Question

Which of the following are correctly matched with respect to their taxonomic classification?
A) Flying fish, cuttlefish, silverfish-Pisces
B) Centipede, millipede, spider, scorpion-Insecta
C) House fly, butterfly, tsetse fly, silverfish- Insecta
Spiny anteater, sea urchin, sea cucumber-Echinodermata

Answer 1

Hint: They are the hexapod invertebrates belonging to the phylum of Arthropoda having chitinous exoskeleton with three-part body which includes head, thorax and abdomen. They are the most diverse group of animals.

Complete Answer:
- Flying fish comes under the category of class Actinopterygii whereas cuttlefish belongs to the class of Cephalopoda from the phylum Mollusca and on the other hand silverfish is an insect that comes under the phylum Arthropoda.
- Centipede belongs to the class of Chilopoda and millipede comes under Diplopoda class. Spider and scorpion belong to the Arachnida class.
- So, they can't all be insecta. 3rd option i.e. house fly, butterfly, tsetse fly, silver fish they all belong to the phylum insecta. This category of phylum includes the organisms which are having 3 pairs of legs and this is the characteristic feature of the insects. Moreover, they have two antennae and 2 pairs of wings with a segmented body.
- Option 4th in which spiny anteater belongs to the family of mammals, sea urchin belongs to class Echinoidea whereas sea cucumber belongs to Holothuroidea class under phylum Echinodermata. So, in this only the sea cucumber belongs to Echinodermata.

Thus, the correct answer is option C. i.e., House fly, butterfly, tsetse fly, silverfish-Insecta

Note: All the insects hatch from the eggs and their growth is limited by the inelastic exoskeleton. They undergo four stages of metamorphosis. House fly, butterfly, tsetse fly, silverfish all are the insecta with 3 pairs of legs and one pair of antennae.