plant-fruit-tropical-1 - Half flower of Tecoma stans(a...

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Fruit formation (tropical) 1 Tecoma When a flower has been fertilised, the petals and stamens shrivel and fall off. The ovary or ovaries begin to grow and form a fruit. Inside the fruit are the fertilised ovules which form the seeds. When the fruit is ripe, the seeds are dispersed by a variety of methods. The following drawings illustrate the process of fruit formation in a selection of species. anther stigma sepal ovules ovary filament stamen style petal tube (yellow)
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Unformatted text preview: Half flower of Tecoma stans* (a) Floral parts have dropped (b) Fruit grows (c) Fruit splits open, exposing seeds (d) Seeds escape ovary (now a fruit) style seed dry fruit wall winged seeds ‘Winged’ seed seed coat extended into ‘wing’ aiding dispersal by wind © D.G. Mackean * Tecoma stans is a flowering tree originating in S. America but widely planted throughout the tropics bees enter petal tube and pollinate the flowers...
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