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Antherozoids enter the archegonium of prothallus due to
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Alternation of generation in fern plant
During asexual reproduction, sporangia produces many haploid spores, which germinates giving rise to the gametophyte, the prothallus. The prothallus bears male sex organ antheridia and female sex organ archegonia, which produce antherozoids and eggs respectively.
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Gynoseum of the cell division
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