When the pollen grains are shed from anther, they are disseminated by arios agencies. Some of them may, by one means or another, finally reached the stigma of a pistil, either of same or another...
Before pollination, the pollen grains are stored in the anthers (male part) of the plant. During pollination, an insect (such as a bee) flies to the flower for nectar and some pollen from the anthers...