Are reptiles monotremes?
No. reptiles are a separate group of vertebrates, while monotremes belong to the vertebrate group known 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…
Not at all. Differences include the following: Monotremes belong to the vertebrate group known as mammals. Reptiles are a completely separate vertebrate group. Mammals (including monotremes) are warm-blooded, while reptiles are cold-blooded. Mammals have fur, skin or hair, but reptiles have scaly skin. Mammals have a four-chambered heart. Most reptiles have a three-chambered heart (except for crocodiles, which have a four-chambered heart).
Monotremes are mammals that can lay eggs. As with other mammals, monotremes feed their young on mother's milk, which is the defining characteristic of a mammal. They also have hair (or fur) and are warm blooded. The only two monotremes are the platypus and the echidna, which are native to Australia. Neither type of monotreme has teeth. Reptiles have no fur but instead have a covering of scaly skin. They are cold blooded, and can't…
Marsupials, monotremes, and placentals are all types of mammals. To qualify as a mammal, an animal has to be warm blooded, have hair, and produce milk for its young. Alligators do not fit any of those criteria, because they are reptiles, not mammals. So they are not marsupials, monotremes, or placentals.
Marsupials give live birth to undeveloped young, which then crawl to the nipples (protected by a pouch in many species). Monotremes lay eggs and do not have nipples. Adult marsupials have teeth, but adult monotremes are toothless. Monotremes have interclavicle and coracoid bones in their shoulders, putting their legs to the sides of their bodies like reptiles. Marsupials do not. Monotremes have spurs on their ankles (venomous only for male platypuses), but marsupials do not.
There are many animals that are not classed as mammals or reptiles. firstly, you have the entire invertebrates group. for example spiders and insects. secondly, you have the vertebrates that are not mammals or reptiles, for example, birds and fish. but if you are wondering the name that incorporates the platypus and echidna, then they are called Monotremes
Neither. Penguins are not mammals or reptiles - they are birds. The differences between birds and mammals and reptiles are: Birds have feathers while mammals have fur, hair or skin, and reptiles have scaly skin. Birds lay eggs whilst mammals (with the exception of the monotremes) bear live young. Reptiles can reroduce either way, depending on the species. Birds and reptiles do not feed their young on mothers' milk like all mammals do.
Spiny anteaters, more correctly known as echidnas, are mammals, not reptiles. Although they are one of two types of monotremes (egg-laying mammals), they have all the other characteristics of a mammal. They have skin covered in fur and quills, not scaly skin like reptiles have. The primary difference is that they feed their young on mothers' milk. This is the defining characteristic that classifies them as mammals.
Animals that lay eggs are categorized as oviparous animals. Many reptiles, birds, fish and almost all amphibians lay eggs, as well as many arthropods. There are also two mammals which lay eggs, the answer is monotremes. The only known monotremes are the platypus, the short-beaked echidna and the long-beaked echidna.
Various types of animals give birth in different ways. For example, mammals (except for the two monotremes - platypuses and echidnas) and some reptiles and fish give birth to living breathing offspring, and most other reptiles, fish and amphibians, together with birds, lay eggs that have to be hatched later.
An egg-laying animal is called oviparous. Many animals lay eggs. Many reptiles, birds, fish and almost all amphibians lay eggs, as well as many arthropods. If the question means which mammals which lay eggs, the answer is monotremes. The only known monotremes are the platypus, the short-beaked echidna and the long-beaked echidna.
An egg-laying animal is called oviparous. Many animals lay eggs. any reptiles, birds, fish and almost all amphibians lay eggs, as well as many arthropods. If the question means which mammals which lay eggs, the answer is monotremes. The only known monotremes are the platypus, the short-beaked echidna and the long-beaked echidna.