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Botany · Ch 5 — Taxonomy and Systematic Botany

Differences between classical and modern taxonomy

5.11.7

Differences between classical and modern taxonomy

Classical (Alpha/old-systematics) taxonomy is pre-Darwinian: it treats species as a static basic unit and classifies mainly using morphological characters, drawing conclusions from the observation of only a few samples or individuals. Modern (Omega/Neosystematics/Biosystematics) taxonomy is post-Darwinian: it treats species as a dynamic, ever-changing entity, and classifies using morphological AND reproductive characters together with the organism's phylogenetic (evolutionary) relationships, d …

Table 5.9Classical Taxonomy vs Modern Taxonomy
Classical TaxonomyModern Taxonomy
Called old systematics or Alpha (a) taxonomy or TaxonomyCalled Neosystematics or Biosystematics or Omega (O) taxonomy
Pre-DarwinianPost-Darwinian
Species considered as basic unit and is staticSpecies considered as dynamic entity and ever changing
Classification is mainly based on morphological charactersClassification is based on morphological, reproductive characters and phylogenetic (evolutionary) relationship of the organism