Which one of the following microbes forms symbiotic association with plants and helps them in their nutrition? (a) Azotobacter (b) Aspergillus (c) Glomus (d) Trichoderma
Option C Azotobacter, Aspergillus and Trichoderma all are free living microbes that help plants in their nutrition. Glomus is a fungus that symbiotically forms endomycorrhiza that helps in absorption of nutrition specially phosphorus from soil.
