What is meant by viviparity?

Viviparity, retention and growth of the fertilized egg within the maternal body until the young animal, as a larva or newborn, is capable of independent existence. The growing embryo derives continuous nourishment from the mother, usually through a placenta or similar structure.

What are Vivipary 3 examples?

Some examples of ovoviviparous animals are sharks, rays, snakes, fishes, and insects. Oviparity is different from ovoviviparity in a way that the eggs in oviparity may or may not undergo internal fertilization but are laid and depend on the yolk sac to get nourished till the time they hatch.

What is viviparity and Oviparity?

Oviparity is generally defined as “any spawning of oocytes (unfertilized) or fertilized eggs” and viviparity is defined as “any mechanism for live-bearing or maintenance of development, by either maternal or paternal parent in or on any part of the body”, while ovo-viviparity straddles both modes [15].

Which is the correct definition of viviparity?

Viviparity may be defined as the birth of offspring without an enveloping egg shell. By way of contrast, oviparity means the extrusion of eggs or offspring that are surrounded at birth with such a membrane. To speak of the first case as the deposition of living young and to say that eggs are laid in the second are

How is ovoviparity similar to vivipary in animals?

Ovoviviparity, ovovivipary, ovivipary, or aplacental viviparity is a mode of reproduction in animals in which embryos that develop inside eggs remain in the mother’s body until they are ready to hatch. This method of reproduction is similar to viviparity, but the embryos have no placental connection with…

How is viviparity different from the other reproductive modes?

Among animals, viviparity is development of the embryo inside the body of the parent, eventually leading to live birth. This is opposed to oviparity which is a reproductive mode in which females lay developing eggs that complete their development and hatch externally from the mother.

Where does the development of a viviparity take place?

Among animals, viviparity is development of the embryo inside the body of the parent, eventually leading to live birth, as opposed to reproduction by laying eggs that complete their incubation outside the parental body.

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