Gujarati
Hindi
8.Microbes in Human Welfare
medium

The main sources of biofertilisers are

A

Bacteria

B

Cyanobacteria

C

Fungi

D

All of these

Solution

Nitrogen Fixing Bacteria and Cyanobacteria act as Biofertolizers as they add specific nutrient Nitrogen to the soil.

Fungi act as biofertilizer as they help in absoprtion of water and minerals specially Phosphorous by associating with roots of higher plants and forming Mycorrhiza.

Standard 12
Biology

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