Classical Taxonomy:
1. It is called old systematics or Alpha (α) – taxonomy or Taxonomy
2. It is pre – Darwinean
3. Species is considered as basic unit and is static
4. Classification is mainly based on morphological characters
5. This system is based on the observation of a few samples / individuals
Modern Taxonomy:
1. It is called Neosystematics or Biosystematics or Omega (Ω) taxonomy
2. It is post – Darwinean
3. Species is considered as dynamic entity and ever changing
4. Classification is based on morphological, reproductive characters and phylogenetic (evolutionary) relationship of the organism
5. This system is based on the observation of large number of samples / individuals