Shoots and nitrogen-fixing nodules. Two shoots (white) sprouting from a root system that has numerous nitrogen-fixing nodules (rounded protuberances). Nodules of this type are produced by species of Rhizobium bacteria in the soil entering the roots of leguminous plants. The bacterium benefits from a safe environment within the plant,and the plant benefits from the bacterial ability to fix atmospheric nitrogen within the nodule. This is an example of symbiosis. These roots are part of a Thermopsis rhombifolia flowering plant,found in the USA from the Rocky Mountains to New Mexico | |
Lizenzart: | Lizenzpflichtig |
Credit: | Science Photo Library / Burgess, Dr. Jeremy |
Bildgröße: | 3626 px × 4835 px |
Modell-Rechte: | nicht erforderlich |
Eigentums-Rechte: | nicht erforderlich |
Restrictions: | - |