Question

From the evolutionary point of view, retention of the female gametophyte with developing young embryos on the parent sporophyte for some time, is first observed in?
A.Liverworts
B.Mosses
C.Pteridophytes
D.Gymnosperms

Answer 1

Hint:The female gametophyte develops within the ovule and generally consists of three antipodal cells, one the central cell, the two synergid cells, and the one egg cell.
The female gametophyte is also commonly known as the embryo sac of the megagametophyte.

Complete answer:
In the Pteridophytes, a megaspore is retained for some times in the female gametophyte; however, permanent retention is required for the seed formation in the Gymnosperms.
This is the reason the Pteridophytes exhibit precursor to seed habit only.
Therefore, the correct answer is option C.

Additional information:
The pteridophyte is a vascular plant with the xylem and the phloem that disperses spores. Because the pteridophytes produce neither flowers nor seeds, they are sometimes referred to as the cryptogams, which means that their means for reproduction is hidden.
The Pteridophyte retains the megaspore for a significant amount of time within the gametophyte of the female.
They are the vascular plants that reproduce by releasing spores rather than seeds, and they also include the highly diverse true ferns and the other graceful, primarily forest-dwelling plants.
The gymnosperms are flowerless plants that produce cones and seeds.
The term gymnosperm literally means the "naked seed".
The mosses are a phylum of nonvascular plants.
They produce spores for reproduction instead of seeds and don't grow flowers, wood, or true roots.
The liverworts are a group of non-vascular plants similar to the mosses.

Note:The pteridophytes are the phylum of the plants.
The Pteridophytes are found in moist, shady, and damp places.
They are also seen in the crevices of rocks, bogs and the swamps, and the tropical trees.