Gemma cups are protective in function

Gemma CupBotany gemma cup Gemma cup are special vegetative ,small cup shaped structures borne along the midrib on the dorsal surface of gametophyte of some bryophytes gemmae cup Interestingly, Mprop mutant gemmae started forming rhizoids and thallus when the gemmae were still inside the gemma cup The dormancy

gemmae cups GEMMA CUP AIR PORE NOTCH GEMMAE AIR CHAMBER GREEN ONE CELLED STALK CELLS B D THALLUS SCALE MUCILAGE HAIR RHIZOID Fig Marchantia spp Gemma cup