This document provides information about flower parts and their functions. It defines a flower as the seed-bearing part of a plant consisting of reproductive organs surrounded by petals and sepals. The main parts of a complete flower are identified as: sepals, petals, stamens, and pistil. Each part is then defined, with sepals described as the outer green leaves that protect the inner parts, petals attracting insects for pollination, stamens producing pollen, and the pistil composed of an ovary, style and stigma where fertilization occurs.