Which of the following groups of plants are highly useful in increasing soil fertility
Red algae
Fungi
Bacteria
Bryophytes
Which of the following is free living aerobic and nonphotosynthetic nitrogen fixing bacterium
Which organisms are used to increase thesoil fertility ?
Which of the following cyanobacteria can fix atmospheric nitrogen?
$I.$ Anabaena
$II.$ Oscillatoria
$III.$ Nostoc
Choose the correct option
Why are cyanobacteria considered useful in paddy fields ?
Relation between bacteria and legume having nodulated roots is that of