The term 'BLOOM PART' is used to refer to the two parts of a flower that are essential for pollination. The two parts are the sepals and the petals. Sepals are the outermost layer of a flower and are typically green in color. They protect the inner parts of the flower and help support the petals. Petals are the colorful, innermost layer of a flower and are responsible for attracting pollinators. Together, sepals and petals make up the bloom part of a flower.