In which of the following taxonomy is equal weightage given to each of thousands of characters that a taxon exhibits?

In the scientific name of organisms,which taxonomic category is written in lowercase letters?

Which of the following are included in the taxonomic categories?

What is formed by a group of related genera?

Match the following taxonomic categories with their characteristics:

Category	Characteristic
$A$. Species	$i$. Related families
$B$. Genus	$ii$. Related genera
$C$. Order	$iii$. Organisms capable of interbreeding to produce fertile offspring
$D$. Family	$iv$. Group of species with a common ancestor

Brassica campestris Linn
$(a)$ Give the common name of the plant.
$(b)$ What do the first two parts of the name denote?
$(c)$ Why are they written in italics?
$(d)$ What is the meaning of Linn written at the end of the name?