10. How are gametes formed
in the pteridophyte lifecycle,
by mitosis or meiosis? What is
the type of meiosis that occurs
in pteridophytes?

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In pteridophytes gametes are by
mitosis from special of the
gametophyte. As all plants, in
pteridophytes, is sporic, i.e.,
cells the sporophyte undergo meiosis
generate spores that then
mitosis develop into the .