The suffix used for denoting a sub-family in biological classification is .........

In a scientific name,what taxonomic category does the second word represent?

How many of the following statements are correct?
$(A)$ Each taxonomic category is a unit of classification.
$(B)$ Taxonomic groups are distinct biological entities.
$(C)$ Genera are aggregates of closely related families.
$(D)$ Both vegetative and reproductive characters are used to characterise the families.

As we go from species to kingdom in a taxonomic hierarchy,the number of common characteristics

Which of the following options represents the correct sequence of taxonomic categories based on increasing similarity of characteristics?

Species are considered as