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Macrophotograph of a white-tailed bumble bee, Bombus lucorum, visiting a flowering Michaelmas daisy, Aster frikartii. Insects such as bees feed on the sugary fluid (nectar) and pollen found in flowers. The bee is attracted to flowers by their bright colours. As it reaches inside the flower to gather the nectar, the bee may become dusted with pollen. The bee may also brush pollen from another flower onto this flower's reproductive organs causing cross-pollination. Michaelmas daisies are perennial plants with mauve flowers. (Magnification: x2.5 at 35mm size). (KEYSTONE/SCIENCE PHOTO LIBRARY/JEREMY BURGESS) === ===