$A$ : India falls under oriental realm out of other biogeographical realms.
$R$ : World is divided in six biogeographical realms.
All the following are examples of homologous organs, except
Darwin's theory of pangenesis says that passage of factors through generation occurs by production in each cell of the body of
Assertion : Among the primates, chimpanzee is the closest relative of the present day humans.
Reason : The banding pattern in the autosome numbers $3$ and $6$ of man and chimpanzee is remarkably similar.