Linnaeus classified plants into $24$ groups based on which of the following?

The scientist who proposed the 'New Systematics' is .......

Pedology is the science of .......

$A$ 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

Why is the classification of organisms necessary?

Describe Binomial Nomenclature and what is its advantage?