In which order are the levels of biological classification arranged?

The correct arrangement of the levels of biological classification begins with Domain, followed by Kingdom, then Phylum, and finally Class. This hierarchical system is a way to categorize and organize living organisms based on shared characteristics and evolutionary relationships.

Starting with Domain at the broadest level, this classification includes the highest groupings of life, which are Bacteria, Archaea, and Eukarya. From there, within each domain, organisms are further categorized into Kingdoms, which represent major divisions within each domain. For example, Eukarya includes kingdoms like Animalia, Plantae, and Fungi.

Continuing down the hierarchy, within each Kingdom, organisms are classified into Phyla (plural of Phylum), which group organisms based on major body plans or organizational characteristics. Finally, within each Phylum, organisms are divided into Classes, which further specify groupings based on more specific traits.

This order reflects the increasing specificity and detail of classification, allowing biologists to understand the relationships and characteristics of different organisms more clearly. Other proposed arrangements may misplace these critical levels, leading to confusion about the proper taxonomy of living organisms.