Page 3 - Lesson notes- Living world

-Nomenclature is done as per criteria given in ICBN (International code for
botanical nomenclature)& ICZN (International code for zoological
nomenclature)
-Binomial nomenclature was given by CAROLUS LINNAEUS.
1.First word is Generic name & second word is Specific epithet in scientific
name of organism.
-Names are in Latin or Latinised word.
-Names, if hand written are separately underlined & if printed, are italicised.
-First word starts with capital letter & second word with small letter. Example:
Mangifera indica (Mango)
-Name of author in last as abbreviation.
-For ease of study organisms are classified into groups or categories known as
taxa.
1.eg. Taxon may be Dogs, Mammals, wheat, Rice etc.
-Process of classification into different taxa is called taxonomy.
-Identification, classification, nomenclature are basic to taxonomy.
-Systematics studies evolutionary relationship between organisms.

Taxonomic categories :

-Each rank or category of classification is termed as taxonomic category.
-Arrangement of categories in sequence is termed as Taxonomic Hierarchy.