Which of the following symbiotic associations is not useful as a biofertilizer?

The organisms which are used to enrich the nutrient quality of the soil are called

To increase the production of soybean crops,$..........$ is used as a biofertilizer.

Which of the following is a fertilizer?

Consider the following four statements $(A - D)$ related to organic farming and select the correct option stating which ones are true $(T)$ and which ones are false $(F)$. The statements :
$(A)$ Produces food crops rich in lipids,vitamins and iron
$(B)$ Uses biofertilisers which increases soil fertility
$(C)$ There is more use of chemical fertilisers and pesticides
$(D)$ Raising unpolluted crops through the use of bacteria,fungi and cyanobacteria

Which of the following pairs is mismatched?