- Home
- Standard 12
- Biology
12.Ecosystem
normal
The agent/s which make/s free atmospheric nitrogen available to plants is/are
A
Lightening
B
Free living nitrogen fixing bacteria
C
Symbiotic nitrogen fixing bacteria
D
All of these
Solution
(d)$N_2$ fixation occurs in two ways namely-Electrochemical fixation and Biological fixation. Lightening is the electrochemical fixation and free living nitrogen fixing bacteria and symbiotic nitrogen fixing bacteria are the biological $N_2$ fixing organisms.
Standard 12
Biology
