$ICBN$ stands for

Karyotaxonomy is the modern branch of classification which is based on:

The number of species known and described at present ranges between:

The language used in writing the scientific names of animals is

The zoological name of the lion is:

$A$ species is defined as "the group of actually or potentially inter-breeding natural populations producing fertile offspring and reproductively isolated from such other groups". The above statement is given by