Isidoda

Isidoda yiseli lokuzala labesilisa, noma i-gamete, ngezinhlobo ezingathandeki zokuzala ngokocansi (amafomu lapho kunengqamuzana enkulu yokuzala "yowesifazane" kanye nelincane, "lowesilisa". Izilwane zikhiqiza isidoda se-motile esinomsila owaziwa njenge-flagellum, owaziwa ngokuthi yi-spermatozoa, kanti amanye ama-algae abomvu nesikhunta akhiqiza amaseli wesidoda angenayo i-motile, eyaziwa njenge-spermatia. Izitshalo eziqhakazayo ziqukethe isidoda esingenayo i-motile ngaphakathi kwempova, kuyilapho ezinye izitshalo ezingaphansi njenge-ferns namanye ama-gymnosperms enesidoda se-motile.