The Four Main Whorls of a Flower
A flower is the reproductive structure of a flowering plant. It is typically composed of four main parts arranged in concentric rings or whorls: the calyx (sepals), corolla (petals), androecium (stamens), and gynoecium (pistil or carpel). Each part plays a specific role in the process of pollination and fertilization.
Section 2: Protective and Attractive Parts
The outermost whorl consists of the sepals, which are typically green, leaf-like structures that enclose and protect the developing bud. Inside the sepals are the petals, which are often brightly colored to attract pollinators like insects and birds. Collectively, the sepals are called the calyx, and the petals are called the corolla.
Section 3: The Male Reproductive Part (Stamen)
The stamen is the male reproductive organ of a flower. It consists of two parts: the anther, which produces and contains pollen grains (male gametes), and the filament, a stalk that supports the anther. The complete set of stamens in a flower is called the androecium.
Section 4: The Female Reproductive Part (Pistil/Carpel)
The pistil, or carpel, is the female reproductive organ, typically located in the center of the flower. It is composed of three parts: the stigma at the top, which is sticky to trap pollen; the style, a tube-like structure connecting the stigma to the ovary; and the ovary at the base, which contains one or more ovules (female gametes). After fertilization, the ovary develops into the fruit.