NTA Abhyas NEET2020BotanyAnimal KingdomPractice
Which one of the following is a matching set of the class and some of its main distinguishing features, classification, and examples?
Options
- ACyclostomata - Division Agnatha; 6-15 pairs of gill slits, endoskeleton bony, Example: Myxine
- BReptilia - Division Gnathostomata; epidermal scutes, endoskeleton body, Example: Hemidactylus
- CAmphibia - Super-class Tetrapoda, cloaca as a common opening for the alimentary canal, urinary tract and repro
- DChondrichthyes - Super-class Pisces; gill slits without operculum, exoskeleton cartilaginous, Example: Carchar
Correct answer
B. Reptilia - Division Gnathostomata; epidermal scutes, endoskeleton body, Example: Hemidactylus
Step-by-step solution
Reptiles are classified under division Gnathostomata and superclass Tetrapoda. The class name Reptilia refers to their creeping or crawling mode of locomotion (Latin, repere or reptum, to creep or crawl). They are mostly terrestrial animals and their body is covered by dry and cornified skin, epidermal scales, or scutes. They do not have external ear openings. Tympanum represents ear. Limbs, when present, are two pairs. The heart is usually three-chambered, but four-chambered in crocodiles. Reptiles are poikilother