From evolutionary point of view, retention of the
female gametophyte with developing young embryo
on the parent sporophyte for some time, is first
observed in:
Pteridophytes
Gymnosperms
(3) Liverworts
(4) Mosses
Answers
Answer:
Pteridophytes retain the female gametophyte along with the developing young embryo on the parent sporophyte for some time.
Explanation:
In case of Pteridophytes, the megaspore is retained for some time in the female gametophyte, though permanent retention is necessary for the formation of the seed in Gymnosperms.
Hence, Pteridophytes are only precursors to seed habit.
Answer:
A pteridophyte is a vascular plant that scatters spores. Since pteridophytes produce neither blossoms nor seeds, they are additionally alluded to as "cryptogams", implying that their methods for generation is covered up.
The pteridophytes incorporate the plants, horsetails, and the lycophytes. Since they produce neither blooms nor seeds, they are alluded to as cryptogams. The gathering incorporates greeneries, horsetails, clubmosses and whisk plants.