Which 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 :
1
1, 3 and 4 only
2
1, 3, 5 and 6 only
3
2, 4, 5 and 6 only
4
1, 2, 4, 5 and 6