explain fertilisation in animals?draw diagram
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Fertilization in Animals: The Process of Fertilization in Animals!
The union of the cytoplasm and pronuclei of the male females gametes to form a diploid zygote is known as the fertilization.
External and Internal Fertilization:
Fertilization necessitates discharge of ova and sperms in close proximity. This may be accomplished in water in aquatic animals, or in special cavities of the female, more commonly in land animals.
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In most aquatic animals, such as echinoderms, many fish and amphibians (frogs) both ova and sperms are laid directly into water where they fertilize. This is called external fertilization taking place outside the body of the organism. In other aquatic animals (e.g., cephalopods) and in most terrestrial animals, the male deposits sperms, during copulation, either into the oviduct of the female (as in vertebrates) or into special receptacles called spermathecae (e.g., insects, spiders), so that fertilization takes place inside the body of the organism. This is called internal fertilization.
The union of the cytoplasm and pronuclei of the male females gametes to form a diploid zygote is known as the fertilization.
External and Internal Fertilization:
Fertilization necessitates discharge of ova and sperms in close proximity. This may be accomplished in water in aquatic animals, or in special cavities of the female, more commonly in land animals.
ADVERTISEMENTS:
In most aquatic animals, such as echinoderms, many fish and amphibians (frogs) both ova and sperms are laid directly into water where they fertilize. This is called external fertilization taking place outside the body of the organism. In other aquatic animals (e.g., cephalopods) and in most terrestrial animals, the male deposits sperms, during copulation, either into the oviduct of the female (as in vertebrates) or into special receptacles called spermathecae (e.g., insects, spiders), so that fertilization takes place inside the body of the organism. This is called internal fertilization.
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