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The morphology of the bee is closely linked to pollination: the insect is covered with hairs which, during visits to the flowers, are completely filled with pollen grains thus transporting the male gametes to the pistils and ensuring the reproduction of life and biodiversity. Pollination by pollinators is an indispensable factor for many crops. Once the pollen granule has reached the stigma, it is retained on its surface by the papillae covering it and by any exudate present. On the part of the pollen grain in contact with the stigma then a swelling is formed which, developing, gives rise to the pollen tube; this extends along the entire stylus until it reaches the egg by fertilizing it. Each forager visits thousands of flowers a day by collecting a lot of pollen for the brood.
Foraging bee (photo Romeo Caruceru)
The need for workers to collect pollen depends on the amount of brood present in the hive at the time of flowering.