Question

which blue green algae has the ability
the fix atmospheric nitrogen​

Answer 1

Anabaena cyUndrica Lemm..

1. Anabaena cyUndrica Lemm. has been obtained in pure unialgal bacteria-free culture.

2. Due precautions having been taken against contamination by other or- ganisms and error due to absorption of fixed nitrogen from the atmosphere, this alga has been shown to possess the capacity of fixing nitrogen.

Answer 2

Anabaena cy Undrica Lemm is the algae which has the ability to fix atmospheric nitrogen