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Distinguish between viviparous and oviparous animals

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Distinguish between viviparous and oviparous animals
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Sia ? 4 years, 7 months ago

Oviparous Animals Viviparous Animals
What it means
Lay unfertilized or fertilized eggs Give birth to young ones while their development takes place within the body of the female counterpart
Fertilization-type
Can either be external or internal Internal
Zygote development
Embryo development occurs outside the embryo Embryo development occurs inside the embryo
Supply of nutrients to the embryo that is developing
Embryo obtains nutrients from Egg yolk Embryo obtains nutrients from the mother
Chances of survival
Less. This is because egg laying occurs in an external environment High as nourishment and care is provided inside the womb of the mother
Some examples
Fish, amphibians, insects, birds, reptiles Humans, dogs, elephants, cats etc
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