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In each of these whorls are one of four organs, including petals, sepals, stamens, and pistils. Petals and sepals do not play an active role in the reproductive process. Stamens and pistils, the flower's male and female reproductive organs, do aid in reproduction.
Like sepals, petals can be either free or fused in a flower. Flowers with free petals are called polypetalous flowers; whereas, gamopetalous flowers have fused petals. Androecium: Androecium or the stamen is the male reproductive organ in a flower. A stamen consists of an anther and a filament. An anther produces and contains pollens; whereas, the filament is a hair like structure that attaches the anther to the flower. The pollen contains the male gametes or the sperms.