Daisy seeds, SEM

Daisy seeds, SEM

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Caption: Daisy seeds. Coloured scanning electron micrograph (SEM) of two seeds of a daisy plant (family Asteraceae, formerly Compositae). The seeds (bottom) are known as cypselas. The cypsela contains the embryo (fertilized ovum), that will germinate into a new plant. Around the edge of each cypsela is a fringe of feathery hairs known as the pappus. The function of the pappus is to aid seed dispersal by providing an increased surface area to the wind.

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Keywords: asteraceae, botany, coloured sem, compositae, composite, cypsela, cypselas, daisy seed, disc floret, florets, flower, flowering, inflorescence, nature, pappus, part, parts, plant, plants, reproduction, reproductive, scanning electron micrograph, seeds, structure, vertical

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