Yes a monotreme does have a backbone because it is a type of mammal and a mammal is a vertebrate.
All birds and monotreme mammals (the Platypus and echidnas) fit that description.
No, they are a marsupial and not a monotreme. There are only 2 members in the monotreme category which are the echidna and the platypus.
A monotreme is a mammal that lays eggs.
A platypus is a monotreme.
The echidna is a monotreme which eats ants.
The platypus is a monotreme mammal.
That is the correct spelling of "monotreme" (a mammal that lays eggs).
Yes, there is. The echidna is also a monotreme.
No.
A Duck-billed Platypus is an Australian example of a monotreme, a mammal that lays eggs.
No horses are viviparous (give birth to live young). Monotreme mammals lay eggs
Monotremes are mammals which lay eggs rather than give birth, therefore an elephant is not a monotreme.