Pollen and stigmas of Venice Mallow flower

Pollen and stigmas of Venice Mallow flower

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Caption: False colour scanning electron micrograph of pollen grains and feathery stigmas of the Venice Mallow flower, Hibiscus trionum. The stigma is the pollen receiving structure, which together with the ovary, forms the female reproductive organ. In this species it consists of a series of finger- like projections, which trap the pollen grains. At germination, the pollen grows a tube which conveys the male gametes down through the stigma, into the ovary & up to the ovule. The tip of the tube ruptures, releasing the male gamete to fuse with & fertilize the ovule. Magnification: x36 at 6x7cm size.

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Keywords: botany, hibiscus, hibiscus trionum, mallow flower, nature, plant, plants, pollen, pollen and stigm, reproduction, reproductive, sem, stigma, type, venice mallow flower

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