Final answer:
A flower's four main parts are the calyx (sepals), corolla (petals), androecium (stamens), and gynoecium (carpels), which include various components essential for a flower's reproduction.
Step-by-step explanation:
Parts of a Flower
The four main parts, or whorls, of a flower are the calyx, corolla, androecium (stamens), and gynoecium (carpels). The calyx is made up of sepals, the typically green parts that protect the flower before it opens. The corolla consists of petals, which are often bright and colorful to attract pollinators. The androecium includes the stamens, which are composed of a filament and an anther where pollen grains are produced. The gynoecium contains the carpels, which feature the ovary, style, and stigma; this whorl is responsible for the female reproductive processes in a flower.
A flower typically consists of four main parts, or whorls, which are the calyx, corolla, androecium, and gynoecium. The calyx is the outermost whorl and consists of sepals that protect the unopened bud. The corolla is the second whorl and consists of petals that are usually brightly colored. The androecium is the third whorl and contains the male reproductive structures, including stamens with anthers.