Ungroomed sites correspond with flower pollen-sacs and stigmas After grooming, bees still have pollen on body parts that match the position of flower pollen-sacs and stigmas, according to a study published September 6, 2017 in the open-access journal PLOS ONE by Petra Wester from Heinrich-Heine-University, Germany, and colleagues. Flowers depend on pollen for pollination, and flower-visiting bees … More Pollination