MCQ
Aquatic fern which is an excellent biofertilizer
- ASalvinia
- ✓Azolla
- CMarsilea
- DPteridium
✓
Answer
Correct option: B.
Azolla
b
(b)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 $50\%.$
(b)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 $50\%.$
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