Which one of the following helps in the absorption of phosphorus from soil by plants?

Select the appropriate option regarding mycorrhiza.

Which genus of fungi is used to form mycorrhiza?

How do biofertilisers enrich the fertility of the soil?

The biofertilizer present in the roots of legumes is

$A$ farmer has applied chemical fertilisers in his crop field for many successive seasons. In the next season,the crop growth was poor as the soil lost its fertility. Suggest the suitable micro-organisms that replenish the fertility of the soil in his field.