Presentation on theme: "Bot 222 Reem Alotaibi. Flower Parts The receptacle is the point at which the floral parts attach to the tip of the specialized stem bearing the flower."— Presentation transcript:
The receptacle is the point at which the floral parts attach to the tip of the specialized stem bearing the flower. The receptacle is often somewhat enlarged. Sepals make up the outer ring of floral parts; collectively, they are called the calyx. They are often green in color, though some flowers (fuchsia and iris, for example) have brightly colored, petal-like sepals.
Flower Parts Petals form the next circle of flower parts, just inward from the sepals. If a blossom is showy, chances are it's the petals you notice. Petals may be separate, as in camellia and rose, or united in a tubular, cupped, or bell-like shape, as in rhododendron and petunia. Collectively, the petals are called the corolla; corolla and calyx together are known as the perianth. Stamens, positioned inward from the petals, contain the male reproductive elements. A typical stamen consists of a slender stalk, the filament, topped by an anther, which is usually yellow in color. The anther contains grains of pollen, the male element needed to fertilize the flower.
Flower Parts Pistils, found in the flower's center, bear the female reproductive parts. Each pistil typically consists of an ovary with a stalklike tube (the style) rising from it. The style is topped by a stigma, which receives the pollen. The ovary contains one or more ovules; following pollination and fertilization, these develop into the plant's seeds