Light micrograph of pollen grains (round) on a flower's stigma. Pollen grains are the male sex cells of a flower. The stigma is the tip of the pistil, the female reproductive structures of a flower. | |
Lizenzart: | Lizenzfrei |
Credit: | Science Photo Library / Choksawatdikorn |
Modell-Rechte: | nicht erforderlich |
Eigentums-Rechte: | nicht erforderlich |
Restrictions: | - |