In cross-pollination transfer of [[1]] takes place from one flower to the stigma of another flower of the same plant or different plant.

Cross-pollination occurs when pollen from one flower's anther is transferred to another flower's stigma on a different member of the same species. 

In flowers where the stamen and carpel grow at the same time and are positioned so that the pollen can rest on the stigma of the flower, self-pollination occurs.