Which one among the following is the correct scheme followed for classification of animals?

The biological classification of animals follows a hierarchical system known as the Linnaean taxonomy, which organizes living organisms from the most general to the most specific categories [2]. The standard sequence of these taxonomic ranks is Kingdom, Phylum, Class, Order, Family, Genus, and Species. In this hierarchy, a Phylum is a broad category that is subdivided into Classes. Each Class is further divided into Orders, which are then subdivided into Families [1]. Families consist of related Genera, and each Genus contains closely related Species. This nested structure reflects evolutionary relationships, where specificity increases as one moves down the hierarchy [2]. Therefore, the correct scheme starting from Phylum is Phylum → Class → Order → Family → Genus → Species, as it correctly represents the descending order of inclusivity in biological classification.

Sources

1. [2] https://en.wikipedia.org/wiki/Taxonomic_rank
2. [1] https://en.wikipedia.org/wiki/Order_(biology)