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From evolutionary point of view retention of the female gametophyte with developing

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

Options

(a) Mosses
(b) Pteridophytes
(c) Gymnosperms
(d) Liverworts

Correct Answer:

Pteridophytes

Explanation:

In Pteridophyte, megaspore is retained for some times in female gametophyte, however the permanent retention is required for seed formation in Gymnosperms.

That’s why Pteridophytes exhibit precursor to seed habit only.

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