Germinating plane tree pollen. Coloured scanning electron micrograph (SEM) of a plane tree (Platanus sp.) pollen grain that has sprouted a pollen tube

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Germinating plane tree pollen. Coloured scanning electron micrograph (SEM) of a plane tree (Platanus sp.) pollen grain that has sprouted a pollen tube (brown). 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).

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Size: 4000px × 3221px
Photo credit: © PHILIPPE PSAILA/SCIENCE PHOTO LIBRARY / Alamy / Afripics
License: Licensed
Model Released: No

Keywords: biochemical, biological, biology, botanical, botany, cell, coloured, exine, false-coloured, flora, gamete, gametes, germinating, germination, grain, male, nature, outer, plane, plant, plants, platanus, pollen, pollination, reproduction, reproductive, sculpted, sem, sex, single, sp., sprouting, tree, tube, wall