Strategies For Enhancement In Food Production Question 484
Question: Aquatic fern which is an excellent biofertilizer [CBSE PMT 1999, 2000,01]
Options:
A) Salvinia
B) Azolla
C) Marsilea
D) Pteridium
Show Answer
Answer:
Correct Answer: B
Solution:
Azolla pinnata (aquatic fern) is a symbiotic nitrogen fixing cyanobacteria which is inoculated in rice fields in south-eastern Asia, and found to increase yield upto 50%.
BETA
