Selaginella is heterosporous. It produces two types of spores. The microspore develops into microgametophyte and the megaspore develops into megagametophyte. With respect to gametophyte, which one statement is correct

(a)  The microgametophyte is devoid of chloro~phyll at maturity

(b)  The megagametophyte possesses chlorophyll at maturity

(c)   The megagametophyte develops within the walls of megaspore

(d)  The microgametophyte develops chlorophyll at maturity

Ans. c