Subkingdom vs. Infrakingdom: Know the Difference
By Shumaila Saeed || Updated on December 29, 2023
A subkingdom is a major subdivision within a kingdom of organisms, while an infrakingdom is a further division below a subkingdom, indicating a more specific grouping within the biological hierarchy.
Key Differences
A subkingdom represents a primary division within a biological kingdom, categorizing a broad range of organisms sharing fundamental characteristics. In contrast, an infrakingdom is a more specific categorization within a subkingdom, detailing a narrower group of organisms that share more particular traits.
Shumaila Saeed
Dec 29, 2023
While subkingdoms help in broadly organizing the diversity of life into large, distinct groups, infrakingdoms delve into finer details, allowing for a more nuanced classification. This makes infrakingdoms particularly useful for identifying and studying organisms with closely related characteristics.
Shumaila Saeed
Dec 29, 2023
In terms of hierarchy in the biological classification, a subkingdom stands just below a kingdom, making it one of the highest levels of categorization. An infrakingdom, however, sits below a subkingdom, indicating a lower, more specialized level in the taxonomic ranking.
Shumaila Saeed
Dec 29, 2023
Subkingdoms encompass a wider variety of life forms, reflecting major differences in fundamental biological traits. Infrakingdoms, on the other hand, typically group organisms that are more similar to each other, highlighting more specific evolutionary relationships.
Shumaila Saeed
Dec 29, 2023
The classification into subkingdoms often reflects broader evolutionary paths, while infrakingdoms can indicate more recent evolutionary divergences within these paths. This helps scientists understand both the macro and micro scales of evolutionary history.
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Dec 29, 2023
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Comparison Chart
Level of Classification
Major division within a kingdom
Further division within a subkingdom
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Diversity of Organisms
Encompasses a wide variety of life
Groups more closely related organisms
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Evolutionary Significance
Reflects broader evolutionary paths
Indicates more specific evolutionary relationships
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Subkingdom and Infrakingdom Definitions
Subkingdom
A broad taxonomic category below kingdom.
The subkingdom Parazoa includes simple animals like sponges.
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Infrakingdom
A taxonomic category below a subkingdom.
The infrakingdom Angiospermae includes all flowering plants.
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Subkingdom
A group in biological classification denoting major evolutionary branches.
The subkingdom Eumetazoa comprises all animals with true tissues.
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Dec 29, 2023
Infrakingdom
A classification level used for more specific grouping within a subkingdom.
In the subkingdom Eumetazoa, the infrakingdom Bilateria groups animals with bilateral symmetry.
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Dec 29, 2023
Subkingdom
A rank in the biological hierarchy used to distinguish between fundamentally different forms of life.
Bacteria and Archaea are separated into different subkingdoms.
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Infrakingdom
A rank in taxonomy for categorizing organisms with closely related characteristics.
The infrakingdom Deuterostomia includes chordates and echinoderms.
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Subkingdom
A primary division within a biological kingdom.
Plants and animals are categorized into different subkingdoms due to their distinct characteristics.
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Dec 29, 2023
Infrakingdom
A subdivision in biological classification denoting a narrower set of organisms.
The infrakingdom Gymnospermae encompasses non-flowering seed plants.
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Dec 29, 2023
Subkingdom
A level in taxonomy used to classify a large and diverse group of organisms.
The subkingdom of Embryophyta includes all land plants.
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Dec 29, 2023
Infrakingdom
A finer categorization within the hierarchy of life forms.
In the subkingdom of plants, the infrakingdom Streptophytina includes land plants and certain green algae.
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Dec 29, 2023
Subkingdom
A taxonomic category of related organisms constituting a major division of a kingdom.
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Oct 19, 2023
Infrakingdom
(taxonomy) A taxonomic category sometimes inserted below subkingdom.
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Subkingdom
(taxonomy) A taxonomic category below kingdom and above superphylum.
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Subkingdom
(uncommon) A kingdom that is part of another kingdom, ruled by a subking.
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Subkingdom
One of the several primary divisions of either the animal, or vegetable kingdom, as, in Zoology, the Vertebrata, Tunicata, Mollusca, Articulata, Molluscoidea, Echinodermata, Cœlentera, and the Protozoa; in botany, the Phanerogamia, and the Cryptogamia.
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Oct 19, 2023
Subkingdom
(biology) a taxonomic group comprising a major division of a kingdom
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Repeatedly Asked Queries
What's the purpose of using subkingdoms in biological classification?
Subkingdoms help organize and classify organisms into increasingly specific groups, aiding in the study of biodiversity.
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Dec 29, 2023
What is an infrakingdom?
An infrakingdom is a further division within a subkingdom.
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Dec 29, 2023
How are subkingdoms named?
Subkingdoms are typically named based on shared characteristics or evolutionary relationships among the organisms within them.
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Dec 29, 2023
Why are infrakingdoms useful in taxonomy?
Infrakingdoms help refine the classification of organisms, making it easier to study and understand the diversity of life.
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Dec 29, 2023
Is the use of infrakingdoms consistent across different taxonomic systems?
Taxonomy can vary, so not all classification systems may include infrakingdoms, but they are used in many.
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Dec 29, 2023
What is a subkingdom?
A subkingdom is a major subdivision within a biological kingdom.
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Dec 29, 2023
Are subkingdoms universally accepted in taxonomy?
Taxonomy can vary, so not all taxonomists may use subkingdoms; however, they are commonly employed in many classification systems.
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Dec 29, 2023
How does an infrakingdom differ from a subkingdom?
An infrakingdom represents a further subdivision within a subkingdom, providing more specific classification.
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Dec 29, 2023
Provide an example of an infrakingdom.
Bilateria is an infrakingdom within the subkingdom Eumetazoa, encompassing animals with bilateral symmetry.
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Dec 29, 2023
Do infrakingdoms apply to both plants and animals?
Infrakingdoms are primarily used in animal taxonomy but may not be as common in plant taxonomy.
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Dec 29, 2023
How is a subkingdom different from an infrakingdom?
A subkingdom is a broader category than an infrakingdom, which is more specific.
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Dec 29, 2023
Can an organism belong to multiple subkingdoms simultaneously?
No, an organism is usually classified into one subkingdom based on its most defining characteristics.
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Dec 29, 2023
How are infrakingdoms named?
Infrakingdoms are typically named based on distinctive characteristics or evolutionary relationships shared among the organisms within them.
Shumaila Saeed
Dec 29, 2023
Can an organism belong to multiple infrakingdoms at once?
No, an organism is usually classified into one infrakingdom based on its most defining characteristics.
Shumaila Saeed
Dec 29, 2023
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About Author
Written by
Shumaila SaeedShumaila Saeed, an expert content creator with 6 years of experience, specializes in distilling complex topics into easily digestible comparisons, shining a light on the nuances that both inform and educate readers with clarity and accuracy.
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