Ragweed pollen grains, SEM

Ragweed pollen grains, SEM

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Caption: Ragweed (Ambrosia sp.) pollen grains (yellow) sticking to an anther, scanning electron micrograph (SEM). Pollen grains are reproductive structures produced by the male parts of flowering plants. Ragweed releases 1.6 million pollen grains per hour, which are highly allergic and a major contributor to hayfever.

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Keywords: ambrosia sp., anther, biological, biology, botanical, botany, coloured, complex, components, dispersal, exine, false-coloured, flora, gamete, grains, hayfever, male, many, multiple, nature, outer wall, parts, plant, plants, pollen, pollen grain, rag weed, ragweed, reproduction, reproductive, scanning electron micrograph, scanning electron microscope, segmented, segments, sem, sticking, sticky, structure, structures, stuck

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