As we have learnt earlier that in Viviparous Animals the baby develops inside the mother's body or uterus. It helps to reduce stress in human. Oviparity and viviparity are two distinct modes of reproduction that entail both advantages and disadvantages, of which each may differ in their applicability to particular species. What Are The Advantages And Disadvantages Of Oviparity Although this undoubtedly happens, most species seem to have some sort of behavioral pattern to increase their chances of finding a suitable substratum. Internal fertilization also enhances the fertilization of eggs by a specific male. The Latin terminology for viviparous is also known as Viviparus. This means, life-bearing or to bring forth alive. Animals who can give birth to the younger ones are called viviparous animals. 8). Gastropods of lower phylogenetic levels are generally mass spawners with either short-lived lecithotrophic or planktotrophic larvae. The Process of Ovoviviparity in Ovoviviparous Animals, In the case of ovoviviparous animals, the fertilization of the eggs occurs internally due to mating between the male and the female sexual organs. In such species, early larval development is nourished at the natal site, but advantage is also taken of the rich food resources available in the plankton near the end of larval development, and there is opportunity for pelagic dispersal as well. The eggshells are responsible for keeping the Embryo protected inside from predators. The union of the sperm and the egg produced by the male and female organisms occurs outside the female body. They also learn how the gamers fuse to form a zygote that later developed into a baby inside the mother's body. A female Cypraea talpa tending her egg mass (pustulose, bilobed mantle spread over the shell): North Maret Island, Kimberley Bioregion. Asexual reproduction is also common and fragmentation can occur frequently for many branching species. After the sperm reaches the egg, fertilization can then take place. After the development of a full-grown fetus in the womb, the baby is delivered. Both oviparity (some Diploglossus) and viviparity (Celestus and some species of Diploglossus) occur.