Arnica pollen grain, SEM

Arnica pollen grain, SEM

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This image is part of the sequence Pollen app (pollen)

Credit: POWER AND SYRED/SCIENCE PHOTO LIBRARY

Caption: Arnica pollen grain. Coloured scanning electron micrograph (SEM) of a chamisso arnica (Arnica chamissonis) plant's pollen grain. The outer wall (exine) of this pollen grain is highly sculpted to aid the dispersal of the pollen grain. A flowering plant produces many pollen grains which need to be dispersed. This dispersal may happen as the spiky exine sticks to a pollinator such as a bee. Each pollen grain contains a male gamete (reproductive cell) that is intended to fertilise the ovule or egg (female gamete) of an arnica plant, and form a seed for a new plant. Magnification: x2670 when printed 10cm wide.

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Keywords: arnica chamissonis, botany, cell, chamisso, coloured, exine, gamete, grain, male, nature, plant, plants, pollen, reproduction, reproductive, round, scanning electron micrograph, sem, sex, spike, spikes, spiky

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