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Hint: Oviparous animals: They are egg-laying, fertilization is internal but the development of the embryo is external. Example. Birds.
Viviparous animals: They give birth to offspring. The fertilization and development of the embryo both occurs inside the female body. Example. Cat
Complete answer:
Additional information:
Some animals are ovoviviparous. Ovoviviparous animals lay eggs but development of the eggs occurs inside the female body. The eggs are hatched inside the female body. Some examples of ovoviviparous animals are sharks, rays, snakes, fishes, and insects.
Note: Some mammals like Echidna (Tachyglossidae) and Platypus (Ornithorhynchus) are oviparous mammals and insects like aphids, Zootoca vivienda, which is a reptile are viviparous.
Viviparous animals: They give birth to offspring. The fertilization and development of the embryo both occurs inside the female body. Example. Cat
Complete answer:
Sr. No. | Oviparous animals | Viviparous animals |
1 | They lay egg- Fertilized or unfertilized | They give birth to their offspring. |
2 | Development of embryos occur outside the body. | Development of embryos occur inside the female body. |
3 | Fertilization is internal or external | Internal fertilization |
4 | Embryo takes nutrition from yolk sac. | Embryo takes nutrition from the mother by placenta. |
5 | Low chances of survival, because eggs are in open environment | High chances of survival because the embryo is safe in the mother's womb. |
6 | Example : Birds, Reptiles, Amphibian, Pisces, Insects etc. | Example: Mammals ( except few) like cats , dogs, humans etc. |
Additional information:
Some animals are ovoviviparous. Ovoviviparous animals lay eggs but development of the eggs occurs inside the female body. The eggs are hatched inside the female body. Some examples of ovoviviparous animals are sharks, rays, snakes, fishes, and insects.
Note: Some mammals like Echidna (Tachyglossidae) and Platypus (Ornithorhynchus) are oviparous mammals and insects like aphids, Zootoca vivienda, which is a reptile are viviparous.
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