A) Azolla
B) Rhizobium
C) Anihoceros
D) Rhodospirillum
Correct Answer: A
Solution :
[a] Azollapinnatais an aquatic pteridophyte. It shows symbiotic association with nitrogen fixing blue-green algae. If it is grown in the rice field, it increases the production of rice by 50 %.You need to login to perform this action.
You will be redirected in
3 sec