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Why are koalas called marsupials?
Koalas are called marsupials, and not bears, because that is what they are - marsupials. They are not related to bears in any way; and bears are placental mammals, not marsupials. Like most (not all) marsupials, koalas have a pouch in which to keep their young. Most marsupials, including kangaroos, wallabies, possums, bandicoots and koalas, share this feature, but some marsupials such as the numbat have just a rudimentary flap of skin to protect the joeys. Like other marsupials, koala joeys are characterised by being extremely small and undeveloped at birth. At birth, they take a long, arduous journey from the birth canal, driven purely by instinct, grabbing hold of the mother marsupial's fur to reach the pouch. Upon reaching the pouch, they latch onto a teat which swells in their mouth to prevent them from being accidentally dislodged during the mother's movements. There they stay for months, to complete their development. Female koalas, like other marsupials, have two vaginas, or what are called paired lateral vaginae. These are for the purpose of transporting the sperm to the womb, but there is a midline pseudovaginal canal for actually giving birth. As well as two vaginas and two uteruses, female marsupials have two fallopian tubes and two cervixes. Male koalas are like most male marsupials (except for the largest species, the Red Kangaroo, Eastern Grey and Western Grey Kangaroos), in that they have a bifurcated, or two-pronged penis, to accommodate the females' two vaginas.
Why are koalas marsupials?
Koalas are called marsupials, and not bears, because that is what they are - marsupials. They are not related to bears in any way; and bears are placental mammals, not marsupials. Like most (not all) marsupials, koalas have a pouch in which to keep their young. Most marsupials, including kangaroos, wallabies, possums, bandicoots and koalas, share this feature, but some marsupials such as the numbat have just a rudimentary flap of skin to protect the joeys. Like other marsupials, koala joeys are characterised by being extremely small and undeveloped at birth. At birth, they take a long, arduous journey from the birth canal, driven purely by instinct, grabbing hold of the mother marsupial's fur to reach the pouch. Upon reaching the pouch, they latch onto a teat which swells in their mouth to prevent them from being accidentally dislodged during the mother's movements. There they stay for months, to complete their development. Female koalas, like other marsupials, have two vaginas, or what are called paired lateral vaginae. These are for the purpose of transporting the sperm to the womb, but there is a midline pseudovaginal canal for actually giving birth. As well as two vaginas and two uteruses, female marsupials have two fallopian tubes and two cervixes. Male koalas are like most male marsupials (except for the largest species, the Red Kangaroo, Eastern Grey and Western Grey Kangaroos), in that they have a bifurcated, or two-pronged penis, to accommodate the females' two vaginas.
Are there any features unique to marsupials except the pouch?
In a way, yes. The young marsupial (usually referred to as a joey, regardless of species) is born exceedingly undeveloped - even more helpless than a baby mouse. They make their arduous journey to the mother's pouch where they latch onto a teat. the teat then swells in the joey's mouth, essentially ensuring that the baby is not dislodged with the mother's movements. The joey remains there in that position while it continues its development.Female marsupials have two vaginas, or what are called paired lateral vaginae. These are for the purpose of transporting the sperm to the womb, but there is a midline pseudovaginal canal for actually giving birth. As well as two vaginas and two uteruses, female marsupials have two fallopian tubes and two cervixes. Most male marsupials, with the exception of the largest species, the Red Kangaroo, Eastern Grey and Western Grey Kangaroos, have a "bifurcated" or two-pronged penis to accommodate the females' two vaginas.
What are the key differences in reproductive strategies of marsupials compared with that of placental mammals?
1. Marsupials give birth to undeveloped young after a shorter gestation period (depending on the size of the animal); placental mammals give birth to more fully developed young.2. Marsupials' placentas are not as advanced as placental mammals' placentas.3. Marsupials' young must attach to the nipple for many weeks to several months before they are developed enough to detach; placental mammals' young do not need to attach permanently to the nipple for any period of time.4. Most marsupials have pouches in which they carry their young; no placental mammals have pouches.5. Most male marsupials (with the exception of the largest species of angaroos) have a "bifurcated" or two-headed penis which is only used for reproduction; male placental mammals have a one-headed penis which is also used for urination.6. Female marsupials have two vaginas, or what are called paired lateral vaginae. These are for the purpose of transporting the sperm to the womb, but there is a midline pseudovaginal canal for actually giving birth. As well as two vaginas and two uteruses, female marsupials have two fallopian tubes and two cervixes.
Is a Koala a marsupial placental or a monotreme mammal?
A koala is a marsupial. Like any marsupial, koalas have a pouch in which to keep their young. Most marsupials, including kangaroos, wallabies, possums, bandicoots and koalas, share this feature, but some marsupials such as the numbat have just a rudimentary flap of skin to protect the joeys.Like other marsupials, koala joeys are characterised by being extremely small and undeveloped at birth. At birth, they take a long, arduous journey from the birth canal, driven purely by instinct, grabbing hold of the mother marsupial's fur to reach the pouch. Upon reaching the pouch, they latch onto a teat which swells in their mouth to prevent them from being accidentally dislodged during the mother's movements. There they stay for months, to complete their development.Female koalas, like other marsupials, have two vaginas, or what are called paired lateral vaginae. These are for the purpose of transporting the sperm to the womb, but there is a midline pseudovaginal canal for actually giving birth. As well as two vaginas and two uteruses, female marsupials have two fallopian tubes and two cervixes. Male koalas are like most male marsupials (except for the largest species, the Red Kangaroo, Eastern Grey and Western Grey Kangaroos), in that they have a bifurcated, or two-pronged penis, to accommodate the females' two vaginas.
Are koalas marsupials?
Yes. A koala is a marsupial. It is a pouched mammal, and the young (joey) is born extremely undeveloped. It makes its way to the mother's pouch (which, incidentally, is backward-facing) where it latches onto a teat, remaining there for many months to continue its development. The joey stays in the mother's pouch for a few months. When it is old enough, it begins to venture out, clinging tightly to the mother's fur.Like other marsupials, female koalas have two vaginas, or what are called paired lateral vaginae. These are for the purpose of transporting the sperm to the womb, but there is a midline pseudovaginal canal for actually giving birth. As well as two vaginas and two uteruses, female koalas have two fallopian tubes and two cervixes. Male koalas have a two-pronged penis to accommodate the females' two vaginas.Therefore, it should be remembered that koalas are not"koala bears".
Did simple plan have any inspirations?
their penises!
Has Rolf Harris receive any awards?
penises
Scientific name for marsupials?
Young marsupials go by the name of joey. A joey is any young marsupial, whether it be a kangaroo, wombat, koala, Tasmanian devil or any of the other 300 or so species of marsupials.
Is the mammoth a masupial?
Marsupials are mammals with pouches for raising their young. Mammoths did not have any such pouch. So mammoths weren't marsupials. Instead, they were placental mammals.
How does a koala resemble a kangaroo?
Koalas do not resemble kangaroos. They are both marsupials, but they do not resemble each other in any other way, apart from shared characteristics of marsupials.
Is there really a disease that causes kids to draw penises?
No, there is no direct link between any mental illness and a child's desire to draw penises. Perhaps the child is simply interested in penises. Who are you to quell his desire to express himself artistically through the drawing of phallic members?
