- Nitrogen fixation is the process by which atmospheric nitrogen (N₂) is converted into ammonia (NH₃) or related nitrogenous compounds. In agriculture, this is primarily done by bacteria, notably Rhizobia, which live symbiotically in the root nodules of leguminous plants. - Alfalfa (Medicago sativa) is a legume and fixes nitrogen. - Amaranth (Amaranthus spp.) is not a legume and does not fix nitrogen. - Chickpea (Cicer arietinum) is a legume and fixes nitrogen. - Clover (Trifolium spp.) is a legume and fixes nitrogen. - Purslane (Kulfa) (Portulaca oleracea) is not a legume and does not fix nitrogen. - Spinach (Spinacia oleracea) is not a legume and does not fix nitrogen.
Which of the following are nitrogen-fixing plants ? Alfalfa 1. Amaranth 2. Chickpea 3. Clover 4. Purslane (Kulfa) 5. Spinach 6. Select the correct answer using the code given below :
Asked in UPSC IAS 2022 · Topic: Plant Nutrition (Symbiotic Nitrogen Fixation: Nodule formation and biochemistry)
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