In the anthers of stamen there are
pollen .Within the pollen sacs there
microspore mother cells,or
microsporocytes. cells undergo
meiosis forming . Each
microspore by mitosis a pollen
grain containing generative cell and
one cell. The pollen grain the
male gametophyte.

When occurs and the pollen
makes contact with the
(the apex of the ) the tube cell
elongates cytoplasm forming the
pollen that grows towards the
. The generative cell divides
two sperm nuclei (male
) that migrate through the
tube.