Germinating pollen. Coloured scanning electron micrograph (SEM) of pollen grains on the back of spider that have sprouted pollen tubes (red). Pollen contains the male sex cells of a plant. Pollen tubes are produced when a pollen grain lands on the pistil (female part) of a flower. The tube burrows down into the pistil to reach the ovaries, where it fertilises the ovum (egg cell). Magnification: x200 when printed at 10 centimetres wide.

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Size: 4572px × 3933px
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Photo credit: © STEVE GSCHMEISSNER/SCIENCE PHOTO LIBRARY / Alamy / Afripics
License: Licensed
Model Released: No

Keywords: angiosperm, angiosperms, biological, biology, botanical, botany, cell, colored, coloured, electron, exine, false-colored, false-coloured, flora, gamete, gametes, germinating, germination, grain, grains, male, micrograph, microscope, nature, outer, pollen, pollination., reproduction, reproductive, scanning, sem, sex, structure, tube, wall