Pollen grains from marsh marigold

Pollen grains from marsh marigold

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Caption: Marsh marigold pollen grains. Coloured scanning electron micrograph (SEM) of pollen grains from the marsh marigold (Caltha palustris). The size, shape and surface texture of these pollen grains are unique to this plant species. The sculptured outer walls (or exines) of the grains play a role in their dispersal by wind, water or insects. Here, the grooved and spiked wall allows the pollen to attach itself to insects which feed on the flower. Pollen grains contain the male gametes of the plant which fertilize the female egg (or ovule) to form the plant seed. Pollen also causes allergies and hay fever. Magnification unknown.

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Keywords: botany, caltha palustris, cause, coloured sem, exine, grain, hay fever, hayfever, marigold, marsh, marsh marig, marsh marigold, nature, of pollen, plant, plants, pollen, reproduction, reproductive, sem

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