50.1 MB (4.4 MB compressed)
4604 x 3803 pixels
38.9 x 32.3 cm ⏐ 15.3 x 12.7 in (300dpi)
AMI IMAGES / SCIENCE PHOTO LIBRARY AMI IMAGES / SCIENCE PHOTO LIBRARY
Pine pollen. Coloured scanning electron micrograph (SEM) of a pollen grain from a pine (Pinus sp.) tree. Pollen grains are the male sex cells of a flowering plant. Their characteristic surface is used by botanists to recognise and classify plants.
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