Pine cone. Light micrograph of a section through part of a male cone (strobilus) of a pine tree (Pinus sp.). On the undersides of the scale leaves (microsporophylls) are sac-like microsporangia (blue walls) full of developing microspore pollen grains (red dots). When the wall of a microsporangium splits open the grains are carried by the wind to the female strobilus. Magnification: x90 when printed at 10 centimetres wide | |
Lizenzart: | Lizenzpflichtig |
Credit: | Science Photo Library / ANTONIO ROMERO |
Bildgröße: | 5120 px × 3413 px |
Modell-Rechte: | nicht erforderlich |
Eigentums-Rechte: | nicht erforderlich |
Restrictions: | - |