Germinating pollen grain of the lily

Germinating pollen grain of the lily

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Caption: Light micrograph of a germinating pollen grain of the lily Lilium (Liliaceae). Once this pollen, which contains the male gametes, has landed on the female stigma of the flower, it germinates. A tube (seen here) grows out from the pollen grain, down through the stigma to the ovary. The male nuclei pass down this tube, fertilize the ovules and a seed is formed. Magnification: x250 at 35mm size.

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Keywords: botany, germination, lilium, lily, nature, plant, plants, pollen, reproduction, reproductive, type

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