Answer: Phylum, since it includes several classes.
- A Both represent exactly the same level of grouping
- B Class, since it includes several phyla
- C Neither, since they apply to different kingdoms
- D Phylum, since it includes several classes
Correct answer: D. Phylum, since it includes several classes
Explanation: In the taxonomic hierarchy, Phylum is a broader category that may include several Classes, which in turn include several Orders, reflecting decreasing inclusiveness down the hierarchy.
The taxonomic hierarchy narrows from Kingdom (broadest, covering the most organisms but fewest shared traits) down to Species (narrowest, fewest organisms but most shared traits) - every level in between is a progressively more specific subset of the one above it.
Concept context
Biodiversity, taxonomy, binomial nomenclature, the taxonomic hierarchy, and taxonomic aids like herbaria and botanical gardens. The foundational first chapter of NCERT Biology.