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Formation of gametes in pteridophyte life cycle

Explain the formation of gametes in the pteridophyte life cycle, through the mitosis or meiosis? State the type of meiosis which takes place in pteridophytes?

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In pteridophytes gametes are formed through the process of the mitosis from the special cells of gametophyte. As in all plants, in pteridophytes, meiosis is sporic, that says, cells of sporophyte undertake meiosis and produces the spores which then through the mitosis turns into the gametophyte.

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