How are monotremes different from other mammals?

Answer 1

Monotremes are mammals.

Monotremes are unique types of mammals which lay eggs, rather than giving birth to live young. The only known monotremes are the platypus and the echidna, both of which are found in Australia, while echidnas are also found in New Guinea.)

Answer 2

Monotremes and marsupials are both mammals, but their method of reproduction is quite different.

A marsupial is a pouched mammal. The pouch is where the young joey undergoes most of its growth and development. The tiny, bean-sized joey crawls into the pouch where it latches onto a teat. The teat swells in its mouth, preventing it from being accidentally dislodged while the mother moves around.

A monotreme is an egg-laying mammal. The young are not born, but hatched. The echidna actually lays its egg straight into a fold of skin, like a pouch, that develops only during breeding season, and this is where the egg is incubated. Soon after hatching, the young echidna is transferred into a burrow. The platypus, the other monotreme, lays its egg/s in a burrow or chamber, and does not have a pouch of any description.

Like placental mammals, both marsupial young (which are called joeys) and monotreme young (which do not have a particular name) feed on mother's milk.

Answer 3

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 feed their young milk. Most reptiles lay eggs, although some do give live birth. Most species of reptiles have teeth.

Answer 4

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).

Answer 5

Monotremes are mammals that lay eggs, marsupials give live birth, but the infant is underdeveloped, and develops further in a pouch.

Answer 6

A monotreme is warm-blooded, a sort of mammal but oviparous. Reptiles are cold-blooded.

Answer 7

No. reptiles are a separate group of vertebrates, while monotremes belong to the vertebrate group known as mammals.

Answer 8

Monotremes are mammals, and birds are birds. Monotremes have mammary glands and feed their young on mothers' milk. They have hair, unlike birds, which have feathers.

Answer 9

Monotremes lay eggs, but are otherwise mammals