UPSC Prelims 2022Environment & EcologyQuestion 15 of 18Which of the following are nitrogen-fixing plants? 1. Alfalfa 2. Amaranth 3. Chickpea 4. Clover 5. Purslane (Kulfa) 6. Spinach Select the correct answer using the code given below:A1, 3 and 4 onlyB1, 3, 5 and 6 onlyC2, 4, 5 and 6 onlyD1, 2, 4, 5 and 6See explanation