Which of the following is non-symbiotic biofertilizer

Azolla is used as biofertilizer as it has

Which disease is caused in children due to excessive use of nitrate fertilizers

Definitions / Explanation : Biofertiliser

Which of the following cyanobacteria can fix atmospheric nitrogen?

$I.$ Anabaena

$II.$ Oscillatoria

$III.$ Nostoc

Choose the correct option

Identify correct option for micorrhiza

$(1)$ Many members of the genus glomusinvolved micorrhiza

$(2)$ It is responsible for all mineralsabsorption from the soil

$(3)$ Such associations show benefitsagainst draught and salinity in plants

$(4)$ Micorrhiza is a symbiotic relation ofalgae and plants