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Monotremata (Echidna, Platypus) Echidnas are terrestrial mammals with a long, tubular snout, powerful claws, and spines that cover the tail and dorsal surface of the body. The spines are firmly attached to the skin and cannot be pulled out as in the case of porcupine spines.
- What makes a Monotremata?
- What makes an animal a mammal?
- What physical characteristic gives monotremes their name?
- What type of animals are monotremes?
- What characters differentiate birds mammals?
- What do you call an egg-laying mammal?
- What is a mammal exactly?
- Why are mammals called mammals?
- What trait do monotremes share with reptiles?
- What two Australian animals are monotremes?
- What are the 3 subclasses of mammals?
- What are the 3 species of monotremes?
- Are monotremes cold blooded?
What makes a Monotremata?
The name Monotremata means “one-holed,” in reference to the fact that both sexes have only one opening at the rear of the body, which is used for both reproduction and excretion.
What makes an animal a mammal?
Mammals have hair or fur; are warm-blooded; most are born alive; the young are fed milk produced by the mother's mammary glands; and they have a more complex brain than other animals.
What physical characteristic gives monotremes their name?
The word monotreme literally means “one hole.” The name refers to the single body opening, or cloaca, that monotremes use for urination, defecation, and reproduction. The presence of a cloaca is a trait that monotremes share with both lizards and birds.
What type of animals are monotremes?
The monotremes are a group of highly specialised egg-laying predatory mammals, containing the platypus and echidnas. There are only five living species of monotreme, contained within two families: Family Ornithorhynchidae: the platypus, a single species in a single genus, Ornithorhynchus anatinus.
What characters differentiate birds mammals?
Question : The character which differentiates mammals from birds is. Metanephric kidney.
What do you call an egg-laying mammal?
Only two kinds of egg-laying mammals are left on the planet today—the duck-billed platypus and the echidna, or spiny anteater. These odd “monotremes” once dominated Australia, until their pouch-bearing cousins, the marsupials, invaded the land down under 71 million to 54 million years ago and swept them away.
What is a mammal exactly?
mammal, (class Mammalia), any member of the group of vertebrate animals in which the young are nourished with milk from special mammary glands of the mother. ... The mammalian lower jaw is hinged directly to the skull, instead of through a separate bone (the quadrate) as in all other vertebrates.
Why are mammals called mammals?
Mammals were named by Carl Linnaeus, the father of taxonomy. Linnaeus named mammals after the Latin word mamma, meaning breast. ... Among a few other features, mammals produce milk from mammary glands to feed their young.
What trait do monotremes share with reptiles?
The word “monotreme” literally means “one opening,” which is a characteristic feature: similar to birds and reptiles, they have the same opening for fecal matter, urine, and reproduction, called a cloaca. Also like birds and reptiles, monotremes lay eggs, although their eggs are uniquely rubbery and rather small.
What two Australian animals are monotremes?
Echidnas and platypuses are the only surviving monotremes (egg-laying mammals) in the world.
What are the 3 subclasses of mammals?
Mammals are divided into three groups - monotremes, marsupials and placentals, all of which have fur, produce milk and are warm-blooded.
What are the 3 species of monotremes?
Monotremes are a unique order of mammals that includes only three extant species: the duck-billed platypus (Ornithorynchus anitinus), the short-billed echidna (Tachyglossus aculeatus), and the western long-billed echidna (Zaglossus bruijni).
Are monotremes cold blooded?
Although warm-blooded, there are some mammals (monotremes, the egg-laying mammals like the duck-billed platypus) whose metabolisms are close to being cold-blooded.
