chemical constituents
  • Observable characteristics
  • Chromosome number and structure (correct)
  • Which method assumes that organisms belonging to the same taxa have a common ancestor?

  • Chemotaxonomy
  • Phylogenetic classification (correct)
  • Cytotaxonomy
  • Numerical taxonomy
  • Which type of taxonomy uses chemical constituents to resolve classification confusions?

    <p>Chemotaxonomy</p> Signup and view all the answers

    Why do taxonomists use alternative classification methods like numerical taxonomy and chemotaxonomy?

    <p>To resolve difficulties in classification, especially without fossil evidence</p> Signup and view all the answers

    Study Notes

    Phylogenetic Classification

    • Classification systems based on evolutionary relationships between organisms are currently acceptable, assuming a common ancestor for organisms within the same taxa.

    Resolving Classification Difficulties

    • Information from multiple sources is used to resolve classification difficulties, particularly when fossil evidence is lacking.

    Numerical Taxonomy

    • Numerical Taxonomy is a method that uses computers to analyze all observable characteristics of an organism.
    • Each characteristic is assigned a number and code, and data is processed to give equal importance to each character.
    • Hundreds of characteristics can be considered simultaneously using this method.

    Additional Taxonomic Approaches

    • Cytotaxonomy: uses cytological information such as chromosome number, structure, and behavior to resolve classification difficulties.
    • Chemotaxonomy: uses the chemical constituents of plants to resolve classification confusions.

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    Description

    Quiz on phylogenetic classification systems, evolutionary relationships, and numerical taxonomy.

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