Biology, asked by hardipdhiman30201, 10 months ago

The aquatic fern, which is an excellent
biofertiliser is
(a) Azolla (b) Salvinia
(c) Marsilia (d) Pteridium

Answers

Answered by AdarshAbrahamGeorge
0

Answer:

a) Azolla

Explanation:

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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