Questions in diversity-of-life

Select	Question
	In Pteris, the sori are
	Pteris differs from Funaria in having
	The stele in the rachis of Pteris is
	Young sporophyte of Pteris fern draws nourishment from prothallus through
	The stele of Pteridium root is
	Sorus bearing leaf of Pteridium is called
	Indusium in Pteridium is
	In Dryopteris
	What is correct
	In Dryopteris the opening mechanism of sporangium is effectively operated by