Question

all mammals give birth to their young ones
a) name two mammals who lay egg.
b) between which two phyla do they serve as connection
c) name a mammal who gave birth to poorly developed young ones

Answer 1

a)  The short-beaked echidna and duck-billed platypus are the two animals that lay eggs. Short beaked echidna looks like porcupine, but it is completely different animal.

b) They serve as a connection between reptiles and mammals.

c) The mammal that gives birth to poorly developed young ones is Kangaroo.