Biology · The Living World · NEET
Learn it from smallest group to biggest: Species = sapiens, Genus = Homo, Family = Hominidae, Order = Primata (also written Primates), Class = Mammalia, Phylum = Chordata, Kingdom = Animalia. So the scientific name Homo sapiens tells you only the last two levels: genus Homo and specific epithet sapiens. NEET can ask any single level, so memorise all seven.
The order of humans is Primata (Primates). This is the most commonly confused point. Mammalia is the CLASS, not the order. Remember the fixed rank sequence: Species, Genus, Family, ORDER, CLASS. Order comes just above family and just below class. So order = Primata, class = Mammalia.
Humans belong to the family Hominidae. A family is a group of related genera. Do not mix it up with Homo (that is the genus) or Primata (that is the order). NCERT-style tables list it clearly as Family: Hominidae.
Binomial nomenclature (given by Carolus Linnaeus) uses only two words to NAME an organism: the genus name (Homo) and the specific epithet (sapiens). But CLASSIFICATION places that organism into a full ladder of seven categories. The name is short; the classification is the complete address. NEET tests both, so know the two-word name AND the seven-step hierarchy.
Homo is the GENUS. sapiens is the specific epithet (species part). In Homo sapiens, the first word (Homo, capital H, italic) is the genus, and the second word (sapiens, small s, italic) is the specific epithet. Never write it as Homo Sapiens with a capital S — that breaks the rules of nomenclature.
Use a mnemonic for the seven ranks (ascending: small to big): Species, Genus, Family, Order, Class, Phylum, Kingdom. One easy line: 'Silly Girls Fight Over Cute Puppies (Kingdom)'. Fill in the human names: sapiens, Homo, Hominidae, Primata, Mammalia, Chordata, Animalia.
Try the real previous-year questions from this chapter — each with the answer and a full solution.
Homo sapiens. Homo is the genus name (capital H) and sapiens is the specific epithet (small s). Both words are italicised, or underlined separately when handwritten.
Species (sapiens) → Genus (Homo) → Family (Hominidae) → Order (Primata) → Class (Mammalia) → Phylum (Chordata) → Kingdom (Animalia).
Phylum Chordata. Vertebrata is a sub-phylum (a group inside Chordata), not the main phylum. For NEET, humans belong to Phylum Chordata under Kingdom Animalia.
Yes. The class of Homo sapiens is Mammalia, because humans have mammary glands, hair, and give birth to young ones. But remember the order is Primata, not Mammalia.
NEET repeatedly tests the full taxonomic hierarchy using example organisms (human, housefly, mango, horse). Knowing where each rank word (genus, family, order, class) sits — and the human names for each — helps you answer match-the-column and 'which is the order/family' questions quickly.
