Pea flower pollination. Coloured scanning electron micrograph (SEM) of pollen grains (ovals) on the stigma of a garden pea flower (Pisum sativum). The

---

Pea flower pollination. Coloured scanning electron micrograph (SEM) of pollen grains (ovals) on the stigma of a garden pea flower (Pisum sativum). The pollen grains, which contain male genetic material, have become trapped by the stigma's papillae (hair-like structures, green). The stigma is part of the female reproductive structure (pistil), which is formed from one or more carpels. Each carpel consists of a stigma, a style and an ovary (not seen). If the female sex cells (ovules) in the ovary become fertilised by the pollen grains' male sex cells, the carpel may ripen to produce a fruit containing seeds.

---

Size: 4834px × 3626px
Photo credit: © SUSUMU NISHINAGA/SCIENCE PHOTO LIBRARY / Alamy / Afripics
License: Licensed
Model Released: No

Keywords: background, biological, biology, black, botanical, botany, carpel, coloured, false-coloured, female, flora, flower, gamete, garden, grain, grains, nature, papilla, papillae, pea, pistil, pisum, plant, plants, pollen, pollination, reproduction, reproductive, sativum, sem, stigma, structure