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| 1. |
What are nodules ?How are they helpful |
| Answer» Root nodules\xa0are\xa0useful\xa0for plants because\xa0they\xa0harbour nitrogen-fixing bacteria such as Rhizobium, Bradyrhizobium, Mesorhizobium and Sinorhizobium that fixes atmospheric nitrogen which is available to the plants.\xa0Root nodules\xa0are usually formed in leguminous plants.\xa0Root\xa0nodules\xa0are extra lobes of certain plants such as peas and beans in which nitrogen-fixing bacteria are found.\xa0Bacteria in these root\xa0nodules\xa0convert the atmospheric nitrogen into nitrates which the plants can utilise. The plants use this nitrogen to synthesise proteins and other materials. | |