Nitrogen-fixing nodules on the roots of a pea plant (Pisum sativum) allow the plant to utilize free nitrogen in the atmosphere and soil. Symbiotic bacteria in the nodules fix the nitogen,transforming it into a form useable to the plant | |
Licence : | Droits gérés |
Crédit: | Science Photo Library / Kaprielian, John |
Taille de l’image : | 3819 px × 2570 px |
Model Release : | Non requis |
Property Release : | Non requis |
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