Prothallus represents
Gameotphytic phase is fern
Sporophytic phase in fern
gametophytic phase in gymnosperms
gametophytic phase in angiosperms
Prothallus -
Spores germinate to give rise to small, multicellular, free living, mostly photosynthetic thalloid gametophytes, called prothallus.
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Prothallus is thalloid gametophytes