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Monotremes, like other mammals, are warm-blooded vertebrate animals with a covering of fur. Their young are nourished with milk.
Other characteristics which monotremes share with other mammals are;
- A flexible neck with seven cervical vertebrae
- Breathe using lungs
- Mammals also show enhanced neocortex development
- Sound is produced by the larynx (a modified region of the trachea)
- limbs are oriented vertically
- The mammalian heart has 4 chambers
- Internal temperature is generally high
- Egg development occurs in the uterus (excluding monotremata)
- They have sweat glands
- A single jaw bone
- Diaphragm
- Three bones for a middle ear
- Give birth to young alive
- Feeds milk to its young
- Has hair on its body
Wiki User
∙ 12y ago
Wiki User
∙ 14y agoMonotremes are mammals; specifically, they are egg-laying mammals. The young suckle on mothers' milk, the same as placental mammals and marsupials do.
Like other mammals, monotremes are warm-blooded vertebrates that breathe air using lungs (not gills). They have a body covering of fur, skin or hair.
Wiki User
∙ 13y agobecause they lay eggs like birds do.
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Can you give some oviparous animals?
Birds, monotremes, most reptiles and amphibians are oviparous.
What is an egg shell of an animal?
Monotremes are egg-laying mammals, and their eggs are not hard-shelled, but leathery. The monotremes include the platypus and echidna.Reptiles also lay rubbery/leathery eggs.
What has the most in common birds fish amphibians reptiles and mammals?
reptiles and amphibians have the most in common
Do penguins lay eggs with hard shells?
Yes. Penguins are birds, and birds reproduce by laying eggs with hard shells. This is different from the eggs of reptiles and monotremes, which have leathery shells.
What do reptiles and birds have in common?
they both lay eggs.
Why are some mammals that lay eggs classified as mammals?
Monotremes lay eggs, as do reptiles. Monotremes' limbs go outward (rather than downward) from their main body, which is also true for reptiles. Monotremes lack a corpus callosum (which placental mammals have), as do reptiles. Monotremes and reptiles both have cloacas, while placental mammals have separate openings for urination and defecation. This evidence all shows monotremes to be a link between reptiles and mammals, but we now think that monotremes just evolved from an earlier branching from the mammalian tree of lineage than the marsupials and placental mammals evolved from. Monotremes are not a link between reptiles and mammals.
What do birds snails mammals and reptiles have in common?
They are all animals. That is about it.
What characteristics are common to both birds and reptiles?
Lay eggs
What is origin of flying reptiles?
flying reptiles are in fact birds. as animals are now being classified into monophyletic groups, we must include birds as reptiles as well because they came from a common ancester
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.
What animal group has internal fertilisation but external development?
Reptiles and birds are among the major groups of vertebrates that have internal fertilization and external development. Also included are monotremes and marsupials.
Did dinosaurs have a cloaca or an anus?
A cloaca is a common chamber and outlet into which the intestinal, urinary, and genital tracts open. It is present in amphibians, reptiles (therefore dinosaurs), birds, elasmobranch fishes (such as sharks), and monotremes. Plancental mamals and most bony fishes have an anus.
