Question

why the marsupials produce immature babies?

Answer 1

The short gestation time is due to having a yolk-type placenta in the mother marsupial. Placental mammals nourish the developing embryo using the mother's blood supply, allowing longer gestation times. Like other mammals, the marsupials are covered with hair.

Answer 2

Answer:

Here's ur Answer Mate:-

Marsupial babies are born at an even more immature stage because their rudimentary placentas are comparatively inefficient in nurturing fetuses.

Like monotremes and marsupials, placental mammals feed their babies with milk from their mammary glands.

Hope it helps uh!