Skip to content
doubtly
Sign up

1 answer

Log in to upvote 0 Log in to downvote

Best answer

Answer: 3. Pteridophytes

Key idea: Retention of the female gametophyte with the young embryo on the sporophyte appears first in pteridophytes (the seed-habit precursor).

In bryophytes the zygote develops into an embryo within the archegonium, but the gametophyte is the dominant plant and the sporophyte depends on it. In heterosporous pteridophytes such as Selaginella and Salvinia, the megaspore germinates into the female gametophyte inside the megasporangium on the parent sporophyte, and the zygote develops into a young embryo there. This is the precursor of the seed habit, later perfected in gymnosperms.

Doubtly AI · 30 Oct 2026 AI-generated · not yet verified Report
Was this answer helpful?
Sign in to comment

Your answer

Log in or create a free account to answer this question.