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Anna7910
The stigma is part of the pistil, which is part of the female reproductive organ.  Pollination is the process of the transfer of pollen from the anther of on flower (which is part of the stamen, the male reproductive organ in plants), to the stigma of another flower.
Canadianfox
The top of the stigma is sticky and is where the pollen attaches to it. (Just to sum up the main points )