Mallow pollen grain. Light micrograph (LM) of a mallow flower (Lavatera sp.) pollen grain (yellow). The grain has a highly sculptured outer wall (exin

---

Mallow pollen grain. Light micrograph (LM) of a mallow flower (Lavatera sp.) pollen grain (yellow). The grain has a highly sculptured outer wall (exine). This, together with a coating of oil, causes the grains to stick each other and to pollinating insects, aiding its dispersal. A grain of pollen contains a male gamete that is intended to fertilise an ovule (female gamete), and initiate the formation of a seed. Magnification: X251 when printed 10 centimetres wide.

---

Size: 5249px × 3500px
Photo credit: © DR KEITH WHEELER/SCIENCE PHOTO LIBRARY / Alamy / Afripics
License: Licensed
Model Released: No

Keywords: 1, biological, biology, botanical, botany, circle, circular, dispersal, entomophilous, exine, flora, lavatera, light, mallow, micrograph, microscope, nature, plant, plants, pollen, reproduction, reproductive, sculptured, single, sp., spikes