Stigma of sweet alyssum flower

Stigma of sweet alyssum flower

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Credit: DAVID SCHARF/SCIENCE PHOTO LIBRARY.

Caption: False colour scanning electron micrograph (SEM) of the stigmatic surface of the sweet alyssum flower (family: Cruciferae). The stigma is the pollen- receiving structure of the flower's female reproductive organs. It is attached to the ovaries (right) by means of a short style and is covered by papillae (finger-like projections); a number of pollen grains may seen adhering to the papillae. Compatible pollen trapped on the papillae germinates by growing a pollen tube. The pollen tube, carrying the male gamete, grows through the stigma, down the style and towards the ovary, where fertilisation occurs. Magnification: X 43 at 35mm size. Original is Bw print b765/039.

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Keywords: alyssum, botany, flower, flowering part, nature, on stigma, ovary, parts, plant, plants, pollen, scanning electron micrograph, sem, stigma, sweet alyssum flower

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