Chicory pollen grain. Coloured scanning electron micrograph (SEM) of a pollen grain from a common chicory (Cichorium intybus) flower. Many varieties are cultivated for salad leaves,chicons (blanched buds),or for roots (var. sativum),which are baked,ground,and used as a coffee substitute and additive. Pollen grains are the male sex cells of a flowering plant. Their characteristic surface is used by botanists to recognise and classify plants. Pollen in plants is used for transferring male genetic material from the anther of a single flower to the stigma of another in cross-pollination. In a case of self-pollination,this process takes place from the anther of a flower to the stigma of the same flower. Magnification: x 1500 when printed at 10 centimetres wide | |
Licence : | Droits gérés |
Crédit: | Science Photo Library / Gschmeissner, Steve |
Taille de l’image : | 4572 px × 4239 px |
Model Release : | Non requis |
Property Release : | Non requis |
Restrictions : | - |