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 | |
Licence : | Droits gérés |
Crédit: | Science Photo Library / Wheeler, Dr. Keith |
Taille de l’image : | 5249 px × 3500 px |
Model Release : | Non requis |
Property Release : | Non requis |
Restrictions : | - |