Assertion : Heterospory and retention of female gametophyte are responsible for origin of seed habit in Selaginella
Reason : Psilotum is a living fossil
(1) If both assertion and reason are true and reason is the correct explanation of assertion.
(2) If both assertion and reason are true but reason is not the correct explanation of assertion.
(3) If assertion is true but reason is false.
(4) If both assertion and reason are false
