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Mammals that give birth to fully developed live young are called eutherians or placental mammals. These mammals have a complex placenta that nourishes the developing fetus during gestation, allowing them to be born at a more advanced stage of development compared to other mammals, such as marsupials. Examples of eutherians include humans, elephants, and whales.
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What is the main feature which differentiaties marsupials from other mammals?
marsupials all give birth to under developed young, and usually have some sort of pouch to keep them and feed them until they are fully developed
What is the only organ fully developed at birth in the human body?
The only organ fully developed at birth in the human body is the brain.
Why do kangaroos give birth to their young even before they are fully developed?
This feature is not restricted to kangaros. It is characteristic of all marsupials. The pouch serves a similar purpose to the uterus in placental mammals.
What gives birth to partially -developed live young?
Oviparous animals, such as certain sharks, snakes, and insects, can give birth to partially developed live young. These animals lay eggs internally, where the embryos develop until they are ready to hatch and be born. This is different from placental mammals, like humans, who give birth to fully developed live young.
What is a baby string ray called?
A baby stingray is called a pup. It is born fully developed and able to swim immediately after birth.
Which is the first sense to be fully developed?
The sense of touch is the first sense to be fully developed in humans. It begins to develop in the womb and is already functional at birth.
Is the human ear fully developed at birth?
No, the human ear is not fully developed at birth. The structures of the inner ear continue to mature and develop after birth, with some aspects of hearing and auditory processing taking several years to fully develop.
How do placental monotremes and marsuprials differ?
Placental mammals give birth to live young, which, during development, are nourished by a placenta. Marsupials give birth to very tiny, undeveloped offspring, which they then shelter in a pouch until the baby has developed more fully. Monotremes are mammals that lay eggs, and the only existing types are the platypus and the echidna.
Is a placental mammal a mammal that lays eggs outside their bodies?
No. Mammals which lay eggs outside their bodies are monotremes.A placental mammal gives birth to live young which are fully developed, unlike marsupials, which give birth to live young which are very undeveloped.
What senses are developed at birth?
At birth, babies have developed their sense of touch, taste, and smell. They are also able to hear sounds outside of the womb. Their sense of sight is not fully developed yet and continues to develop over the following months.
Are babies cones fully developed at birth?
Yes they are. When they are born , their body's cones develop.
Where do whales lay eggs?
Whales do not lay eggs ! They are mammals giving birth to fully-formed live young !
