Nodule Formation

Q. Nodule formation of legume roots is reduced due to the deficiency of

1. sulphur
2. boron
3. chlorine
4. both a and b

Q.

What are the steps involved in formation of a root nodule?

Q. List of
A) free living aerobic N2 fixing bacteria
B) free living anaerobic N2 fixing bacteria
C) symbiotic aerobic N2 fixing bacteria
D) symbiotic anaerobic N2 fixing bacteria