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Flower differentiation is a plant process by which the shoot apical meristem changes its anatomy to generate a flower or inflorescence in lieu of other structures. Anatomical changes begin at the edge of the meristem, generating first the outer whorls of the flower - the calyx and the corolla, and later the inner whorls of the flower, the androecium and gynoecium.
What appear to be "petals" of an individual flower, are actually each individual complete ray flowers, and at the center is a dense pack of individual tiny disc flowers. Because the collection has the overall appearance of a single flower, the collection of flowers in the head of this sunflower is called a pseudanthium or a composite.
The upper ring bears between 450 and 5,000 small cream-coloured male flowers; [10] [4] the lower ring consists of the pink carpels of female flowers. [10] Shortly before flowering, the two leaflike bracts at the base of the spathe dry up and die. [4] The female flowers open before the male flowers to prevent self-pollination. [11]
Once it opens, the giant bloom lasts just 24 to 36 hours.
ABC model of flower development guided by three groups of homeotic genes.. The ABC model of flower development is a scientific model of the process by which flowering plants produce a pattern of gene expression in meristems that leads to the appearance of an organ oriented towards sexual reproduction, a flower.
The species Amorphophallus titanum, 'corpse flower' or titan arum, has the world's largest unbranched inflorescence, with a height of up to 2.5 metres (8.2 ft) and a width of 1.5 metres (4.9 ft). [ citation needed ] After an over 1.2 metres (3.9 ft)-tall flower opened at Chicago Botanic Gardens on September 29, 2015, thousands lined up to see ...
A flower that is not part of an inflorescence is called a solitary flower and its stalk is also referred to as a peduncle. Any flower in an inflorescence may be referred to as a floret , especially when the individual flowers are particularly small and borne in a tight cluster, such as in a pseudanthium .
A prequel to 2014’s Flowers in the Attic and its sequel, Petals on the Wind, The Origin begins in 1920 with a younger Olivia Winfield (played by The Girlfriend Experience’s Jemima Rooper ...