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How do monotremes marsupials and placental mammal differ in their manner of reproduction?
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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.
What can you infer based on the preceding information about how marsupials differ from placental mammals?
Thier gestation periods are diffrent. Marsupials have a short gestation date while mammels are normally long.
How does the European fox differ to Australian animals?
The European fox is introduced. Most Australian mammals are marsupials and the fox is an introduced placental mammals which is a considerable threat to Australia's native wildlife.
How marsupials differ from all other mammals?
Marsupials give birth to very tiny young and nourish them in the pouch until they can survive on their own.
What are the main groups of mammals and how do they differ?
There are three main groups of mammals-monotremes, marsupials, and placental mammals. The groups differ in how their young develop.Egg-laying mammals are called monotremes. There are just three species of monotremes-two species of spiny anteaters and the duck-billed platypus. A female spiny anteater lays one to three leathery-shelled eggs directly into a pouch on her belly. After the young hatch, they stay in the pouch for six to eight weeks. There they drink milk that seeps out of pores on the mother's skin. In contrast, the duck-billed platypus lays her eggs in an underground nest. The tiny young feed by lapping at the milk that oozes from slits onto the fur of their mother's belly.Koalas, kangaroos, and opossums are some of the better-known marsupials.Marsupialsare mammals whose young are born at an early stage of development, and they usually continue to develop in a pouch on their mother's body. Marsupials have a very short gestation period, the length of time between fertilization and birth. For example, opossums have a gestation period of about 13 days. Newborn marsupials are tiny-some opossums are less than 1 centimeter long at birth! When they are born, marsupials are blind, hairless, and pink. They crawl along the wet fur of their mother's belly until they reach her pouch. Once inside, they find one of her nipples and attach to it. They remain in the pouch until they have grown enough to peer out of the pouch opening.Unlike a monotreme or a marsupial, a placental mammal develops inside its mother's body until its body systems can function independently. The name of this group comes from the placenta, an organ in pregnant female mammals that passes materials between the mother and the developing embryo. Food and oxygen pass from the mother to her young. Wastes pass from the young to the mother, who eliminates them. An umbilical cord connects the young to the mother's placenta. Most mammals, including humans, are placental mammals. Gestation periods of placental mammals are generally longer than those of marsupials. Usually, the larger the placental mammal, the longer the gestation period. The gestation period for an elephant, for example, averages about 21 months, but for a mouse, it's only about 20 days.Placental mammals are classified into groups on the basis of characteristics such as how they eat and how their bodies move.
How does Conjugation differ from reproduction?
Conjugation does not differ from reproduction as it one of the ways of sexual production. This is where the male and female gametes combine for purposes of reproduction.
What are the main differences between a monotreme and other mammals?
Monotremes are the only mammals that lay eggs.Both platypuses and echidnas are monotremes. The name monotreme is derived from two Greek words meaning "one-holed", because they have just one external opening, the cloaca, for both waste elimination and for reproduction. The cloaca leads to the urinary, faecal and reproductive tracks, all of which join internally, and it is the orifice by which the female monotreme lays her eggs. This is different from other mammals, which have two openings - one for reproduction, and one for waste.
How does fragmentation in sponges differ from reproduction in reptiles?
fat
How the seaweeds differ from the other living things?
Seaweeds refers to large marine forms of algae, they differ in other living things in terms of reproduction, at first they multiply simply by asexual reproduction then undergoes at large of sexual reproduction.
How do marsupials differ from all other mammals with respect to carrying unborn young?
With regard to carrying unborn young, marsupials have a very short gestation period compared to that of placental mammals of similar size. For example, a quoll has a gestation period of 21 days. It is often compared in size to a cat, which has a gestation period of 63-65 days. A wallaby's gestation period averages 30 days; a similar-sized dog has a gestation period of up to 65 days, depending on the breed. The shorter gestation period of marsupials is because they have a yolk-like placenta by which to nourish the young. By contrast, the placenta of placental mammals, or eutherians, nourishes the developing embryo using the mother's blood supply. This allows for longer gestation time.
How do shark reproduction differ from fish reproduction?
Sharks can't pump water over thier gills only fish do.
How does reproduction in ferns differ from that in mosses?
The reproduction in ferns differs from that in mosses in that it is purely asexual. As for mosses, they reproduce both sexually and asexually.
