What is the primitiveness and higher organization in marsupials?
| November 25, 2020 | education
In marsupials, the placenta is poorly developed, in contrast to placental mammals. Their cub is born underdeveloped and continues its development in a special bag on the mother’s belly.
Compared with oviparous, marsupials do not have a cloaca, into which the genitals and excretory organs merge in oviparous animals.
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