SEM of stigmas of the common daisy

SEM of stigmas of the common daisy

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Credit: DAVID SCHARF/SCIENCE PHOTO LIBRARY

Caption: False-colour scanning electron micrograph of stigmas of the common daisy, Bellis perennis. The picture shows developing stigmatic surfaces at the tips of a group of carpels, the flower's female reproductive organs. Most of the carpels have 5 stigmas, but one is abnormal & has 6 (centre right). The stigmas are joined to ovaries at the base of the carpels by a stalk, or style. Pollen contacting the stigma may germinate & produce a tube that grows down the style into the ovaries, which contain the female gametes. The male gamete in the pollen grain passes down the tube into the ovary, where fertilisation occurs. Magnification: x10 at 35mm size. Green tint ("leech"). Ref: MICROCOSMOS, fig. 4.28, p. 81

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Keywords: bellis sp., botany, daisy, flower, flowering part, nature, parts, plant, plants, stigma

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