50.0 MB (3.3 MB compressed)
4832 x 3614 pixels
40.9 x 30.5 cm ⏐ 16.1 x 12.0 in (300dpi)
MARTIN OEGGERLI / SCIENCE PHOTO LIBRARY MARTIN OEGGERLI / SCIENCE PHOTO LIBRARY
Pollen grain on a chip. Scanning electron micrograph (SEM) of a pollen grain from an Aponogeton sp. plant on a digital camera chip. Pollen grains are reproductive structures produced by the male parts of flowering plants. The grain has a spiked outer wall (exine), which may assist in its dispersal by improving its adherence to pollinating insects. Aponogeton sp. plants are aquatic and are found in tropical to warm temperate regions of Africa, Asia and Australasia.
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