FLOWERS ARE THE SITES OF SEXUAL REPRODUCTION in flowering plants.Their component parts are arranged in whorls around the receptacle (tip of the flower stalk).The sepals (collectively called the calyx ) are outermost; typically large and brightly coloured ;they are found inside the sepals .In monocotyledonous flowers , sepals and petals are indistinguishable.; individually they are called petals (collectivity called the periastron).The petals surround the male and female reproductive structures.(androecium and gynecologic ),The androeciu...