Question

30) Which of the following is not true? Fungi are very important micro-organismsin the soil because they:

a) are versatile in degrading organic compounds

b) contribute to soil aggregate stability

c) form a symbiotic relationship with plants whereby atmospheric nitrogen gas (N2) is fixed and made available to the plant

d) are more tolerant of acid soil conditions than many other micro-organisms

e) form a symbiosis with plants which increases plant uptake of nutrients such as phosphorus (P

Answer 1

a) True because fungi are versatile in degrading organic compounds. Fungal species have shown wide versatility in degrading organic pollutants.

b) True because Soil aggregate stability increase is strongly related to fungal community.

c) False because bacteria form a symbiotic relationship with plants whereby atmospheric nitrogen gas (N2) is fixed and made available to the plant. Nitrogen fixation is carried out naturally in the soil by a wide range of nitrogen fixing Bacteria and Archaea, including Azotobacter. Some nitrogen-fixing bacteria have symbiotic relationships with some plant groups, especially legumes.

d) True, fungi are more tolerant of acid soil conditions than many other micro-organisms

e) True, fungi form a symbiosis with plants which increases plant uptake of nutrients such as phosphorus.