Which is correct about nitrogen fixation by legumes. They fix nitrogen through
Specialised bacteria in their roots
Specialised bacteria in their leaves
Independent of bacteria that live in their roots
The statement is wrong
Biofertilizers
Which of the following is free living aerobic and nonphotosynthetic nitrogen fixing bacterium
Some blue green algae can be used as biofertilizer as they are
Farmers have reported over $50\%$ higher yields of rice by using which of the following biofertilizer
In paddy fields, _______ serves as an important biofertiliser