$A$ : India falls under oriental realm out of other biogeographical realms.
$R$ : World is divided in six biogeographical realms.
Assertion and Reason both are correct and also correct explanation.
Assertion and Reason both are correct but not explanation of assertion.
Assertion is correct, but Reason is incorrect.
Both Assertion and Reason are incorrect.
Assertion : The earliest organisms that appeared on the earth were non-green and presumably anaerobes.
Reason :The first autotrophic organisms were the chemoautotrophs that never released oxygen.
In phage $ (plaque)$ culture
A good example for recapitulation theory is
In $1938$, a coelacanth was found in