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Difficulty: MediumTaxonomy and Classification

A biological archive organizes specimens using hierarchical classification. Arrange the following taxonomic ranks in sequence from the broadest (most inclusive) category to the narrowest (most specific) category.

  1. 1Domain
  2. 2Phylum
  3. 3Class
  4. 4Order
  5. 5Genus

Answer

The correct sequence from broadest to narrowest category is Domain, Phylum, Class, Order, Genus.
Biological classification structures living organisms into a nested hierarchy from broadest to narrowest: Domain, Kingdom, Phylum, Class, Order, Family, Genus, and Species. Following this standardized ranking, Domain is the most inclusive, followed by Phylum, Class, Order, and finally Genus as the most specific category in the provided list.

Step-by-Step Solution

1
Identify the broadest and most inclusive taxonomic level among the items.
Domain is placed first.
Domain is the highest level of biological classification in the three-domain system.
2
Identify the next broadest category below kingdom/domain.
Phylum is placed second.
Phylum ranks directly below kingdom and encompasses organisms sharing general anatomical architecture.
3
Identify the rank that directly subdivides a phylum.
Class is placed third.
Class sits below phylum and contains one or more related orders.
4
Identify the rank that directly subdivides a class.
Order is placed fourth.
Order sits below class and contains one or more related families.
5
Identify the most specific taxonomic category remaining in the list.
Genus is placed fifth.
Genus ranks below family and directly above species, making it the most specific rank provided.

Key Concept

Standard Linnaean taxonomic hierarchy ordering from broadest (most inclusive) to narrowest (most specific)
Estimated Time:1m 0s
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Topics

Taxonomy and Classification

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