As the pollinator visits another plant of the same species, the pollen sacs break off on the column, and the pollen grains grow down the style and fertilize the flower's ovary.
(the pollinator; visits; another plant of the same species) (the pollen sacs; break off; L:on the column) (the pollen grains; grow down; ) (the pollen grains; fertilize; the flower's ovary)
the pollinator the pollen sacs the pollen grains the pollen grains
visits break off grow down fertilize
another plant of the same species
L:on the column
the flower's ovary