Coloured SEM of sunflower pollen grains

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Coloured SEM of sunflower pollen grains

Pollen grains. Coloured Scanning Electron Micro- graph of pollen grains of the sunflower, Helianthus annuus. Pollen grain size, shape and surface texture differ from one plant species to another. The outer walls (exine) of these pollen grains are covered with spikes which allow them to catch on the bodies of insects, aiding cross- pollination. The form of the pollen grain wall is also used by botanists to identify plant species. Pores in the pollen wall help in water regulation and germination. Pollen grains contain the plants male gametes which fertilise the female egg (ovule) to produce a seed. Pollen also causes hay fever. Magnification: x1, 125 at 5x7cm size. x3, 800 at 10x8ins

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Media ID 9193989

© POWER AND SYRED/SCIENCE PHOTO LIBRARY

Grain Hay Fever Hayfever Helianthus Annuus Magnified Image Microscopic Photos Plants Pollen Pollen Grains Pollinosis Reproduction Reproductive Subjects Sunflower Type Helianthus

EDITORS COMMENTS
This print showcases a coloured scanning electron micrograph of sunflower pollen grains, revealing the intricate details of their size, shape, and surface texture. Each plant species possesses unique characteristics in its pollen grain structure, which can be identified by botanists. In this case, the outer walls (exine) of these pollen grains are adorned with spikes that serve as nature's ingenious mechanism for catching on to insects' bodies during cross-pollination. The wall formation of these pollen grains also plays a crucial role in water regulation and germination through tiny pores present within it. These microscopic wonders contain male gametes responsible for fertilizing the female egg (ovule), ultimately leading to seed production. While serving an essential reproductive purpose in plants, it is worth noting that pollen can also trigger hay fever symptoms in susceptible individuals. This image serves as a reminder of both the beauty and complexity found within nature's reproductive processes. With a magnification level reaching x1,125 at 5x7cm size or x3,800 at 10x8ins dimensions, this photograph from Science Photo Library immerses viewers into the fascinating world of pollination and offers insight into various subjects such as botany, plant reproduction, and even pollinosis research.

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