On what basis are mammals classified into different groups, and what these groups?
1 Answer
Jul 30, 2017
- Monotremes
- Marsupials
- Placental
Explanation:
- Monotremes
Monotremes are the mammal who lay eggs.
Eg: Duck-billed Platypus, Echidna.
- Marsupials
Marsupials Give birth to undernourished babies.
They doesnt have a placenta .
They keep their babies inside a pouch attached with their stomach where the baby is well-nourished.
Eg: Kangaroo.***
- Placental
Placental mammals consist of the rest of the mammals who nourish their babies in placenta, in the early stage of the babies.
Eg: Humans, Dogs, Cats.
Placenta - is a organ or a lining which enables transportation of Nutrients from mother's body to the baby via Umbli cord.
[ It further injects the faecal matter produced by the baby into mother's blood.*]
