Biology · The Living World · NEET
From lowest to highest category: Genus = Musca, Family = Muscidae, Order = Diptera, Class = Insecta, Phylum = Arthropoda, Kingdom = Animalia. This is exactly the row given in NCERT Chapter 1 (The Living World), Table 1.1. NEET usually asks you to match these ranks, so learn the order carefully.
The Order is Diptera. Muscidae is the Family, not the order. This is the most common mistake. Remember: 'Diptera' means 'two wings' (di = two, ptera = wings), and true flies like the housefly have only one pair of wings. So Order = Diptera, Family = Muscidae.
Class = Insecta. Arthropoda is the Phylum, which is a higher (bigger) group. Insecta is a smaller group inside Arthropoda. So the housefly is a member of Class Insecta, and Class Insecta sits inside Phylum Arthropoda.
Muscidae is a Family (a smaller group of related genera). Diptera is an Order (a larger group of related families). In the ranking, Family comes below Order. So Muscidae (family) is inside Diptera (order). Think: many families make one order.
Because animal family names are made by adding the suffix '-idae' to the genus name. The genus of housefly is Musca, so the family is Musca + idae = Muscidae. This '-idae' ending is used only for animal families (rule of ICZN), which is a handy clue in NEET matching questions.
Ascending (small to big): Species (domestica) -> Genus (Musca) -> Family (Muscidae) -> Order (Diptera) -> Class (Insecta) -> Phylum (Arthropoda) -> Kingdom (Animalia). As you go up, the group gets bigger but the shared features become fewer and more general.
Match Column-I with Column-II for housefly classification and select the correct option. Column-I: A. Family, B. Order, C. Class, D. Phylum. Column-II: (i) Diptera, (ii) Arthropoda, (iii) Muscidae, (iv) Insecta.
Try the real previous-year questions from this chapter — each with the answer and a full solution.
Musca domestica. 'Musca' is the genus name (capital first letter) and 'domestica' is the species name (small letter). Both are written in italics.
Family Muscidae. The name is formed by adding '-idae' to the genus name Musca.
Order Diptera. Diptera means 'two wings' and includes flies and mosquitoes, which have only one pair of wings.
Kingdom Animalia, because the housefly is a multicellular animal that eats food (heterotroph) and has no cell wall.
It is a direct NCERT Table 1.1 example and has appeared as a matching-type PYQ (NEET 2016). Learning it teaches you the full taxonomic hierarchy through one easy, real organism.
