Which one of the following is the correct sequence of levels of hierarchy of classification of organisms from higher to lower?

The biological hierarchy of classification, also known as the Linnaean system, organizes organisms into increasingly specific categories. From the highest (most general) level to the lowest (most specific), the standard sequence is Domain, Kingdom, Phylum, Class, Order, Family, Genus, and Species [1]. In this hierarchy, a Phylum consists of multiple Classes, a Class is composed of related Orders, an Order contains various Families, and a Family groups together related Genera. This nested structure ensures that each level is contained within the rank above it. Option 1 correctly follows this descending order: Phylum (highest in the list), followed by Class, Order, Family, and Genus (lowest in the list). Other options are incorrect because they misplace the relative positions of Order and Family or Genus and Species.

Sources

1. [1] https://www.nhm.ac.uk/discover/what-is-taxonomy.html