Difference Between Oviparous and Viviparous Animals

Oviparous Animals

Such animals that lay their eggs to give birth to their young ones are known as Oviparous animals. The later embryonic development does occur in the mother’s body. The phenomena of this process are termed Oviparity, which is generally followed by birds and fishes.

oviparous animals

Viviparous Animals

Such animals in which the whole process of embryonic development takes place inside the mother’s body of organisms, and then they give birth to the young ones or their offspring are known as Viviparous animals. The phenomenon is termed Viviparity, which is generally followed by mammals.

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Difference Between Oviparous and Viviparous

Examples

A few of the common oviparous are hens, birds, lizards, snakes, penguins, butterflies, octopuses, ducks, fishes, frogs, etc.
A few of the common viviparous are humans, giraffes, bears, sharks, salamanders, cattle, a few species of sharks, frogs, and marine animals.

Fertilization

In the process of oviparity, the type of fertilization may be internal or external, however, the young ones are always hatched out of the egg.
Viviparity is exclusionary through internal fertilization, which means viviparous animals perform internal fertilization only.

Common in

Amphibians, fishes, reptiles, and birds are the common oviparous. Moreover, it is also prevailing in some invertebrates such as insects.
It is common in mammals and a few reptiles.

Zygote development

The development of the zygote occurs outside the mother’s body in oviparous animals.
In viviparous animals, the development of the zygote occurs within the mother’s body.

Nutrients

The developing embryo gets the nutrients from the egg yolk.
The developing embryo gets the nutrients within the womb through the placenta or similar structures.

Persistence possibilities

The possibility of persistence or survival of the young ones becomes less as there is a lot of risk for the eggs lying in an outer environmental area.
In the case of viviparous, the chances of survival rates are comparatively higher as the young ones are guarded within the mother’s body where they are developing and therefore even ample nutrients are also provided to them.

Protective layer

The eggs of oviparous animals are protected by the hard covering known as shells that guard the developing embryo from any sort of external shock.
As the growing embryo is inside the mother’s body, which only itself acts as the protective layer, however, no other hard shell is needed to cover it.

Reproduction time

The time of the reproduction may vary with the type of species and the favorable conditions such as climate, availability of food, surroundings, etc., for the growing embryo.
Viviparous are the one who can reproduce at any time of the year, as they provide nutrients through the reserve fat present in the body.

Parental role

Oviparous take care of their eggs by providing them the proper heat for growth and later on these animals even feed their young ones.
Some viviparous take care of their young ones up till a certain time, while some may leave them after giving birth.

Risk to the mother

In the oviparous, the mother does not have any direct connection with the growing embryo, so there is less or no risk to them.
In the matter of the viviparous, as the mother is giving birth to their young ones, so the life of the mother is at risk.

Quick Comparison: Oviparous Vs Viviparous

Oviaparous Animal Viviparous Animals
This group of animals are referred to the one that produce eggs to give birth to their yung ones, although the hatching, maturation of the young ones occur outside the female body. Viviparous are the group of animals that give birth to their young ones, when theyhave completed their embryonic development and the time of this development may vary from one animal to other.
Some of the common oviparous are hens, birds, lizards, snakes, penguins, butterflies, octopus, duck, fishes, frogs, etc. Some of the common viviparous are the humans, giraffes, bears, sharks, salamanders, cattle's, few species of the sharks, frogs and marine animals.
In the oviparous animals that follows the process of oviparity, the type of fertilization may be internal or external, however the young ones are always hatched out of an egg.In the viviparous animals that follow the process known as viviparity which is exclusionary through the internal fertilization only.

Oviparity is common in amphibians, fishes, reptiles and birds are the common oviaprous. Moreover, it is also prevailing in the some invertebrates such as insects.Viviparity is common in mammals and few reptiles.
Zygote development (maturation) of the oviparous occurs outside the mother's body. In viviparous animals, the development of zygote occurs within the mother's body.
Nutrients to developing embryo is provided from the egg yolk. In case of viviparous the developing embryo gets the nutrients within the womb through the placenta or similar structures.
The possibilities of persistence or survival of the young ones becomes less as there is a lot of risk for the eggs lying in an outer environmental area. In the case of viviparous the chances of survival rates are comparativley higher as the young onse are guarded within the mther's body where they are developing and therefore even ample of nutrients is also provided to them.
The eggs of an oviparous animals are protected by the hard covering known as shells that guard the developing embryo from any sort of external shock. In the viviparos, as the growing embryo is inside the mothers body, which only itself act as the protective layer, however no other hard shell is needed to cover.
Reproduction time of the oviparous may vary with the type of species and the favourable conditions such as climate, availability of food, surroundings, etc., for the growing embryo. Viviparous are the one who can reproduce at any time of the year, as they provide nutrients through the reserve fat present in body.
Parental role of the oviparous is unique in its own way as they take care of their eggs by providing them the proper heat for the growth and later on these animals even feed their young ones.In some of the viviparous, care of their young ones is done uptil certain time, while some may leave them (child) after giving birth.
Risk to the mother in casket of the oviparous is less as thye does not have any direct connection with the growing embryo, so there less or no risk to them.In the matter of the viviparous, as the mother are giving birth to their young ones, so the life of the mother are at risk.

The Bottom line

The diversity of the world is unhidden to us, of course, there is more to explore the living and non-living as well. Although, the living one who is known to us to date has been found to give birth to the next generation to perform the continuation of their existence.

This article was dedicated to the Oviparous and the Viviparous types of animals, where the former type is known for laying eggs to give birth to their young ones, while the latter is identified as the one who gives direct birth to their young ones. The two crucial terms are a matter of discussion as they keep the progression of life going.

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