The male gametophytes of seed plants create pollen tubes.
Pollen tubes convey male gamete cells from the pollen grain, either from the stigma to the ovules at the base of the pistil in flowering plants or straight via ovule tissue in gymnosperms.
The pollen tube's job is to transport male gametes to the ovary through the stigma and style.
It enters the ovule via the micropylar end and travels to the synergid cell close to the egg cell.
The pollen tube is guided into synergies by the Filiform apparatus.
The pollen tube is a tube that transports male gamete cells from the pollen grain (or the stigma of flowering plants) to the ovules situated at the pistil's base for fertilizations.