Light micrograph of pollen grains (round) on a flower's stigma. Pollen grains are the male sex cells of a flower. The stigma is a the tip of the pistil, the female reproductive structures of a flower. | |
Licence : | Libre de droits |
Crédit: | Science Photo Library / CHOKSAWATDIKORN |
Model Release : | Non requis |
Property Release : | Non requis |
Restrictions : | - |