No, it is a called a marsupium.
The purpose of the marsupium is to protect the joey until it is old enough to live independently of its mother.
Kangaroos do have amniotic sacs. The amniotic sac come from the amniotic egg, an evolutionary adaptation that enabled the colonization of land during the development of life.
Amniotic sacs are found in reptiles, birds, and mammals, but not fish and amphibians.
Yes, yes in fact they do.
The amniote egg allowed amphibians to place their eggs on dry land instead of in water. The water, amniotic fluid, was in the egg.
No. As they are marsupials, kangaroos give birth to live young.
No they do not. The organisms that are classified as Amniota are birds, mammals, and reptiles. There organisms are believed to come from a primitive amniote in the precambrian era. The ancestor of the primitive amniote is an early tetrapod. This ancestor gave rise to ampbibians as well as the primitive amniote (which gave rise to mammals, reptiles, and birds). An Aminote just basically means that the organism has extraembryonic membranes (ie-allanotitic membrane, choronic membrane, yolk sac, and amniotic membrane).
The Australian Bearded Dragon lay amniotic eggs. Their offspring are covered in amniotic gel for protection.
they have babies called Joeys.
Kangaroos are mammals, and marsupials, which means they are not born from eggs. The young emerge from the birth canal and crawl up to the pouch where they continue their development. The only mammals hatched from eggs are monotremes, which include just platypuses and echidnas.
Reptiles, mammals, and birds lay amniotic eggs, which contain a yolk to nourish the developing organism. Eggs are used to protect the organism as it develops, and the egg also aids in gas and energy exchange.
No, the young are born, but then crawl into a pouch where they continue developing.
An amniote is any of a variety of types of vertebrate which have an amnion - the sac in which an embryo is suspended - this includes mammals, birds, and reptiles.
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An anamniote is any animal which is not an amniote.
The cast of The Amniote - 2009 includes: Chad Brummett Courtney Cunningham as C.C. Emily Villela as Stephanie