Õieorgan

Õieorgan refers to the reproductive part of a flowering plant, commonly known as a flower. It is a complex structure responsible for producing seeds through sexual reproduction. Typically, an õieorgan consists of several distinct parts, each with a specific function.

The outermost whorl of the õieorgan is usually the calyx, which is made up of sepals. These are often green and leaf-like, serving to protect the developing bud. Inside the calyx is the corolla, composed of petals. Petals are often brightly colored and scented to attract pollinators like insects or birds.

The reproductive organs are located within the petals. The male reproductive part is the stamen, which consists of the anther and the filament. The anther produces pollen, which contains the male gametes. The female reproductive part is the pistil or carpel, which typically comprises the stigma, style, and ovary. The stigma is the receptive tip where pollen lands, the style is a stalk connecting the stigma to the ovary, and the ovary contains ovules, which develop into seeds after fertilization.

Some õieorganid are bisexual, possessing both stamens and pistils, while others are unisexual, having either male or female reproductive parts. The arrangement and fusion of these parts can vary greatly among different plant species, contributing to the vast diversity of flowers observed in nature. The primary role of the õieorgan is to facilitate pollination and fertilization, ultimately leading to the production of fruits and seeds for the continuation of the plant species.