Question

Write brife note on :
(1) Prototheria ​

Answer 1

The Prototheria is a former subclass of mammals, now no longer in use. The name comes from Greek prōtos means 'first', and thēr, 'beast'. The only surviving animals in this subclass are the Monotremes. There are two other subclasses, the Metatheria and the Eutheria.