In biological classification, which term describes a group of closely related orders?

In biological classification, the term that describes a group of closely related orders is "class." In the hierarchical system of taxonomy, which organizes living organisms into increasingly specific categories, "class" is situated between "phylum" and "order." A single class can contain multiple orders that share common characteristics and evolutionary traits. This classification helps scientists communicate about and study the relationships between different organisms more effectively.

To provide some context on the other levels of classification: a kingdom encompasses a broad range of organisms and includes multiple phyla, while a phylum consists of various classes that are grouped together based on significant similarities. Additionally, a family is a more specific category that groups related genera within a particular order. Understanding this hierarchy helps clarify how different organisms are related to one another in the grand scheme of biological diversity.