Need for
classification
We come
across many places where things are arranged in specific categories. In super
markets, the shelves can have rows and columns of groceries, cosmetics, toys,
stationeries, snacks and utensils. If it is not arranged in a well organized
manner, customers and sales persons will waste lot of time in finding an item.
In the same way, libraries also organize the books alphabetically or genres-
wise into autobiographies, novels, kids stories, science fictions, etc. Likewise
it is nearly impossible to study all the living organism hence it becomes
necessary to device some means and methods to make this possible and this
process is called classification. Classification is a process by which things
are grouped in convenient categories, based on easily observable
characters. The scientific term used for these categories is taxa (taxon–singular). Taxa indicates
categories at different levels, for example Kingdom Animalia, includes
multicellular animals such as reptiles, mammals, etc. Based on their
characteristics, all living organisms can be classified into different taxa.
This science of classification- is called taxonomy.
-External and internal structures along with developmental processes and
ecological information of organisms are essential, as they form basis of the
taxonomical studies. Hence, characterisation, identification, nomenclature and
classification- are the scientific stages that are basic to taxonomy.
The basic
need for classifications are:
•
To identify and differentiate closely related
species
•
To know the variation among the species
•
To understand the evolution of the species
•
To create a phylogenetic tree among the different
groups
•
To conveniently study living organisms
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