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Monotremes have a reproductive process quite unlike any other mammals. They lay eggs in order to reproduce, yet they suckle the young, thus placing them in the classification of 'mammal'.
Monotremes' eggs develop in the mother's body for a period of about 28 days. After they are laid, they are then incubated for ten days.
Echidnas lay a single egg into a rudimentary pouch they develop during breeding season. Platypuses lay one to three eggs in a chamber at the end of a long burrow they dig in riverbanks.
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What reproductive organs are present in monotremes?
Monotremes, such as the platypus and echidna, possess unique reproductive organs that include cloaca, which serves as a common opening for excretion and reproduction. Female monotremes have specialized mammary glands that produce milk, though they lack nipples; milk is secreted through openings in the skin and pools in grooves for the young to lap up. Males have testes that remain internal and do not descend into a scrotum, which is unlike most other mammals. Additionally, male monotremes have spurs on their hind limbs that can deliver venom.
The reproductive system of a monotreme empties into the?
The reproductive system of a monotreme (such as the platypus or echidna) empties into a cloaca, which is a single opening for excretory, digestive, and reproductive functions. The cloaca is found in both male and female monotremes, serving as the common exit point for waste and reproductive fluids.
What is the reproductive process for a cell?
reproductive cells
What is the process of transferring pollen from the reproductive structure to a female reproductive structure?
The process of pollination.
How is a monotreme similar to chicken or duck?
A monotreme is a mammal that lays eggs. The word itself is from the Greek language meaning single hole referring to the monotremes cloaca, the urinary, defecation, and reproductive systems all exit from a single duct. Monotremes lay eggs
How are monotremes the same?
Monotremes are egg laying mammals. 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.
Is the process of transferring pollen from a male reproductive structure to a female reproductive structure?
The process of pollination.
Why do scientists think the platypus is an important clue in history of evolution?
The Platypus (Ornithorhynchus anatinus) is one of the few mammalian species in the world that lays eggs; a group known as the monotremes. Monotremes are extremely important in the study of mammalian evolution because of the adaptive transition from egg laying to live birth. By studying the genes and reproductive physiology of monotremes in comparison to marsupials and placental mammals biologists can determine how the reproductive strategy of live birth branched from precursory traits.
What are 2 things not found in marsupials that are found in monotremes?
Two things not found in marsupials which are found in monotremes:1. Monotremes lay eggs, although they are mammals.2. Monotremes have a single opening, or cloaca, for passing waste and for the reproductive purposes of both males and females. Marsupials have separate urinary and genital tracts, but the genital tract is separate, but there is still an external remnant of the original cloaca.3. Monotremes have alternative to teeth - the platypus has a grinding plate and the echidna has a long, sticky tongue so does not need teeth.
Why don't koalas hatch from eggs?
Quite simply, the egg-laying mammals are restricted to just the monotremes. Koalas are marsupials, not monotremes. The reproductive system of marsupials is made for giving live birth, not for laying eggs. The only egg-laying mammals are echidnas and platypuses.
What kind of fertilization do sponges use in their reproductive process?
Sponges use internal fertilization in their reproductive process.
What are three ways monotremes are different from reptiles?
Platypuses and echidnas are both 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 montreme lays her eggs.
