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Difficulty: MediumPrinciples of Classification and Binomial Nomenclature

Arrange the following taxonomic ranks in hierarchical sequence from the most inclusive (broadest rank) to the least inclusive (most specific rank):

  1. 1Kingdom
  2. 2Class
  3. 3Order
  4. 4Family
  5. 5Species

Answer

The correct sequence from most inclusive to least inclusive is: Kingdom, Class, Order, Family, Species.
Biological classification relies on a nested hierarchical system. From the broadest level of organization to the narrowest, the correct arrangement of the listed ranks is Kingdom → Class → Order → Family → Species.

Step-by-Step Solution

1
Identify the broadest taxonomic group among the given items.
Kingdom is identified as the most inclusive rank present.
In the Linnaean hierarchy, Kingdom sits near the top of the classification pyramid above Phylum, Class, Order, Family, Genus, and Species.
2
Arrange the intermediate ranks in descending order of inclusiveness.
Class comes before Order, which is followed by Family.
A Kingdom comprises multiple Phyla, a Phylum comprises Classes, a Class comprises Orders, and an Order comprises Families.
3
Identify the narrowest, most specific rank to complete the sequence.
Species is placed at the end of the sequence.
Species represents the basic unit of biological classification, containing organisms capable of interbreeding.

Key Concept

Hierarchy of Biological Taxonomic Ranks
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Topics

Principles of Classification and Binomial Nomenclature

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