Question

Which class name refers to their creeping or crawling mode of locomotion

• A. Class – Reptilia
• B. Class – Amphibia
• C. Class – Aves
• D. Class – Pisces

Answer 1

Answer:

A. Class – Reptilia

Class – Reptilia:

• The class name 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.
• Heart is usually three-chambered, but 4 chambered in crocodiles. 
• Reptiles are poikilotherms.
• Snakes and lizards shed their scales as skin cast.
• Sexes are separate. Fertilisation is internal. 
• They are oviparous and development is direct.

Examples:

• Chelone (Turtle), Testudo (Tortoise), Chameleon (Tree lizard), Calotes (Garden lizard), Crocodilus (Crocodile), Alligator (Alligator). Hemidactylus (Wall lizard)
• Poisonous snakes – Naja (Cobra), Bangarus (Krait), Vipera (Viper)