A non-obligate component of hierarchy of categories used by Linnaeus was

Class

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Genus

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Family

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Variety

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Solution

The correct option is D Variety
The 7 obligate taxonomic hierarchy used by Carolus Linnaeus in the descending order is Kingdom → Phylum → Class → Order → Family → Genus → Species.
Since variety doesn't fall in the above category, it is a non-obligate component.
So, the correct option is 'Variety'.

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Similar questions

Assertion [A]: Taxonomic hierarchy includes eight obligate categories.

Reason [R]: Intermediate categories are used to make taxonomic positions more informative as it is independent of any taxon.

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