Which set of terms correctly lists the major ranks in Organism Classification from broadest to most specific?

• A. Biological Hierarchy
• B. Organism Classification
• C. Taxonomic Levels
• D. Genetic Classification

Answer: (B)

Think about how scientists organize life from the broadest group down to the most specific. The term that names these levels—the grouped categories used to place organisms in a family tree of relatedness—is Taxonomic Levels. It signals the standard set of ranked categories (like domain, kingdom, phylum, class, order, family, genus, species) that show how organisms are related and how the classification becomes more detailed as you go from broad to narrow.

Biological Hierarchy refers more generally to the idea that life is organized in a series of levels, from molecules up to ecosystems, and isn’t specific to the traditional naming of the ranks. Organism Classification describes the act or process of grouping organisms, not the list of the ranks themselves. Genetic Classification focuses on grouping by genetic relationships, which is a method used in modern taxonomy but doesn’t itself denote the standard sequence of broad-to-specific ranks.