Question

Which two characters out of (a)-(e) given below are common to dog, humans, squirrel, bat, camel and monkey?
(a) scales on the skin
(b) wings
(c) external ears
(d) give birth to young ones
(e) a functional tail

Answer 1

The two common characters to a dog, human, squirrel, bat, camel and monkey are:

(c) External ears

(d) Give birth to young ones, i.e, vivipary