Flower pollen is a fine powder produced by the male reproductive parts of flowering plants. It contains the male gametes, which are essential for fertilization. Pollen is typically transferred from one flower to another by wind, insects, or animals, facilitating the reproduction process in plants. Pollen grains vary in size, shape, and color depending on the plant species. They play a crucial role in the ecosystem by supporting the growth of seeds and fruits. Additionally, pollen is a key food source for many species, including bees and other pollinators, which help maintain biodiversity in various habitats.