Which one of the following is the correct sequence of levels of hierarchy of classification of organisms from higher to lower?

  1. Phylum – Class – Order – Family – Genus
  2. Phylum – Class – Family – Order – Genus
  3. Family – Order – Class – Species – Genus
  4. Class – Family – Order – Species – Genus


Grouping of organism according to similarities and differences is termed classification. When an organism is classified into various categories, a hierarchy is maintained.

Accordingly, an organism belongs to Kingdom, Phylum, Class, Order, Family, Genus and Species in hierarchical order.

The correct option is A.

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