The flower is a plant used for enjoyment, with a reproductive function of a metamorphic short branch, of which there are many species. A typical flower bears a calyx, petals, and stamens and pistils that produce reproductive cells on a short axis of limited growth. The flowers consist of a corolla, calyx, receptacle, and stamens, and come in a variety of colors, some of which are very showy and fragrant. Some scholars believe that the sporophylls of gymnosperms are also “flowers”, while most people believe that angiosperms have real flowers, so angiosperms are also called flowering plants. Since the parts of flowers are not easily affected by the external environment, the morphological structure of flowers has long been used as the main basis for the taxonomic identification and systematic evolution of angiosperms.
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