10.00" x 8.00"
12.00" x 10.00"
Common Ragweed Poster
Common Ragweed by Meckes/ottawa - 10" x 8"
Luster Photo Paper
Rolled in a Tube
Common Ragweed poster by Meckes/ottawa. Our posters are produced on acid-free papers using archival inks to guarantee that they last a lifetime without fading or loss of color. All posters include a 1" white border around the image to allow for future framing and matting, if desired.
Color enhanced scanning electron micrograph (SEM) of pollen grains from the common ragweed (Ambrosia artemisiifolia). The grains have a spiked outer... more
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Color enhanced scanning electron micrograph (SEM) of pollen grains from the common ragweed (Ambrosia artemisiifolia). The grains have a spiked outer wall (exine), which may assist in their dispersal by improving their adherence to pollinating insects. The characteristic surface of pollen grains is used by botanists to recognise and classify plants. Each pollen grain contains a male gamete (reproductive cell) that is intended to fertilise an egg or ovule (female gamete), and initiate the formation of a seed for a new plant. These pollen grains are an allergen that may cause hay fever in susceptible individuals. Magnification x1000 when printed at 10 cm wide.
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