Pollen grains, artwork

Pollen grains, artwork

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Caption: Pollen grains. Artwork of pollen grains from different flowers. The outer wall (exine) of each pollen grain is highly sculpted to aid their dispersal. 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, or the grains may be disperse on the wind. Each pollen grain contains a male gamete (reproductive cell) that is intended to fertilise the ovule or egg (female gamete) of another plant of that species, forming the seed for a new plant. High pollen levels can trigger allergic reactions such as hay fever.

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Keywords: allergen, allergens, angiosperms, artwork, biological, biology, botanical, botany, exine, flora, flowering plants, grains, hay fever trigger, high pollen levels, illustration, male, many, multiple, nature, plant reproduction, pollen, pollen grain, pollination, reproductive structure, white background, wind dispersal

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