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external fertilization
Platypus fertilisation occurs internally.
Internal fertilization and external fertilizationinternal means When the fusion of the male and female gamete occurs within the female genital tract it is called internal fertilization. This type of fertilization occurs in all terrestrial animals both oviparous and viviparous. Reptiles, Birds and mammals show internal fertilization external fertilizationThe fusiri of the gametes occurs outside the body of the animal and is common in aquatic animals. In bony fishes, frogs, echinoderms the sperms and ova are released into the water and their union occurs by Chromosome number of few chance. Since fertilization occurs outside the body of the animal externally, this method is called external fertilization.
External fertilization occurs when sperm and eggs unite in the open, rather than within specialized organs during internal fertilization. Turtles, eagles, and dogs most definitely undergo internal fertilization. Mosquitoes and houseflies, on the other hand, undergo external fertilization.
They Have Internal Fertilization
external fertilization is external
External fertilization and development
external fertilization
External!External fertilization takes place in fishes. This means that the sperm cell of a male is linked together with the egg cell of a female in the external bodies of the individual fish.
Salmon use external fertilization
Clams utilize external fertilization.
External Fertilization