What do marsupials and monotremes have in common?

Similarities Between Monotremes and Marsupials Both monotremes and marsupials are warm-blooded animals. Both monotremes and marsupials have mammary glands. Both monotremes and marsupials have different types of pouches. Both monotremes and marsupials have hair surrounding their body.

How do monotremes differ from other mammals?

Monotremes are different from other mammals because they lay eggs and have no teats. Monotremes are different from other mammals because they lay eggs and have no teats. The milk is provided for their young by being secreted by many pores on the female’s belly.

What kind of mammals are marsupials and monotremes?

The eutherians, or placental mammals, and the marsupials together comprise the clade of therian mammals. Monotremes, or metatherians, form their sister clade. There are three living species of monotremes: the platypus and two species of echidnas, or spiny anteaters.

What are the physical characteristics of a monotreme?

General characteristics Like other mammals, monotremes are endothermic with a high metabolic rate (though not as high as other mammals; see below); have hair on their bodies; produce milk through mammary glands to feed their young; have a single bone in their lower jaw; and have three middle-ear bones.

How many species of monotremes are there in the world?

Monotremes are made up of only five species: the platypus and four species of echidna. They are egg-laying mammals who are strictly found in Australia and New Guinea. The key anatomical characteristic that distinguishes monotremes from other mammals is that they have a single orifice for urination, defecation, and reproduction.

How many middle ear bones does a monotreme have?

Like other mammals, however, monotremes have a single bone in their lower jaw, three middle ear bones, high metabolic rates, hair, and they produce milk to nourish the young. Read about monotremes at the University of Tasmania, who have one of the best sites on the web about living monotremes.