Prickly pear pollen grains, SEM

Prickly pear pollen grains, SEM

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Credit: MARTIN OEGGERLI/SCIENCE PHOTO LIBRARY

Caption: Prickly pear (Opuntia sp.) pollen grains (green) sticking to an anther, scanning electron micrograph (SEM). Pollen grains are reproductive structures produced by the male parts of flowering plants. The grain has a textured outer wall (exine), which may assist in its dispersal by improving its adherence to pollinating insects.

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Keywords: anther, biological, biology, botanical, botany, coloured, dispersal, exine, false-coloured, flora, gamete, grains, male, nature, opuntia sp., outer wall, paddle cactus, plant, plants, pollen, pollen grain, prickly pear, reproduction, reproductive, scanning electron micrograph, scanning electron microscope, sculpted, sem, spike, spiked, spikes, sticking, sticky, structure, structures, stuck, succulent, textured

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