Question

why internal fertilization is more advance than external fertilization?


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Answer 1

1.internal fertilization has the advantage of protecting the fertillized egg from dehydration on land.

2.the embryo is isolated within the female,which limits predation on the young.fewer offspring are produced through this method,their survival rate is higher than external fertilization.

the external fertilization usually occurs in aquatic environment.where both eggs and sperm are released in the same area.externally fertilization happening animals laying several eggs at a time.

Answer 2

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External fertilization is primitve and internal fertilization is advance.

Internal fertilization has the advantage of protecting the fertilized egg from dehydration on land. The embryo is isolated within the female, which limits predation on the young. Internal fertilization also enhances the fertilization of eggs by a specific male. Even though fewer offspring are produced through this method, their survival rate is higher than that for external fertilization.

External fertilization is not advanced because it occurs outside the body of the organisms, mostly in water in most aquatic organisms so that a large number of gametes are wasted. Moreever, the offsprings are not protected from predators and their survival is threatened.