The Union of the Sperm and the Egg Produced By the Male and Female Organisms Occurs Outside the Female Body. Oviparous animals lay eggs that develop and hatch into young individuals. The skin of the caecilian is folded, giving it the same ringed look as an earthworm. Oviparous animals lay eggs (e.g. The table below shows main difference between Oviparous and viviparous animals. This is the reproductive method of most fish, amphibian, reptiles,all bird and the monotreme. birds), while viviparous animals give birth to their young ones (e.g. Therefore, they do not lay eggs. In oviparous animals mother lays eggs outside its body.The young one of the animal develops inside the egg.When the development of the young one inside the egg is complete, the egg shell breaks open and an alive young one comes out of it.This is called hatching. While the main similarity between oviparous and viviparous animals are both will produce offspring for the survival of the species.ReferenceBlackburn, D. G. (1999). The article provides detailed insights into the difference between oviparous and viviparous animals in points as well as a comparison chart. Oviparous are animals that lay eggs with little or no other embryonic development within the mother. Examples of some terrestrial viviparous animals include humans, dogs, cats, tiger, lions, chimpanzee and so on. Some caecilians are oviparous (egg-layers), some viviparous (livebearers), and a few are ovoviviparous (meaning that the eggs hatch inside the mother and the young live in her until maturity). Those animals which lay eggs from which young ones are hatched later on, are called oviparous animals. The reproduction in animals solutions are provided here to help class 8 students to get knowledge on the topic and to prepare for their examination effectively. Whereas, viviparous animals are immediately born as living young individuals. Oviparous animals. humans, cats, dogs). Difference Between Viviparous, Oviparous and Ovoviviparous Animals . Viviparous animals, on the other hand, experience some changes while they are inside the womb. What Are Oviparous Animals? The development of the eggs takes place inside the mother’s body. The main difference between oviparous and viviparous animals is that oviparous animals do not undergo any embryonic development inside the mother whereas viviparous animals develop into a young animal inside the mother. The methods of the development of the young ones are the main difference between oviparous and viviparous animals. Oviparous animals are those whose embryos do not change while inside the womb of their mothers. Ovoviviparous animals produce eggs, but instead of laying, the eggs develop within the mother's body. Oviparous animals refer to animals that lay eggs that mature and hatch after being expelled from the body. Oviparous Animals. After the ovum and the sperm meet, the ovum become fertilized and gives rise to an embryo that develops inside the egg. The main difference between oviparous and viviparous animals is that oviparous animals do not develop inside of their mother, while viviparous animals experience many changes within their mother. Some aquatic organisms are also viviparous; these include different species of sharks, dolphins, whales, sea otters and so on. It can be confusing for people to figure out the differences between oviparous and viviparous animals. In the Animal Kingdom, External Fertilization is a Common Reproductive Strategy. NCERT solutions Class 8 Science Chapter 9 Reproduction in animals is a very crucial resource for the CBSE Class 8 students. In contrast, viviparous animals are born as live young individuals. 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