. "\"A tubular cell projection that is part of a pollen tube cell and extends from a pollen grain.\" [GOC:tb, PO:0025195, PO:0025281]" . . "pollen tube" . "Carries the male gametes to into or near the ovule. May be branched in gymnosperms. This term replaces the obsolete term PO:0006345. Part of pollen tube cell (PO:0025195)." . .