7 public questions tagged with this topic.
A genus is a group of closely related species. Species within the same genus share more characters with one another than with species of other genera.
Ref: NCERT Class 11 Biology Chapter 1: The Living World Systematics and Taxonomy Concepts
A family is a group of related genera. For example, the genera Panthera and Felis are included in the family Felidae.
Ref: NCERT Class 11 Biology Chapter 1: The Living World Taxonomic Categories - Family Order Class Phylum Kingdom
A genus is an aggregate of closely related species that share more characters with one another than with species of other genera.
Ref: NCERT Class 11 Biology Chapter 1: The Living World Taxonomic Categories - Family Order Class Phylum Kingdom
Species is the lowest taxonomic category among the given options. Members of a lower taxon share more common characteristics than members of a higher taxon.
Ref: NCERT Class 11 Biology Chapter 1: The Living World Taxonomic Categories - Species and Genus
Species is the lowest category among the given options. Members of a lower taxon share more common characteristics than members of a higher taxon.
Ref: NCERT Class 11 Biology Chapter 1: The Living World Taxonomic Categories - Species and Genus
Taxonomic hierarchy uses primary obligate ranks — Kingdom, Phylum, Class, Order, Family, Genus, Species — but codes recognize secondary ranks for refined phylogeny. Tribe (tribus) is inserted between family and genus, often with subtribe below it. A tribe assembles closely related genera sharing derived morphological, anatomical, and molecular characters that differentiate them from other genera in same family. For example, Fabaceae tribe Trifolieae unites Trifolium, Medicago and allies. Recognition of tribe improves resolution of evolutionary relationships without over-inflating family numbers. This pattern is frequently tested in NCERT-based competitive examinations requiring precise recall of taxonomic hierarchy principles.
Ref: ICN Article 4.1 Secondary Ranks: tribe between family and genus; Campbell Biology 12th ed., Ch. 26 Systematics
As we move from lower to higher taxonomic categories, the number of shared characteristics decreases. Since a genus is a lower taxonomic category than a family, the closely related species within a single genus share a significantly higher number of common characters than the various related genera grouped together within a family.
Ref: NCERT Class 11 Biology
