Oviparous means that the animal lays eggs that develop and hatch outside the mother's body. In reptiles, turtles are an example of oviparous animal.
Ovoviviparous means that an animal lays egg but...
Because they are coldblooded and are usually scaled. If you mean the etymology, reptiles come from late 14th century word reptilis meaning "creeping, crawling," from rept-, which means "to crawl,...
