The heart of a crocodile is

Most favourable land adaptation for reptiles is:

Which of the following statements are correct?
$I.$ Venom of cobra is neurotoxic.
$II.$ Venom of sea snake is neurotoxic.
$III.$ Venom of viper is haemotoxic.

Statement $A$: The name 'Reptilia' is derived from the Latin word 'repere' or 'reptum',which means 'to creep' or 'to crawl'.
Statement $B$: Since they creep or crawl,it is not necessary that all animals of the class Reptilia are limbless.

Which of the following is the most significant adaptation in reptiles for terrestrial life?

Wall lizard can run efficiently on vertical surfaces because of