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Notes on Mammals
Question | Answer |
---|---|
Monotremes Young Develop 1 | Lay eggs with a tuff leathery shell. |
Monotremes Young Develop 2 | Incubates eggs. |
Monotremes After "Birth", Young Nourished by | Lack nippples, milk collectors, so their young lick the fur on their mother's mammary glands, where milk is "sweated" out. |
Monotremes Example | Duck Billed Platypus. |
Monotremes Other facts | Monotreme means "one opening." |
Marsupials Young Develop 1 | Young develop for a short time inside mother. |
Marsupials Young Develop 2 | Baby emerges "honey bee sized" and climbs to pouch. |
Marsupials After "Birth", Young Nourished by | And latches on to a nipple inside the pouch, young also develop in pouch. |
Marsupials Example | Possum, Kangaroo, etc. |
Placentals Young Develop 1 | Young Develop for a longer time inside mother's uterus. |
Placentals Young Develop 2 | Young nourished by a placenta thru the umbilical cord. |
Placentals After "Birth", Young Nourished by | After birth, young nurse on mother's nipples. |
Placentals Example | Potbellied Pigs, Whale, Unicorn, Human, etc. |
Placentals Other Facts | After birth, the placenta exits the body. Therefore, the placenta is also called the "After Birth." |