SEM of pollen

SEM of pollen

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Caption: Scanning electron micrograph of pollen from the pea plant, Pisum sativum. The pollen is elongated with three furrows, each contaning a germinating pore at mid region (bulge). The pea is a self pollinating plant, which means that the pollen passes from the anther (male) to the stigma (female) of the same flower. If received, a pollen tube emerges from one of the germinating pores & grows down towards the ovaries. The tube conveys the male gametes (sperm) to the ovum (egg) whereupon they are released to fuse & fertilize the egg. Some pollen, particularly the wind borne grass & tree pollen, may cause hayfever. Magnification: X3000 at 10x8cm, X426 at 35mm size.

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Keywords: botany, germinating, germinating pollen, nature, pea, pisum sativum, plant, plants, pollen, pore, reproduction, reproductive, self pollination, type

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