Female sperm storage is an integral stage in the reproductive process for many animals with internal fertilization.
22.
It is not known how internal fertilization occurs, as the male frog has no obvious intromittent organ.
23.
Most animals that live outside of water, however, must transfer sperm from male to female to achieve internal fertilization.
24.
As with other mammals, human reproduction takes place as internal fertilization by implantation, gestation then occurs within the female's uterus.
25.
The species usually have both male and female individuals, but very rarely reproduction may be parthenogenic, caused by internal fertilization.
26.
Black rockfish breed via internal fertilization, meaning that female members of the species store sperm until the development of the eggs.
27.
Fertilization is external in most species, but platyctenids use internal fertilization and keep the eggs in brood chambers until they hatch.
28.
They differ from suborder Cryptobranchoidea as the angular and prearticular bones in their lower jaws are fused, and all members use internal fertilization.
29.
Being air-breathing animals, the living arachnids use internal fertilization, which is direct in some species, in other words the males'genitalia make contact with the females '.
30.
In ovoviviparous fish the eggs develop inside the mother's body after internal fertilization but receive little or no nourishment directly from the mother, depending instead on the yolk.
