Fluorescent light micrograph of the germination of pollen grains on the stigma of Lycopersicon esculentum,a tomato plant. The pollen grain (yellow oval) produces a pollen tube (long yellow filament),which,as it grows,carries the male gametes (sperm) down the style toward the ovaries at the base of the flower. The tip of the tube bursts open & releases the gametes to fertilise the ovum (egg). Successful fertilisation insures the next generation of seeds | |
Lizenzart: | Lizenzpflichtig |
Credit: | Science Photo Library / Zeiss |
Bildgröße: | 5019 px × 3555 px |
Modell-Rechte: | nicht erforderlich |
Eigentums-Rechte: | nicht erforderlich |
Restrictions: | - |