Q. A taxon is

 3817  207 AIPMTAIPMT 1990The Living World Report Error

Solution:

A taxon is a taxonomic group of any rank. The term taxon is a collection of more than one population of the organisms or organism seen by the taxonomists for forming a unit. There are seven main taxonomic ranks: kingdom, phylum or division, class, order, family, genus, species. So, the correct option is 'A taxonomic group of any ranking'.