Answer: the stamen of another flower
Explanation:
There are basically two types of pollination: self pollination and cross pollination. In cross pollination, pollen is transferred from the anther of one flower to the stigma of another flower of the same species. Stamen is the male reproductive part of a flower which produces the pollen. The stamen has two parts: the anther and the stalk. The anther bears the pollen. In self pollination, a flower receives pollen from one of its own stamen.
