Final answer:
Sharks with internal egg development and birth of live young are termed ovoviviparous. This reproductive mode is distinct from oviparous and viviparous sharks, which lay eggs outside the body or have a placenta-like connection, respectively.
Step-by-step explanation:
Sharks that retain their fertilized eggs in the oviduct, where the eggs develop into young, are called ovoviviparous. Most shark species are ovoviviparous, a process where the fertilized egg is retained within the mother's body, and the embryo is nourished by the egg's yolk. These eggs hatch inside the mother, and the shark pups are born alive and fully functional. Sharks that retain their fertilized eggs in the oviduct, where the eggs develop into young, are called ovoviviparous. In this reproductive strategy, the fertilized egg is retained in the oviduct of the mother's body, and the embryo is nourished by the egg yolk. The eggs hatch in the uterus, and the young are born alive and fully functional. T
Although ovoviviparity is common, some sharks demonstrate other reproductive methods. Oviparous sharks lay eggs outside the mother’s body, protected by a tough case often called a "mermaid's purse." Viviparous sharks, like tiger sharks and hammerheads, have a more direct nutrient supply from the mother to the growing embryo, resembling mammalian gestation more closely.